{"id":86984,"date":"2025-05-16T17:24:17","date_gmt":"2025-05-16T10:24:17","guid":{"rendered":"https:\/\/itviec1.uptech.vn\/?p=86984"},"modified":"2025-05-16T17:24:17","modified_gmt":"2025-05-16T10:24:17","slug":"cau-hoi-phong-van-iot","status":"publish","type":"post","link":"https:\/\/itviec.com\/blog\/cau-hoi-phong-van-iot\/","title":{"rendered":"Top 30+ c\u00e2u h\u1ecfi ph\u1ecfng v\u1ea5n IoT Developer l\u00fd thuy\u1ebft v\u00e0 th\u1ef1c h\u00e0nh"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_84 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">N\u1ed9i dung b\u00e0i vi\u1ebft<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/itviec.com\/blog\/cau-hoi-phong-van-iot\/#Cau_hoi_phong_van_IoT_co_ban\" >C\u00e2u h\u1ecfi ph\u1ecfng v\u1ea5n IoT c\u01a1 b\u1ea3n<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/itviec.com\/blog\/cau-hoi-phong-van-iot\/#Cau_hoi_phong_van_ve_phan_cung_va_thiet_bi_IoT\" >C\u00e2u h\u1ecfi ph\u1ecfng v\u1ea5n v\u1ec1 ph\u1ea7n c\u1ee9ng v\u00e0 thi\u1ebft b\u1ecb IoT<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/itviec.com\/blog\/cau-hoi-phong-van-iot\/#Cau_hoi_phong_van_giao_thuc_truyen_thong_IoT\" >C\u00e2u h\u1ecfi ph\u1ecfng v\u1ea5n giao th\u1ee9c truy\u1ec1n th\u00f4ng IoT<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/itviec.com\/blog\/cau-hoi-phong-van-iot\/#Cau_hoi_phong_van_ve_bao_mat_IoT\" >C\u00e2u h\u1ecfi ph\u1ecfng v\u1ea5n v\u1ec1 b\u1ea3o m\u1eadt IoT<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/itviec.com\/blog\/cau-hoi-phong-van-iot\/#Cau_hoi_phong_van_IoT_ve_dien_toan_dam_may_va_phan_tich_du_lieu\" >C\u00e2u h\u1ecfi ph\u1ecfng v\u1ea5n IoT v\u1ec1 \u0111i\u1ec7n to\u00e1n \u0111\u00e1m m\u00e2y v\u00e0 ph\u00e2n t\u00edch d\u1eef li\u1ec7u<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/itviec.com\/blog\/cau-hoi-phong-van-iot\/#Cau_hoi_phong_van_ve_thiet_ke_he_thong_IoT\" >C\u00e2u h\u1ecfi ph\u1ecfng v\u1ea5n v\u1ec1 thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng IoT<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/itviec.com\/blog\/cau-hoi-phong-van-iot\/#Cac_cau_hoi_thuc_hanh_lap_trinh_IoT\" >C\u00e1c c\u00e2u h\u1ecfi th\u1ef1c h\u00e0nh l\u1eadp tr\u00ecnh IoT<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/itviec.com\/blog\/cau-hoi-phong-van-iot\/#Tong_ket\" >T\u1ed5ng k\u1ebft<\/a><\/li><\/ul><\/nav><\/div>\n<p><em><strong>\u0110\u1ec3 v\u01b0\u1ee3t qua v\u00f2ng ph\u1ecfng v\u1ea5n cho v\u1ecb tr\u00ed IoT Developer, b\u1ea1n kh\u00f4ng ch\u1ec9 c\u1ea7n n\u1eafm v\u1eefng ki\u1ebfn th\u1ee9c l\u00fd thuy\u1ebft m\u00e0 c\u00f2n ph\u1ea3i th\u1ec3 hi\u1ec7n \u0111\u01b0\u1ee3c t\u01b0 duy h\u1ec7 th\u1ed1ng v\u00e0 kh\u1ea3 n\u0103ng tri\u1ec3n khai th\u1ef1c t\u1ebf. N\u1ebfu b\u1ea1n \u0111ang chu\u1ea9n b\u1ecb cho m\u1ed9t bu\u1ed5i ph\u1ecfng v\u1ea5n v\u1ec1 IoT, \u0111\u1eebng b\u1ecf qua b\u00e0i vi\u1ebft n\u00e0y. ITviec \u0111\u00e3 t\u1ed5ng h\u1ee3p c\u00e1c c\u00e2u h\u1ecfi ph\u1ecfng v\u1ea5n IoT Developer t\u1eeb l\u00fd thuy\u1ebft \u0111\u1ebfn th\u1ef1c h\u00e0nh th\u01b0\u1eddng g\u1eb7p nh\u1ea5t. Hy v\u1ecdng nh\u1eefng c\u00e2u h\u1ecfi n\u00e0y s\u1ebd gi\u00fap b\u1ea1n \u0111\u1ea1t k\u1ebft qu\u1ea3 t\u1ed1t trong bu\u1ed5i ph\u1ecfng v\u1ea5n s\u1eafp t\u1edbi.\u00a0<\/strong><\/em><\/p>\n<p><span style=\"font-weight: 400;\">\u0110\u1ecdc b\u00e0i vi\u1ebft \u0111\u1ec3 \u0111\u01b0\u1ee3c h\u01b0\u1edbng d\u1eabn tr\u1ea3 l\u1eddi:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">C\u00e2u h\u1ecfi ph\u1ecfng v\u1ea5n IoT c\u01a1 b\u1ea3n<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">C\u00e2u h\u1ecfi ph\u1ecfng v\u1ea5n ph\u1ea7n c\u1ee9ng v\u00e0 thi\u1ebft b\u1ecb IoT<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">C\u00e2u h\u1ecfi ph\u1ecfng v\u1ea5n giao th\u1ee9c truy\u1ec1n th\u00f4ng IoT<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">C\u00e2u h\u1ecfi ph\u1ecfng v\u1ea5n v\u1ec1 b\u1ea3o m\u1eadt IoT<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">C\u00e2u h\u1ecfi ph\u1ecfng v\u1ea5n IoT v\u1ec1 \u0111i\u1ec7n to\u00e1n \u0111\u00e1m m\u00e2y v\u00e0 ph\u00e2n t\u00edch d\u1eef li\u1ec7u<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">C\u00e2u h\u1ecfi ph\u1ecfng v\u1ea5n v\u1ec1 thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng IoT<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">C\u00e1c c\u00e2u h\u1ecfi th\u1ef1c h\u00e0nh l\u1eadp tr\u00ecnh IoT<\/span><\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"Cau_hoi_phong_van_IoT_co_ban\"><\/span><b>C\u00e2u h\u1ecfi ph\u1ecfng v\u1ea5n IoT c\u01a1 b\u1ea3n<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><b>IoT l\u00e0 g\u00ec? H\u00e3y gi\u1ea3i th\u00edch \u0111\u1ecbnh ngh\u0129a theo c\u00e1ch d\u1ec5 hi\u1ec3u nh\u1ea5t<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">IoT (Internet of Things) hay \u201cInternet v\u1ea1n v\u1eadt\u201d l\u00e0 m\u1ed9t h\u1ec7 th\u1ed1ng k\u1ebft n\u1ed1i gi\u1eefa c\u00e1c thi\u1ebft b\u1ecb v\u1eadt l\u00fd v\u1edbi nhau th\u00f4ng qua Internet. M\u1ed7i thi\u1ebft b\u1ecb \u0111\u01b0\u1ee3c g\u00e1n m\u1ed9t m\u00e3 \u0111\u1ecbnh danh ri\u00eang, cho ph\u00e9p ch\u00fang t\u1ef1 \u0111\u1ed9ng thu th\u1eadp v\u00e0 trao \u0111\u1ed5i d\u1eef li\u1ec7u, t\u01b0\u01a1ng t\u00e1c v\u1edbi nhau ho\u1eb7c v\u1edbi m\u00f4i tr\u01b0\u1eddng xung quanh m\u00e0 kh\u00f4ng c\u1ea7n t\u00e1c \u0111\u1ed9ng tr\u1ef1c ti\u1ebfp t\u1eeb con ng\u01b0\u1eddi hay m\u00e1y t\u00ednh.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">IoT m\u1edf r\u1ed9ng kh\u1ea3 n\u0103ng k\u1ebft n\u1ed1i Internet v\u01b0\u1ee3t ra ngo\u00e0i c\u00e1c thi\u1ebft b\u1ecb truy\u1ec1n th\u1ed1ng nh\u01b0 m\u00e1y t\u00ednh, laptop hay \u0111i\u1ec7n tho\u1ea1i, \u0111\u1ebfn nhi\u1ec1u v\u1eadt d\u1ee5ng kh\u00e1c trong \u0111\u1eddi s\u1ed1ng v\u00e0 c\u00f4ng vi\u1ec7c nh\u01b0 \u0111\u1ed3ng h\u1ed3 th\u00f4ng minh, m\u00e1y l\u1ea1nh, m\u00e1y m\u00f3c c\u00f4ng nghi\u1ec7p,&#8230;<\/span><b><\/b><\/p>\n<blockquote><p><em>\u0110\u1ecdc th\u00eam: <a href=\"https:\/\/itviec.com\/blog\/dinh-nghia-iot-la-gi\/\" target=\"_blank\" rel=\"noopener\"><strong>IoT l\u00e0 g\u00ec? Nh\u1eefng \u1ee9ng d\u1ee5ng c\u1ee7a IoT trong th\u1eddi \u0111\u1ea1i 4.0<\/strong><\/a><\/em><\/p><\/blockquote>\n<h3><b>C\u00e1c th\u00e0nh ph\u1ea7n ch\u00ednh c\u1ee7a m\u1ed9t h\u1ec7 th\u1ed1ng IoT bao g\u1ed3m nh\u1eefng g\u00ec?<\/b><\/h3>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-86990\" src=\"https:\/\/itviec.com\/blog\/wp-content\/uploads\/2025\/05\/cau-hoi-phong-van-iot-1-vippro.png\" alt=\" c\u00e2u h\u1ecfi ph\u1ecfng v\u1ea5n IoT - ITviec blog\" width=\"2223\" height=\"1259\" srcset=\"https:\/\/itviec.com\/blog\/wp-content\/uploads\/2025\/05\/cau-hoi-phong-van-iot-1-vippro.png 2223w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2025\/05\/cau-hoi-phong-van-iot-1-vippro-300x170.png 300w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2025\/05\/cau-hoi-phong-van-iot-1-vippro-2048x1160.png 640w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2025\/05\/cau-hoi-phong-van-iot-1-vippro-200x113.png 200w\" sizes=\"auto, (max-width: 2223px) 100vw, 2223px\" \/><\/p>\n<p><i><span style=\"font-weight: 400;\">(Ngu\u1ed3n: <\/span><\/i><a href=\"https:\/\/www.geeksforgeeks.org\/components-of-iot-and-relation-with-cloud-computing\/\" target=\"_blank\" rel=\"noopener\"><i><span style=\"font-weight: 400;\">Geeksforgeeks<\/span><\/i><\/a><i><span style=\"font-weight: 400;\">)<\/span><\/i><\/p>\n<p><span style=\"font-weight: 400;\">M\u1ed9t h\u1ec7 th\u1ed1ng IoT th\u01b0\u1eddng bao g\u1ed3m:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Thi\u1ebft b\u1ecb (Things or Devices):<\/b><span style=\"font-weight: 400;\"> G\u1ed3m c\u1ea3m bi\u1ebfn thu th\u1eadp d\u1eef li\u1ec7u (nhi\u1ec7t \u0111\u1ed9, \u0111\u1ed9 \u1ea9m&#8230;) v\u00e0 b\u1ed9 truy\u1ec1n \u0111\u1ed9ng th\u1ef1c hi\u1ec7n h\u00e0nh \u0111\u1ed9ng (nh\u01b0 b\u1eadt qu\u1ea1t).<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>C\u1ed5ng k\u1ebft n\u1ed1i (Gateway): <\/b><span style=\"font-weight: 400;\">Nh\u1eadn v\u00e0 x\u1eed l\u00fd s\u01a1 b\u1ed9 d\u1eef li\u1ec7u, \u0111\u1ed3ng th\u1eddi b\u1ea3o v\u1ec7 m\u1ea1ng IoT.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>\u0110i\u1ec7n to\u00e1n \u0111\u00e1m m\u00e2y (Cloud): <\/b><span style=\"font-weight: 400;\">L\u01b0u tr\u1eef v\u00e0 x\u1eed l\u00fd d\u1eef li\u1ec7u t\u1eeb thi\u1ebft b\u1ecb th\u00f4ng qua h\u1ec7 th\u1ed1ng m\u00e1y ch\u1ee7 tr\u1ef1c tuy\u1ebfn.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Ph\u00e2n t\u00edch d\u1eef li\u1ec7u (Analytics): <\/b><span style=\"font-weight: 400;\">\u00c1p d\u1ee5ng thu\u1eadt to\u00e1n, Machine Learning \u0111\u1ec3 r\u00fat ra th\u00f4ng tin c\u00f3 gi\u00e1 tr\u1ecb.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Giao di\u1ec7n ng\u01b0\u1eddi d\u00f9ng (User Interface): <\/b><span style=\"font-weight: 400;\">N\u1ec1n t\u1ea3ng \u0111\u1ec3 theo d\u00f5i, \u0111i\u1ec1u khi\u1ec3n h\u1ec7 th\u1ed1ng theo th\u1eddi gian th\u1ef1c.<\/span><\/li>\n<\/ul>\n<blockquote><p><em>\u0110\u1ecdc th\u00eam: <a href=\"https:\/\/itviec.com\/blog\/iot-gateway-la-gi\/\" target=\"_blank\" rel=\"noopener\"><strong>IoT gateway l\u00e0 g\u00ec: Top 10 lo\u1ea1i IoT gateway ph\u1ed5 bi\u1ebfn<\/strong><\/a><\/em><\/p><\/blockquote>\n<h3><b>C\u00f3 nh\u1eefng m\u00f4 h\u00ecnh truy\u1ec1n th\u00f4ng n\u00e0o trong IoT?<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">Trong IoT, c\u00e1c thi\u1ebft b\u1ecb c\u1ea7n c\u00f3 ph\u01b0\u01a1ng th\u1ee9c truy\u1ec1n th\u00f4ng hi\u1ec7u qu\u1ea3 \u0111\u1ec3 k\u1ebft n\u1ed1i v\u00e0 trao \u0111\u1ed5i d\u1eef li\u1ec7u. C\u00f3 4 m\u00f4 h\u00ecnh truy\u1ec1n th\u00f4ng ph\u1ed5 bi\u1ebfn, m\u1ed7i m\u00f4 h\u00ecnh ph\u00f9 h\u1ee3p v\u1edbi t\u1eebng lo\u1ea1i \u1ee9ng d\u1ee5ng v\u00e0 ki\u1ebfn tr\u00fac h\u1ec7 th\u1ed1ng kh\u00e1c nhau, bao g\u1ed3m:<\/span><\/p>\n<table>\n<tbody>\n<tr>\n<td><b>M\u00f4 h\u00ecnh truy\u1ec1n th\u00f4ng<\/b><\/td>\n<td><b>\u0110\u1eb7c \u0111i\u1ec3m ch\u00ednh<\/b><\/td>\n<td><b>\u01afu \u0111i\u1ec3m<\/b><\/td>\n<td><b>Nh\u01b0\u1ee3c \u0111i\u1ec3m<\/b><\/td>\n<\/tr>\n<tr>\n<td><b>Y\u00eau c\u1ea7u &#8211;\u00a0 Ph\u1ea3n h\u1ed3i<\/b> <b>(Request &#8211; Response)<\/b><\/td>\n<td><span style=\"font-weight: 400;\">Thi\u1ebft b\u1ecb g\u1eedi y\u00eau c\u1ea7u, server ph\u1ea3n h\u1ed3i. M\u1ed7i y\u00eau c\u1ea7u \u0111\u01b0\u1ee3c x\u1eed l\u00fd \u0111\u1ed9c l\u1eadp, kh\u00f4ng l\u01b0u tr\u1ea1ng th\u00e1i.<\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-86989\" src=\"https:\/\/itviec.com\/blog\/wp-content\/uploads\/2025\/05\/cau-hoi-phong-van-iot-2-vippro.png\" alt=\"c\u00e2u h\u1ecfi ph\u1ecfng v\u1ea5n IoT - ITviec blog\" width=\"1421\" height=\"643\" srcset=\"https:\/\/itviec.com\/blog\/wp-content\/uploads\/2025\/05\/cau-hoi-phong-van-iot-2-vippro.png 1421w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2025\/05\/cau-hoi-phong-van-iot-2-vippro-300x136.png 300w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2025\/05\/cau-hoi-phong-van-iot-2-vippro-768x348.png 640w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2025\/05\/cau-hoi-phong-van-iot-2-vippro-200x90.png 200w\" sizes=\"auto, (max-width: 1421px) 100vw, 1421px\" \/><\/td>\n<td><span style=\"font-weight: 400;\">\u0110\u01a1n gi\u1ea3n, d\u1ec5 tri\u1ec3n khai, ph\u00f9 h\u1ee3p cho truy v\u1ea5n nhanh.<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Kh\u00f4ng \u0111\u00e1p \u1ee9ng \u0111\u01b0\u1ee3c h\u1ec7 th\u1ed1ng c\u00f3 s\u1ed1 l\u01b0\u1ee3ng l\u1edbn thi\u1ebft b\u1ecb g\u1eedi y\u00eau c\u1ea7u \u0111\u1ed3ng th\u1eddi.<\/span><\/td>\n<\/tr>\n<tr>\n<td><b>Nh\u00e0 xu\u1ea5t b\u1ea3n &#8211;\u00a0 Ng\u01b0\u1eddi \u0111\u0103ng k\u00fd<\/b><span style=\"font-weight: 400;\"> (Publisher &#8211; Subscriber)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Publisher g\u1eedi d\u1eef li\u1ec7u \u0111\u1ebfn broker. Sau \u0111\u00f3, broker ph\u00e2n ph\u1ed1i d\u1eef li\u1ec7u cho c\u00e1c subscriber.<\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-86988\" src=\"https:\/\/itviec.com\/blog\/wp-content\/uploads\/2025\/05\/cau-hoi-phong-van-iot-3-vippro.png\" alt=\"c\u00e2u h\u1ecfi ph\u1ecfng v\u1ea5n IoT - ITviec blog\" width=\"1139\" height=\"520\" srcset=\"https:\/\/itviec.com\/blog\/wp-content\/uploads\/2025\/05\/cau-hoi-phong-van-iot-3-vippro.png 1139w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2025\/05\/cau-hoi-phong-van-iot-3-vippro-300x137.png 300w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2025\/05\/cau-hoi-phong-van-iot-3-vippro-768x351.png 640w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2025\/05\/cau-hoi-phong-van-iot-3-vippro-200x91.png 200w\" sizes=\"auto, (max-width: 1139px) 100vw, 1139px\" \/><\/td>\n<td><span style=\"font-weight: 400;\">H\u1ed7 tr\u1ee3 m\u00f4 h\u00ecnh b\u1ea5t \u0111\u1ed3ng b\u1ed9, ph\u00f9 h\u1ee3p h\u1ec7 th\u1ed1ng ph\u00e2n t\u00e1n.<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Ph\u1ee5 thu\u1ed9c v\u00e0o broker trung gian.<\/span><\/td>\n<\/tr>\n<tr>\n<td><b>\u0110\u1ea9y &#8211; K\u00e9o<\/b><span style=\"font-weight: 400;\"> (Push &#8211; Pull)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Producer \u0111\u1ea9y d\u1eef li\u1ec7u v\u00e0o queue. Sau \u0111\u00f3, consumer k\u00e9o d\u1eef li\u1ec7u t\u1eeb queue.<\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-86986\" src=\"https:\/\/itviec.com\/blog\/wp-content\/uploads\/2025\/05\/cau-hoi-phong-van-iot-4-vippro.png\" alt=\"c\u00e2u h\u1ecfi ph\u1ecfng v\u1ea5n IoT - ITviec blog\" width=\"1019\" height=\"536\" srcset=\"https:\/\/itviec.com\/blog\/wp-content\/uploads\/2025\/05\/cau-hoi-phong-van-iot-4-vippro.png 1019w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2025\/05\/cau-hoi-phong-van-iot-4-vippro-300x158.png 300w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2025\/05\/cau-hoi-phong-van-iot-4-vippro-768x404.png 640w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2025\/05\/cau-hoi-phong-van-iot-4-vippro-200x105.png 200w\" sizes=\"auto, (max-width: 1019px) 100vw, 1019px\" \/><\/td>\n<td><span style=\"font-weight: 400;\">&#8211; Gi\u1ea3m t\u1ea3i tr\u1ef1c ti\u1ebfp gi\u1eefa thi\u1ebft b\u1ecb g\u1eedi v\u00e0 nh\u1eadn.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">&#8211; C\u00f3 th\u1ec3 c\u00e2n b\u1eb1ng t\u1ed1c \u0111\u1ed9 \u0111\u1ea9y\/k\u00e9o d\u1eef li\u1ec7u.<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Qu\u1ea3n l\u00fd queue ph\u1ee9c t\u1ea1p n\u1ebfu l\u01b0u l\u01b0\u1ee3ng l\u1edbn.<\/span><\/td>\n<\/tr>\n<tr>\n<td><b>C\u1eb7p k\u1ebft n\u1ed1i \u0111\u1ed9c quy\u1ec1n<\/b><span style=\"font-weight: 400;\"> (Exclusive &#8211; Pair)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">&#8211; K\u1ebft n\u1ed1i hai chi\u1ec1u duy tr\u00ec li\u00ean t\u1ee5c.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">&#8211; Server bi\u1ebft t\u1ea5t c\u1ea3 k\u1ebft n\u1ed1i m\u1edf.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">&#8211; D\u1eef li\u1ec7u trao \u0111\u1ed5i b\u1ea5t k\u1ef3 l\u00fac n\u00e0o.<\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-86985\" src=\"https:\/\/itviec.com\/blog\/wp-content\/uploads\/2025\/05\/cau-hoi-phong-van-iot-5-vippro.png\" alt=\" c\u00e2u h\u1ecfi ph\u1ecfng v\u1ea5n IoT - ITviec blog\" width=\"1024\" height=\"554\" srcset=\"https:\/\/itviec.com\/blog\/wp-content\/uploads\/2025\/05\/cau-hoi-phong-van-iot-5-vippro.png 1024w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2025\/05\/cau-hoi-phong-van-iot-5-vippro-300x162.png 300w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2025\/05\/cau-hoi-phong-van-iot-5-vippro-768x416.png 640w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2025\/05\/cau-hoi-phong-van-iot-5-vippro-200x108.png 200w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/td>\n<td><span style=\"font-weight: 400;\">&#8211; T\u1ed1i \u01b0u cho giao ti\u1ebfp th\u1eddi gian th\u1ef1c.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">&#8211; \u0110\u1ed9 tr\u1ec5 th\u1ea5p.<\/span><\/td>\n<td><span style=\"font-weight: 400;\">T\u1ed1n t\u00e0i nguy\u00ean m\u1ea1ng v\u00e0 h\u1ec7 th\u1ed1ng do duy tr\u00ec k\u1ebft n\u1ed1i l\u00e2u d\u00e0i.<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3><b>IoT kh\u00e1c g\u00ec so v\u1edbi Internet truy\u1ec1n th\u1ed1ng?<\/b><\/h3>\n<table>\n<tbody>\n<tr>\n<td><b>Ti\u00eau ch\u00ed<\/b><\/td>\n<td><b>Internet truy\u1ec1n th\u1ed1ng<\/b><\/td>\n<td><b>Internet of Things (IoT)<\/b><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">M\u1ee5c \u0111\u00edch<\/span><\/td>\n<td><span style=\"font-weight: 400;\">K\u1ebft n\u1ed1i con ng\u01b0\u1eddi v\u1edbi th\u00f4ng tin v\u00e0 d\u1ecbch v\u1ee5.<\/span><\/td>\n<td><span style=\"font-weight: 400;\">K\u1ebft n\u1ed1i c\u00e1c thi\u1ebft b\u1ecb \u0111\u1ec3 thu th\u1eadp d\u1eef li\u1ec7u v\u00e0 t\u1ef1 \u0111\u1ed9ng h\u00f3a h\u00e0nh \u0111\u1ed9ng m\u00e0 kh\u00f4ng c\u1ea7n con ng\u01b0\u1eddi can thi\u1ec7p.<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">C\u00e1ch th\u1ee9c giao ti\u1ebfp<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Ch\u1ee7 y\u1ebfu s\u1eed d\u1ee5ng m\u00f4 h\u00ecnh client-server qua giao th\u1ee9c HTTP.<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Giao ti\u1ebfp linh ho\u1ea1t theo nhi\u1ec1u m\u00f4 h\u00ecnh (client-server, publish-subscribe, peer-to-peer) v\u1edbi giao th\u1ee9c nh\u1eb9 nh\u01b0 MQTT, CoAP.<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Thi\u1ebft b\u1ecb k\u1ebft n\u1ed1i<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Ch\u1ee7 y\u1ebfu l\u00e0 thi\u1ebft b\u1ecb c\u00f3 kh\u1ea3 n\u0103ng x\u1eed l\u00fd v\u00e0 t\u01b0\u01a1ng t\u00e1c nh\u01b0 m\u00e1y t\u00ednh, smartphone, m\u00e1y ch\u1ee7,&#8230;<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u0110a d\u1ea1ng nh\u01b0 c\u1ea3m bi\u1ebfn, thi\u00eat b\u1ecb gia d\u1ee5ng (\u0111\u00e8n, t\u1ee7 l\u1ea1nh,&#8230;) ho\u1ea1t \u0111\u1ed9ng kh\u00f4ng c\u1ea7n t\u01b0\u01a1ng t\u00e1c.<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">T\u1ed1c \u0111\u1ed9 v\u00e0 \u0111\u1ed9 tr\u1ec5<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u01afu ti\u00ean t\u1ed1c \u0111\u1ed9 cao, \u0111\u1ed9 tr\u1ec5 th\u1ea5p \u0111\u1ec3 \u0111\u00e1p \u1ee9ng nhu c\u1ea7u c\u1ee7a ng\u01b0\u1eddi d\u00f9ng cu\u1ed1i.<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Ph\u1ee5 thu\u1ed9c \u1ee9ng d\u1ee5ng, c\u00f3 th\u1ec3 truy\u1ec1n d\u1eef li\u1ec7u theo th\u1eddi gian th\u1ef1c ho\u1eb7c \u0111\u1ecbnh k\u1ef3.<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Quy m\u00f4 v\u00e0 qu\u1ea3n l\u00fd<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Qu\u1ea3n l\u00fd h\u00e0ng tri\u1ec7u thi\u1ebft b\u1ecb, t\u1eadp trung v\u00e0o b\u1ea3o m\u1eadt, hi\u1ec7u su\u1ea5t m\u1ea1ng v\u00e0 ng\u01b0\u1eddi d\u00f9ng cu\u1ed1i.<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Qu\u1ea3n l\u00fd h\u00e0ng t\u1ef7 thi\u1ebft b\u1ecb nh\u1ecf, y\u00eau c\u1ea7u gi\u1ea3i ph\u00e1p qu\u1ea3n l\u00fd ph\u00e2n t\u00e1n, ti\u1ebft ki\u1ec7m n\u0103ng l\u01b0\u1ee3ng v\u00e0 b\u1ea3o m\u1eadt theo t\u1eebng thi\u1ebft b\u1ecb.<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3><b>H\u00e3y gi\u1ea3i th\u00edch thu\u1eadt ng\u1eef th\u00e0nh ph\u1ed1 th\u00f4ng minh trong IoT?<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">Th\u00e0nh ph\u1ed1 th\u00f4ng minh (Smart City) l\u00e0 m\u00f4 h\u00ecnh \u0111\u00f4 th\u1ecb \u1ee9ng d\u1ee5ng c\u00f4ng ngh\u1ec7 IoT \u0111\u1ec3 k\u1ebft n\u1ed1i v\u00e0 qu\u1ea3n l\u00fd hi\u1ec7u qu\u1ea3 c\u00e1c h\u1ec7 th\u1ed1ng h\u1ea1 t\u1ea7ng, ti\u1ec7n \u00edch v\u00e0 d\u1ecbch v\u1ee5 c\u00f4ng c\u1ed9ng. Trong th\u00e0nh ph\u1ed1 th\u00f4ng minh, c\u00e1c thi\u1ebft b\u1ecb nh\u01b0 c\u1ea3m bi\u1ebfn, \u0111\u00e8n chi\u1ebfu s\u00e1ng, \u0111\u1ed3ng h\u1ed3 \u0111o l\u01b0\u1eddng,&#8230; li\u00ean t\u1ee5c thu th\u1eadp v\u00e0 ph\u00e2n t\u00edch d\u1eef li\u1ec7u. Ch\u00ednh quy\u1ec1n s\u1ebd s\u1eed d\u1ee5ng d\u1eef li\u1ec7u n\u00e0y \u0111\u1ec3 t\u1ed1i \u01b0u h\u00f3a ho\u1ea1t \u0111\u1ed9ng giao th\u00f4ng, n\u0103ng l\u01b0\u1ee3ng, c\u1ea5p n\u01b0\u1edbc, an ninh, qu\u1ea3n l\u00fd ch\u1ea5t th\u1ea3i v\u00e0 nhi\u1ec1u l\u0129nh v\u1ef1c kh\u00e1c.<\/span><\/p>\n<figure id=\"attachment_86991\" aria-describedby=\"caption-attachment-86991\" style=\"width: 1600px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-86991 size-full\" src=\"https:\/\/itviec.com\/blog\/wp-content\/uploads\/2025\/05\/cau-hoi-phong-van-iot-6-vippro.jpg\" alt=\"c\u00e2u h\u1ecfi ph\u1ecfng v\u1ea5n IoT - ITviec blog\" width=\"1600\" height=\"1067\" srcset=\"https:\/\/itviec.com\/blog\/wp-content\/uploads\/2025\/05\/cau-hoi-phong-van-iot-6-vippro.jpg 1600w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2025\/05\/cau-hoi-phong-van-iot-6-vippro-300x200.jpg 300w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2025\/05\/cau-hoi-phong-van-iot-6-vippro-1536x1024.jpg 640w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2025\/05\/cau-hoi-phong-van-iot-6-vippro-200x133.jpg 200w\" sizes=\"auto, (max-width: 1600px) 100vw, 1600px\" \/><figcaption id=\"caption-attachment-86991\" class=\"wp-caption-text\">C\u00e1c \u1ee9ng d\u1ee5ng IoT trong c\u00e1c quy m\u00f4 th\u00e0nh ph\u1ed1 th\u00f4ng minh (l\u1edbn &#8211; trung b\u00ecnh &#8211; nh\u1ecf)<\/figcaption><\/figure>\n<p><span style=\"font-weight: 400;\">Nh\u1edd IoT, th\u00e0nh ph\u1ed1 c\u00f3 th\u1ec3 x\u00e2y d\u1ef1ng c\u00e1c h\u1ec7 th\u1ed1ng l\u01b0\u1edbi \u0111i\u1ec7n th\u00f4ng minh, \u0111i\u1ec1u ph\u1ed1i giao th\u00f4ng linh ho\u1ea1t, qu\u1ea3n l\u00fd r\u00e1c th\u1ea3i t\u1ef1 \u0111\u1ed9ng, ti\u1ebft ki\u1ec7m n\u01b0\u1edbc, ph\u00e1t tri\u1ec3n nh\u00e0 \u1edf th\u00f4ng minh v\u00e0 n\u00e2ng cao m\u1ee9c \u0111\u1ed9 an to\u00e0n cho c\u1ed9ng \u0111\u1ed3ng. IoT c\u0169ng mang l\u1ea1i m\u1ed9t l\u1edbp tr\u00ed tu\u1ec7 nh\u00e2n t\u1ea1o v\u00e0 \u0111\u1ed5i m\u1edbi cho quy ho\u1ea1ch \u0111\u00f4 th\u1ecb, gi\u00fap c\u00e1c th\u00e0nh ph\u1ed1 tr\u1edf n\u00ean tr\u1ef1c quan, linh ho\u1ea1t v\u00e0 \u0111\u00e1ng s\u1ed1ng h\u01a1n.<\/span><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Cau_hoi_phong_van_ve_phan_cung_va_thiet_bi_IoT\"><\/span><b>C\u00e2u h\u1ecfi ph\u1ecfng v\u1ea5n v\u1ec1 ph\u1ea7n c\u1ee9ng v\u00e0 thi\u1ebft b\u1ecb IoT<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><b>Gi\u1ea3i th\u00edch kh\u00e1i ni\u1ec7m \u0111i\u1ec7n to\u00e1n bi\u00ean (Edge Computing) trong IoT?<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">\u0110i\u1ec7n to\u00e1n bi\u00ean (Edge Computing) trong IoT l\u00e0 qu\u00e1 tr\u00ecnh x\u1eed l\u00fd d\u1eef li\u1ec7u ngay t\u1ea1i n\u01a1i d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c t\u1ea1o ra (g\u1ea7n v\u1edbi c\u00e1c thi\u1ebft b\u1ecb v\u00e0 c\u1ea3m bi\u1ebfn) thay v\u00ec g\u1eedi to\u00e0n b\u1ed9 d\u1eef li\u1ec7u v\u1ec1 m\u00e1y ch\u1ee7 trung t\u00e2m ho\u1eb7c \u0111\u00e1m m\u00e2y \u0111\u1ec3 x\u1eed l\u00fd.\u00a0\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Vi\u1ec7c x\u1eed l\u00fd t\u1ea1i bi\u00ean gi\u00fap gi\u1ea3m \u0111\u1ed9 tr\u1ec5 (latency), h\u1ea1n ch\u1ebf t\u1eafc ngh\u1ebdn m\u1ea1ng, m\u00e3 h\u00f3a, b\u1ea3o m\u1eadt d\u1eef li\u1ec7u v\u00e0 \u0111\u1ea3m b\u1ea3o h\u1ec7 th\u1ed1ng v\u1eadn h\u00e0nh nhanh ch\u00f3ng, hi\u1ec7u qu\u1ea3, \u0111\u1eb7c bi\u1ec7t khi thi\u1ebft b\u1ecb IoT t\u1ea1o ra kh\u1ed1i l\u01b0\u1ee3ng d\u1eef li\u1ec7u r\u1ea5t l\u1edbn v\u00e0 y\u00eau c\u1ea7u ph\u1ea3n h\u1ed3i t\u1ee9c th\u1eddi.<\/span><\/p>\n<h3><b>C\u1ea3m bi\u1ebfn (sensor) v\u00e0 b\u1ed9 truy\u1ec1n \u0111\u1ed9ng (actuator) kh\u00e1c nhau nh\u01b0 th\u1ebf n\u00e0o?<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">C\u1ea3m bi\u1ebfn (sensor) v\u00e0 b\u1ed9 truy\u1ec1n \u0111\u1ed9ng (actuator) l\u00e0 hai th\u00e0nh ph\u1ea7n quan tr\u1ecdng trong c\u00e1c h\u1ec7 th\u1ed1ng c\u00f4ng ngh\u1ec7 hi\u1ec7n \u0111\u1ea1i, ho\u1ea1t \u0111\u1ed9ng ph\u1ed1i h\u1ee3p \u0111\u1ec3 t\u1ef1 \u0111\u1ed9ng h\u00f3a qu\u00e1 tr\u00ecnh \u0111i\u1ec1u khi\u1ec3n. Tuy nhi\u00ean, ch\u1ee9c n\u0103ng c\u1ee7a ch\u00fang r\u1ea5t kh\u00e1c bi\u1ec7t:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>C\u1ea3m bi\u1ebfn (sensor)<\/b><span style=\"font-weight: 400;\"> c\u00f3 nhi\u1ec7m v\u1ee5 thu th\u1eadp th\u00f4ng tin t\u1eeb m\u00f4i tr\u01b0\u1eddng xung quanh, ch\u1eb3ng h\u1ea1n nh\u01b0 nhi\u1ec7t \u0111\u1ed9, \u00e1nh s\u00e1ng, \u0111\u1ed9 \u1ea9m, \u00e1p su\u1ea5t&#8230; v\u00e0 chuy\u1ec3n \u0111\u1ed5i ch\u00fang th\u00e0nh t\u00edn hi\u1ec7u \u0111i\u1ec7n t\u1eed \u0111\u1ec3 h\u1ec7 th\u1ed1ng x\u1eed l\u00fd.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>B\u1ed9 truy\u1ec1n \u0111\u1ed9ng (actuator)<\/b><span style=\"font-weight: 400;\"> nh\u1eadn t\u00edn hi\u1ec7u \u0111i\u1ec1u khi\u1ec3n t\u1eeb h\u1ec7 th\u1ed1ng (th\u01b0\u1eddng d\u1ef1a tr\u00ean d\u1eef li\u1ec7u c\u1ea3m bi\u1ebfn) v\u00e0 th\u1ef1c hi\u1ec7n h\u00e0nh \u0111\u1ed9ng c\u1ee5 th\u1ec3, v\u00ed d\u1ee5 nh\u01b0 m\u1edf van, b\u1eadt \u0111\u00e8n, \u0111i\u1ec1u ch\u1ec9nh \u0111\u1ed9ng c\u01a1&#8230;<\/span><\/li>\n<\/ul>\n<h3><b>H\u00e3y cho bi\u1ebft t\u1ea7m quan tr\u1ecdng c\u1ee7a vi\u1ec7c c\u1eadp nh\u1eadt c\u00e1c ch\u01b0\u01a1ng tr\u00ecnh c\u01a1 s\u1edf trong thi\u1ebft b\u1ecb IoT<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">C\u1eadp nh\u1eadt ch\u01b0\u01a1ng tr\u00ecnh c\u01a1 s\u1edf (firmware) r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 v\u00e1 c\u00e1c l\u1ed7 h\u1ed5ng b\u1ea3o m\u1eadt v\u00e0 b\u1ea3o v\u1ec7 thi\u1ebft b\u1ecb IoT kh\u1ecfi nh\u1eefng m\u1ed1i \u0111e d\u1ecda ti\u1ec1m t\u00e0ng. Ngo\u00e0i ra, vi\u1ec7c c\u1eadp nh\u1eadt c\u00f2n gi\u00fap c\u1ea3i thi\u1ec7n hi\u1ec7u su\u1ea5t thi\u1ebft b\u1ecb, b\u1ed5 sung t\u00ednh n\u0103ng m\u1edbi v\u00e0 \u0111\u1ea3m b\u1ea3o t\u00ednh t\u01b0\u01a1ng th\u00edch v\u1edbi c\u00e1c th\u00e0nh ph\u1ea7n h\u1ec7 th\u1ed1ng kh\u00e1c.<\/span><\/p>\n<blockquote><p><em>\u0110\u1ecdc th\u00eam: <a href=\"https:\/\/itviec.com\/blog\/thiet-bi-iot-la-gi\/\" target=\"_blank\" rel=\"noopener\"><strong>Thi\u1ebft b\u1ecb IoT l\u00e0 g\u00ec? Top 10+ thi\u1ebft b\u1ecb \u1ee9ng d\u1ee5ng IoT ph\u1ed5 bi\u1ebfn 2025<\/strong><\/a><\/em><\/p><\/blockquote>\n<h2><span class=\"ez-toc-section\" id=\"Cau_hoi_phong_van_giao_thuc_truyen_thong_IoT\"><\/span><b>C\u00e2u h\u1ecfi ph\u1ecfng v\u1ea5n giao th\u1ee9c truy\u1ec1n th\u00f4ng IoT<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><b>So s\u00e1nh MQTT v\u00e0 CoAP khi tri\u1ec3n khai IoT<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">MQTT v\u00e0 CoAP \u0111\u1ec1u l\u00e0 c\u00e1c giao th\u1ee9c \u1ee9ng d\u1ee5ng \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf cho m\u00f4i tr\u01b0\u1eddng IoT. CoAP ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c t\u00ecnh hu\u1ed1ng h\u1ea1n ch\u1ebf nh\u1edd c\u01a1 ch\u1ebf y\u00eau c\u1ea7u &#8211; ph\u1ea3n h\u1ed3i qua UDP. Trong khi \u0111\u00f3, MQTT \u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng cho vi\u1ec7c giao ti\u1ebfp \u0111\u00e1ng tin c\u1eady v\u1edbi b\u0103ng th\u00f4ng th\u1ea5p, s\u1eed d\u1ee5ng m\u00f4 h\u00ecnh xu\u1ea5t b\u1ea3n theo ch\u1ee7 \u0111\u1ec1 (publish &#8211; subscribe) c\u1ee7a TCP, r\u1ea5t l\u00fd t\u01b0\u1edfng cho giao ti\u1ebfp gi\u1eefa c\u00e1c thi\u1ebft b\u1ecb (M2M).<\/span><\/p>\n<table>\n<tbody>\n<tr>\n<td><b>Ti\u00eau ch\u00ed<\/b><\/td>\n<td><b>CoAP &#8211; <\/b><span style=\"font-weight: 400;\">Constrained Application Protocol<\/span><\/td>\n<td><b>MQTT &#8211; <\/b><span style=\"font-weight: 400;\">Message Queuing Telemetry Transport<\/span><\/td>\n<\/tr>\n<tr>\n<td><b>Lo\u1ea1i giao ti\u1ebfp<\/b><\/td>\n<td><span style=\"font-weight: 400;\">S\u1eed d\u1ee5ng m\u00f4 h\u00ecnh y\u00eau c\u1ea7u &#8211; ph\u1ea3n h\u1ed3i<\/span><\/td>\n<td><span style=\"font-weight: 400;\">S\u1eed d\u1ee5ng m\u00f4 h\u00ecnh xu\u1ea5t b\u1ea3n theo ch\u1ee7 \u0111\u1ec1<\/span><\/td>\n<\/tr>\n<tr>\n<td><b>Ch\u1ebf \u0111\u1ed9 nh\u1eafn tin<\/b><\/td>\n<td><span style=\"font-weight: 400;\">\u0110\u1ed3ng b\u1ed9 v\u00e0 b\u1ea5t \u0111\u1ed3ng b\u1ed9<\/span><\/td>\n<td><span style=\"font-weight: 400;\">B\u1ea5t \u0111\u1ed3ng b\u1ed9<\/span><\/td>\n<\/tr>\n<tr>\n<td><b>Giao th\u1ee9c t\u1ea7ng v\u1eadn chuy\u1ec3n<\/b><\/td>\n<td><span style=\"font-weight: 400;\">Ch\u1ee7 y\u1ebfu s\u1eed d\u1ee5ng UDP<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Ch\u1ee7 y\u1ebfu s\u1eed d\u1ee5ng TCP<\/span><\/td>\n<\/tr>\n<tr>\n<td><b>K\u00edch th\u01b0\u1edbc header<\/b><\/td>\n<td><span style=\"font-weight: 400;\">Header k\u00edch th\u01b0\u1edbc 4 byte<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Header k\u00edch th\u01b0\u1edbc 2 byte<\/span><\/td>\n<\/tr>\n<tr>\n<td><b>D\u1ef1a tr\u00ean RESTful<\/b><\/td>\n<td><span style=\"font-weight: 400;\">Tu\u00e2n th\u1ee7 nguy\u00ean l\u00fd REST<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Kh\u00f4ng tu\u00e2n th\u1ee7 nguy\u00ean l\u00fd REST<\/span><\/td>\n<\/tr>\n<tr>\n<td><b>H\u1ed7 tr\u1ee3 l\u01b0u tr\u1eef<\/b><\/td>\n<td><span style=\"font-weight: 400;\">Kh\u00f4ng h\u1ed7 tr\u1ee3 l\u01b0u tr\u1eef<\/span><\/td>\n<td><span style=\"font-weight: 400;\">H\u1ed7 tr\u1ee3 l\u01b0u tr\u1eef v\u00e0 th\u00edch h\u1ee3p cho vi\u1ec7c truy\u1ec1n t\u1ea3i d\u1eef li\u1ec7u tr\u1ef1c ti\u1ebfp<\/span><\/td>\n<\/tr>\n<tr>\n<td><b>G\u1eafn nh\u00e3n tin nh\u1eafn<\/b><\/td>\n<td><span style=\"font-weight: 400;\">Cung c\u1ea5p b\u1eb1ng c\u00e1ch th\u00eam nh\u00e3n v\u00e0o tin nh\u1eafn<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Kh\u00f4ng c\u00f3 t\u00ednh n\u0103ng n\u00e0y<\/span><\/td>\n<\/tr>\n<tr>\n<td><b>Kh\u1ea3 n\u0103ng s\u1eed d\u1ee5ng\/B\u1ea3o m\u1eadt<\/b><\/td>\n<td><span style=\"font-weight: 400;\">D\u00f9ng trong m\u1ea1ng l\u01b0\u1edbi ti\u1ec7n \u00edch v\u00e0 c\u00f3 h\u1ed7 tr\u1ee3 DTLS \u0111\u1ec3 b\u1ea3o m\u1eadt<\/span><\/td>\n<td><span style=\"font-weight: 400;\">&#8211; B\u1ea3o m\u1eadt ph\u1ee5 thu\u1ed9c v\u00e0o c\u1ea5u h\u00ecnh broker<\/span><\/p>\n<p><span style=\"font-weight: 400;\">&#8211; H\u1ed7 tr\u1ee3 TLS\/SSL \u0111\u1ec3 m\u00e3 h\u00f3a d\u1eef li\u1ec7u<\/span><\/td>\n<\/tr>\n<tr>\n<td><b>Hi\u1ec7u qu\u1ea3<\/b><\/td>\n<td><span style=\"font-weight: 400;\">Hi\u1ec7u qu\u1ea3 trong c\u00e1c m\u1ea1ng l\u01b0\u1edbi h\u1ea1n ch\u1ebf (LNN) r\u1ea5t t\u1ed1t<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Hi\u1ec7u qu\u1ea3 trong c\u00e1c m\u1ea1ng l\u01b0\u1edbi h\u1ea1n ch\u1ebf (LNN) th\u1ea5p<\/span><\/td>\n<\/tr>\n<tr>\n<td><b>M\u00f4 h\u00ecnh giao ti\u1ebfp<\/b><\/td>\n<td><span style=\"font-weight: 400;\">M\u00f4 h\u00ecnh giao ti\u1ebfp m\u1ed9t &#8211; m\u1ed9t<\/span><\/td>\n<td><span style=\"font-weight: 400;\">M\u00f4 h\u00ecnh giao ti\u1ebfp nhi\u1ec1u &#8211; m\u1ed9t<\/span><\/td>\n<\/tr>\n<tr>\n<td><b>\u1ee8ng d\u1ee5ng<\/b><\/td>\n<td><span style=\"font-weight: 400;\">&#8211; \u1ee8ng d\u1ee5ng trong m\u1ea1ng c\u1ea3m bi\u1ebfn kh\u00f4ng d\u00e2y (LoRaWAN)\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">&#8211; IoT \u0110\u00f4 th\u1ecb (qu\u1ea3n l\u00fd \u0111\u00e8n \u0111\u01b0\u1eddng, b\u00e3i gi\u1eef xe)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">&#8211; \u1ee8ng d\u1ee5ng trong nh\u00e0 th\u00f4ng m\u00ecnh (\u0111i\u1ec1u khi\u1ec3n \u0111\u00e8n, t\u1ee7 l\u1ea1nh), y t\u1ebf (theo d\u00f5i d\u1eef li\u1ec7u b\u00eanh nh\u00e2n)<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3><b> LoRaWAN, NB-IoT, SigFox v\u00e0 LTE kh\u00e1c nhau \u1edf \u0111i\u1ec3m n\u00e0o?<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">LoRaWAN, NB-IoT, SigFox v\u00e0 LTE l\u00e0 c\u00e1c c\u00f4ng ngh\u1ec7 truy\u1ec1n th\u00f4ng kh\u00e1c nhau d\u00e0nh cho IoT. Nh\u1eefng \u0111i\u1ec3m kh\u00e1c bi\u1ec7t c\u1ee7a ch\u00fang c\u00f3 th\u1ec3 so s\u00e1nh b\u1eb1ng b\u1ea3ng sau:<\/span><\/p>\n<table>\n<tbody>\n<tr>\n<td><b>Ti\u00eau ch\u00ed<\/b><\/td>\n<td><b>LoRaWAN<\/b><\/td>\n<td><b>NB-IoT<\/b><\/td>\n<td><b>SigFox<\/b><\/td>\n<td><b>LTE<\/b><\/td>\n<\/tr>\n<tr>\n<td><b>Ph\u1ea1m vi ph\u1ee7 s\u00f3ng<\/b><\/td>\n<td><span style=\"font-weight: 400;\">Ph\u1ea1m vi xa (l\u00ean \u0111\u1ebfn 15 km)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Gi\u1edbi h\u1ea1n trong ph\u1ea1m vi m\u1ea1ng di \u0111\u1ed9ng<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Ph\u1ea1m vi r\u1ed9ng \u1edf c\u00e1c khu v\u1ef1c h\u1ed7 tr\u1ee3 Sigfox<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Ph\u1ea1m vi to\u00e0n c\u1ea7u v\u1edbi m\u1ea1ng LTE<\/span><\/td>\n<\/tr>\n<tr>\n<td><b>M\u1ee9c ti\u00eau th\u1ee5 n\u0103ng l\u01b0\u1ee3ng<\/b><\/td>\n<td><span style=\"font-weight: 400;\">Ti\u00eau th\u1ee5 n\u0103ng l\u01b0\u1ee3ng th\u1ea5p, pin 5 &#8211; 10 n\u0103m<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Ti\u00eau th\u1ee5 n\u0103ng l\u01b0\u1ee3ng th\u1ea5p nh\u01b0ng cao h\u01a1n LoRaWAN do \u0111\u1ed3ng b\u1ed9 m\u1ea1ng<\/span><\/td>\n<td><span style=\"font-weight: 400;\">N\u0103ng l\u01b0\u1ee3ng ti\u00eau th\u1ee5 c\u1ef1c th\u1ea5p, ph\u00f9 h\u1ee3p cho d\u1eef li\u1ec7u nh\u1ecf<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Ti\u00eau th\u1ee5 n\u0103ng l\u01b0\u1ee3ng cao<\/span><\/td>\n<\/tr>\n<tr>\n<td><b>T\u1ed1c \u0111\u1ed9 d\u1eef li\u1ec7u<\/b><\/td>\n<td><span style=\"font-weight: 400;\">0.3\u201350 kbps<\/span><\/td>\n<td><span style=\"font-weight: 400;\">T\u1ed1i \u0111a 250 kbps<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Kho\u1ea3ng 100 bps<\/span><\/td>\n<td><span style=\"font-weight: 400;\">1\u2013150 Mbps<\/span><\/td>\n<\/tr>\n<tr>\n<td><b>Chi ph\u00ed<\/b><\/td>\n<td><span style=\"font-weight: 400;\">Thi\u1ebft b\u1ecb gi\u00e1 r\u1ebb v\u00e0 kh\u00f4ng ph\u00ed \u0111\u1ecbnh k\u1ef3 tr\u00ean m\u1ea1ng ri\u00eang<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Gi\u00e1 v\u1eeba ph\u1ea3i (cao\u00a0 h\u01a1n LoRaWAN &amp; Sigfox)\u00a0<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Thi\u1ebft b\u1ecb gi\u00e1 r\u1ebb nh\u01b0ng c\u1ea7n \u0111\u0103ng k\u00fd m\u1ea1ng<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Chi ph\u00ed module v\u00e0 ph\u00ed d\u1eef li\u1ec7u cao h\u01a1n<\/span><\/td>\n<\/tr>\n<tr>\n<td><b>\u0110\u1ed9 ph\u1ee9c t\u1ea1p khi tri\u1ec3n khai<\/b><\/td>\n<td><span style=\"font-weight: 400;\">C\u1ea7n c\u00f3 gateway nh\u01b0ng d\u1ec5 thi\u1ebft l\u1eadp<\/span><\/td>\n<td><span style=\"font-weight: 400;\">C\u1eafm v\u00e0 ch\u1ea1y v\u1edbi nh\u00e0 cung c\u1ea5p, kh\u00f4ng c\u1ea7n c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u0110\u01a1n gi\u1ea3n nh\u01b0ng gi\u1edbi h\u1ea1n trong c\u00e1c m\u1ea1ng Sigfox hi\u1ec7n c\u00f3<\/span><\/td>\n<td><span style=\"font-weight: 400;\">D\u1ec5 tri\u1ec3n khai nh\u01b0ng c\u1ea7n qu\u1ea3n l\u00fd SIM<\/span><\/td>\n<\/tr>\n<tr>\n<td><b>Ph\u00f9 h\u1ee3p v\u1edbi<\/b><\/td>\n<td><span style=\"font-weight: 400;\">Th\u00e0nh ph\u1ed1 th\u00f4ng minh, ti\u1ec7n \u00edch, n\u00f4ng nghi\u1ec7p<\/span><\/td>\n<td><span style=\"font-weight: 400;\">IoT c\u00f4ng nghi\u1ec7p, gi\u00e1m s\u00e1t \u0111\u00f4 th\u1ecb<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Theo d\u00f5i t\u00e0i s\u1ea3n, logistics<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u1ee8ng d\u1ee5ng c\u1ea7n d\u1eef li\u1ec7u l\u1edbn, video, tho\u1ea1i<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3><b>Khi n\u00e0o n\u00ean d\u00f9ng giao th\u1ee9c MQTT thay v\u00ec HTTP trong m\u1ed9t d\u1ef1 \u00e1n IoT?<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">Giao th\u1ee9c MQTT ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c d\u1ef1 \u00e1n IoT khi c\u1ea7n truy\u1ec1n t\u1ea3i d\u1eef li\u1ec7u hi\u1ec7u qu\u1ea3, ti\u1ebft ki\u1ec7m b\u0103ng th\u00f4ng v\u00e0 gi\u1ea3m \u0111\u1ed9 tr\u1ec5. MQTT \u0111\u1eb7c bi\u1ec7t th\u00edch h\u1ee3p cho c\u00e1c \u1ee9ng d\u1ee5ng y\u00eau c\u1ea7u truy\u1ec1n t\u1ea3i d\u1eef li\u1ec7u th\u1eddi gian th\u1ef1c, giao ti\u1ebfp li\u00ean t\u1ee5c, ho\u1eb7c ho\u1ea1t \u0111\u1ed9ng trong m\u00f4i tr\u01b0\u1eddng c\u00f3 k\u1ebft n\u1ed1i kh\u00f4ng \u1ed5n \u0111\u1ecbnh v\u00e0 h\u1ea1n ch\u1ebf n\u0103ng l\u01b0\u1ee3ng. Trong khi \u0111\u00f3, HTTP ph\u00f9 h\u1ee3p h\u01a1n cho c\u00e1c truy\u1ec1n t\u1ea3i d\u1eef li\u1ec7u \u00edt t\u1ea7n su\u1ea5t v\u00e0 y\u00eau c\u1ea7u b\u0103ng th\u00f4ng l\u1edbn h\u01a1n.<\/span><\/p>\n<h3><b>B\u1ea1n hi\u1ec3u g\u00ec v\u1ec1 m\u00f4 h\u00ecnh Publish &#8211; Subscribe? T\u1ea1i sao n\u00f3 ph\u00f9 h\u1ee3p v\u1edbi IoT?<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">M\u00f4 h\u00ecnh Publish &#8211; Subscribe (Pub\/Sub) l\u00e0 m\u1ed9t ph\u01b0\u01a1ng th\u1ee9c giao ti\u1ebfp b\u1ea5t \u0111\u1ed3ng b\u1ed9, gi\u00fap c\u00e1c h\u1ec7 th\u1ed1ng ph\u00e2n t\u00e1n truy\u1ec1n t\u1ea3i th\u00f4ng \u0111i\u1ec7p m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3 m\u00e0 kh\u00f4ng c\u1ea7n k\u1ebft n\u1ed1i tr\u1ef1c ti\u1ebfp gi\u1eefa c\u00e1c th\u00e0nh ph\u1ea7n. Publisher g\u1eedi th\u00f4ng \u0111i\u1ec7p \u0111\u1ebfn c\u00e1c topic v\u00e0 c\u00e1c Subscriber \u0111\u0103ng k\u00fd \u0111\u1ec3 nh\u1eadn th\u00f4ng tin t\u1eeb nh\u1eefng topic quan t\u00e2m. \u0110\u00e2y l\u00e0 m\u00f4 h\u00ecnh l\u00fd t\u01b0\u1edfng cho IoT, v\u00ec n\u00f3 h\u1ed7 tr\u1ee3 giao ti\u1ebfp th\u1eddi gian th\u1ef1c, gi\u1ea3m \u0111\u1ed9 tr\u1ec5 v\u00e0 gi\u00fap ti\u1ebft ki\u1ec7m t\u00e0i nguy\u00ean trong c\u00e1c h\u1ec7 th\u1ed1ng v\u1edbi nhi\u1ec1u thi\u1ebft b\u1ecb.<\/span><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Cau_hoi_phong_van_ve_bao_mat_IoT\"><\/span><b>C\u00e2u h\u1ecfi ph\u1ecfng v\u1ea5n v\u1ec1 b\u1ea3o m\u1eadt IoT<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><b>C\u00f3 nh\u1eefng c\u00e1ch n\u00e0o b\u1ea3o v\u1ec7 thi\u1ebft b\u1ecb IoT kh\u1ecfi b\u1ecb t\u1ea5n c\u00f4ng?<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">\u0110\u1ec3 b\u1ea3o v\u1ec7 c\u00e1c thi\u1ebft b\u1ecb IoT kh\u1ecfi c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng, c\u00f3 th\u1ec3 th\u1ef1c hi\u1ec7n c\u00e1c c\u00e1ch sau \u0111\u00e2y:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">S\u1eed d\u1ee5ng m\u1eadt kh\u1ea9u m\u1ea1nh, thay \u0111\u1ed5i m\u1eadt kh\u1ea9u m\u1eb7c \u0111\u1ecbnh ngay t\u1eeb \u0111\u1ea7u.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">C\u1eadp nh\u1eadt ph\u1ea7n m\u1ec1m v\u00e0 firmware \u0111\u1ecbnh k\u1ef3 \u0111\u1ec3 v\u00e1 c\u00e1c l\u1ed7 h\u1ed5ng b\u1ea3o m\u1eadt.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Ph\u00e2n \u0111o\u1ea1n m\u1ea1ng, t\u00e1ch ri\u00eang thi\u1ebft b\u1ecb IoT kh\u1ecfi c\u00e1c h\u1ec7 th\u1ed1ng quan tr\u1ecdng kh\u00e1c.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">M\u00e3 h\u00f3a d\u1eef li\u1ec7u trong qu\u00e1 tr\u00ecnh truy\u1ec1n v\u00e0 l\u01b0u tr\u1eef \u0111\u1ec3 ng\u0103n ch\u1eb7n r\u00f2 r\u1ec9 th\u00f4ng tin.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Tri\u1ec3n khai h\u1ec7 th\u1ed1ng ph\u00e1t hi\u1ec7n v\u00e0 ng\u0103n ch\u1eb7n x\u00e2m nh\u1eadp nh\u1eb1m ph\u00e1t hi\u1ec7n s\u1edbm h\u00e0nh vi b\u1ea5t th\u01b0\u1eddng.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">L\u00e0m vi\u1ec7c v\u1edbi \u0111\u01a1n v\u1ecb ph\u00e1t tri\u1ec3n IoT chuy\u00ean nghi\u1ec7p \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o thi\u1ebft b\u1ecb \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf an to\u00e0n ngay t\u1eeb \u0111\u1ea7u.<\/span><\/li>\n<\/ul>\n<h3><b>B\u1ea1n s\u1ebd \u00e1p d\u1ee5ng nh\u1eefng chi\u1ebfn l\u01b0\u1ee3c n\u00e0o \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o t\u00ednh to\u00e0n v\u1eb9n d\u1eef li\u1ec7u?<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">\u0110\u1ec3 \u0111\u1ea3m b\u1ea3o t\u00ednh to\u00e0n v\u1eb9n c\u1ee7a d\u1eef li\u1ec7u, c\u00f3 th\u1ec3 \u00e1p d\u1ee5ng nh\u1eefng chi\u1ebfn l\u01b0\u1ee3c sau \u0111\u00e2y:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>\u00c1p d\u1ee5ng giao th\u1ee9c b\u1ea3o m\u1eadt <\/b><span style=\"font-weight: 400;\">nh\u01b0 TLS (cho HTTP, MQTT) ho\u1eb7c DTLS (cho CoAP)<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>D\u00f9ng h\u00e0m b\u0103m (hash) ho\u1eb7c checksum<\/b><span style=\"font-weight: 400;\"> \u0111\u1ec3 ph\u00e1t hi\u1ec7n thay \u0111\u1ed5i d\u1eef li\u1ec7u.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Sao l\u01b0u \u0111\u1ecbnh k\u1ef3<\/b><span style=\"font-weight: 400;\"> \u0111\u1ec3 kh\u00f4i ph\u1ee5c d\u1eef li\u1ec7u khi c\u1ea7n.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Ki\u1ec3m so\u00e1t truy c\u1eadp<\/b><span style=\"font-weight: 400;\">, ch\u1ec9 cho ph\u00e9p ng\u01b0\u1eddi c\u00f3 th\u1ea9m quy\u1ec1n ch\u1ec9nh s\u1eeda d\u1eef li\u1ec7u.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>M\u00e3 h\u00f3a \u0111\u1ea7u cu\u1ed1i (end-to-end encryption)<\/b><span style=\"font-weight: 400;\"> khi l\u01b0u tr\u1eef v\u00e0 truy\u1ec1n t\u1ea3i.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Gi\u00e1m s\u00e1t an ninh m\u1ea1ng<\/b><span style=\"font-weight: 400;\"> \u0111\u1ec3 ph\u00e1t hi\u1ec7n h\u00e0nh vi b\u1ea5t th\u01b0\u1eddng.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>\u0110\u00e0o t\u1ea1o ng\u01b0\u1eddi d\u00f9ng<\/b><span style=\"font-weight: 400;\"> \u0111\u1ec3 h\u1ea1n ch\u1ebf sai s\u00f3t ho\u1eb7c h\u00e0nh vi v\u00f4 \u00fd g\u00e2y \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn d\u1eef li\u1ec7u.<\/span><\/li>\n<\/ul>\n<h3><b>B\u1ea1n hi\u1ec3u g\u00ec v\u1ec1 Shodan?<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">Shodan l\u00e0 c\u00f4ng c\u1ee5 t\u00ecm ki\u1ebfm gi\u00fap nh\u1eadn di\u1ec7n c\u00e1c thi\u1ebft b\u1ecb \u0111ang k\u1ebft n\u1ed1i tr\u1ef1c ti\u1ebfp v\u1edbi Internet, nh\u01b0 camera an ninh, router, m\u00e1y in hay thi\u1ebft b\u1ecb nh\u00e0 th\u00f4ng minh. Ng\u01b0\u1eddi d\u00f9ng c\u00f3 th\u1ec3 ki\u1ec3m tra thi\u1ebft b\u1ecb c\u1ee7a m\u00ecnh c\u00f3 \u0111ang b\u1ecb c\u00f4ng khai tr\u00ean m\u1ea1ng hay kh\u00f4ng, t\u1eeb \u0111\u00f3 ph\u00e1t hi\u1ec7n v\u00e0 kh\u1eafc ph\u1ee5c c\u00e1c r\u1ee7i ro b\u1ea3o m\u1eadt.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">V\u00ed d\u1ee5: M\u1ed9t ng\u01b0\u1eddi l\u1eafp camera gi\u00e1m s\u00e1t t\u1ea1i nh\u00e0 nh\u01b0ng kh\u00f4ng thay \u0111\u1ed5i thi\u1ebft l\u1eadp m\u1eb7c \u0111\u1ecbnh, khi\u1ebfn thi\u1ebft b\u1ecb b\u1ecb l\u1ed9 tr\u00ean Internet. Nh\u1edd s\u1eed d\u1ee5ng Shodan, h\u1ecd ph\u00e1t hi\u1ec7n camera xu\u1ea5t hi\u1ec7n trong k\u1ebft qu\u1ea3 t\u00ecm ki\u1ebfm k\u00e8m \u0111\u1ecba ch\u1ec9 IP v\u00e0 c\u1ed5ng truy c\u1eadp, t\u1eeb \u0111\u00f3 k\u1ecbp th\u1eddi \u0111\u1ed5i m\u1eadt kh\u1ea9u v\u00e0 t\u1eaft truy c\u1eadp t\u1eeb xa \u0111\u1ec3 ng\u0103n b\u1ecb x\u00e2m nh\u1eadp.<\/span><\/p>\n<h3><b>L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 tri\u1ec3n khai x\u00e1c th\u1ef1c thi\u1ebft b\u1ecb trong IoT?<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">\u0110\u1ec3 tri\u1ec3n khai x\u00e1c th\u1ef1c thi\u1ebft b\u1ecb trong m\u1ea1ng IoT, b\u1ea1n s\u1eed d\u1ee5ng m\u00e3 \u0111\u1ecbnh danh thi\u1ebft b\u1ecb duy nh\u1ea5t k\u1ebft h\u1ee3p v\u1edbi ch\u1ee9ng ch\u1ec9 s\u1ed1 nh\u1eb1m \u0111\u1ea3m b\u1ea3o x\u00e1c th\u1ef1c an to\u00e0n. \u0110\u1ed3ng th\u1eddi, \u00e1p d\u1ee5ng c\u00e1c giao th\u1ee9c x\u00e1c th\u1ef1c l\u1eabn nhau \u0111\u1ec3 x\u00e1c minh danh t\u00ednh c\u1ee7a c\u1ea3 thi\u1ebft b\u1ecb v\u00e0 m\u00e1y ch\u1ee7. C\u00e1c kh\u00f3a x\u00e1c th\u1ef1c v\u00e0 th\u00f4ng tin x\u00e1c th\u1ef1c c\u0169ng \u0111\u01b0\u1ee3c c\u1eadp nh\u1eadt \u0111\u1ecbnh k\u1ef3 nh\u1eb1m duy tr\u00ec t\u00ednh to\u00e0n v\u1eb9n v\u00e0 b\u1ea3o m\u1eadt h\u1ec7 th\u1ed1ng.<\/span><\/p>\n<h3><b>H\u00e3y k\u1ec3 t\u00ean m\u1ed9t s\u1ed1 ph\u01b0\u01a1ng ph\u00e1p m\u00e3 h\u00f3a ph\u1ed5 bi\u1ebfn cho d\u1eef li\u1ec7u IoT<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">M\u1ed9t s\u1ed1 ph\u01b0\u01a1ng ph\u00e1p m\u00e3 h\u00f3a ph\u1ed5 bi\u1ebfn cho d\u1eef li\u1ec7u IoT bao g\u1ed3m:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>AES (Advanced Encryption Standard): <\/b><span style=\"font-weight: 400;\">\u0110\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i nh\u1edd t\u00ednh b\u1ea3o m\u1eadt cao v\u00e0 hi\u1ec7u su\u1ea5t t\u1ed1t.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>RSA (Rivest-Shamir-Adleman): <\/b><span style=\"font-weight: 400;\">Ph\u01b0\u01a1ng ph\u00e1p m\u00e3 h\u00f3a kh\u00f3a c\u00f4ng khai m\u1ea1nh m\u1ebd, th\u00edch h\u1ee3p cho c\u00e1c giao d\u1ecbch b\u1ea3o m\u1eadt.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>ECC (Elliptic Curve Cryptography):<\/b><span style=\"font-weight: 400;\"> Ph\u01b0\u01a1ng ph\u00e1p m\u00e3 h\u00f3a hi\u1ec7u qu\u1ea3 v\u00e0 nh\u1eb9, r\u1ea5t ph\u00f9 h\u1ee3p cho c\u00e1c thi\u1ebft b\u1ecb IoT v\u1edbi t\u00e0i nguy\u00ean h\u1ea1n ch\u1ebf.<\/span><\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"Cau_hoi_phong_van_IoT_ve_dien_toan_dam_may_va_phan_tich_du_lieu\"><\/span><b>C\u00e2u h\u1ecfi ph\u1ecfng v\u1ea5n IoT v\u1ec1 \u0111i\u1ec7n to\u00e1n \u0111\u00e1m m\u00e2y v\u00e0 ph\u00e2n t\u00edch d\u1eef li\u1ec7u<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><b>Vai tr\u00f2 c\u1ee7a cloud computing trong m\u1ed9t gi\u1ea3i ph\u00e1p IoT l\u00e0 g\u00ec?<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">\u0110i\u1ec7n to\u00e1n \u0111\u00e1m m\u00e2y h\u1ed7 tr\u1ee3 IoT b\u1eb1ng c\u00e1ch cung c\u1ea5p b\u1ed9 nh\u1edb v\u00e0 s\u1ee9c m\u1ea1nh t\u00ednh to\u00e1n cho c\u00e1c \u1ee9ng d\u1ee5ng IoT. C\u00e1c c\u00f4ng ty c\u00f3 th\u1ec3 l\u01b0u tr\u1eef d\u1eef li\u1ec7u tr\u00ean c\u00e1c m\u00e1y ch\u1ee7 t\u1eeb xa, truy c\u1eadp m\u1ecdi l\u00fac m\u1ecdi n\u01a1i, gi\u00fap c\u00e1c thi\u1ebft b\u1ecb lu\u00f4n k\u1ebft n\u1ed1i v\u00e0 \u0111\u1ea3m b\u1ea3o vi\u1ec7c trao \u0111\u1ed5i d\u1eef li\u1ec7u th\u1eddi gian th\u1ef1c.<\/span><\/p>\n<h3><b>Edge Computing kh\u00e1c g\u00ec so v\u1edbi Cloud Computing?\u00a0<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">S\u1ef1 kh\u00e1c nhau gi\u1eefa Edge Computing v\u00e0 Cloud Computing \u0111\u01b0\u1ee3c so s\u00e1nh d\u1ef1a tr\u00ean c\u00e1c ri\u00eau ch\u00ed sau:<\/span><\/p>\n<table>\n<tbody>\n<tr>\n<td><b>Ti\u00eau ch\u00ed<\/b><\/td>\n<td><b>Edge Computing<\/b><\/td>\n<td><b>Cloud Computing<\/b><\/td>\n<\/tr>\n<tr>\n<td><b>\u0110\u1ecbnh ngh\u0129a<\/b><\/td>\n<td><span style=\"font-weight: 400;\">Ki\u1ebfn tr\u00fac t\u00ednh to\u00e1n ph\u00e2n t\u00e1n x\u1eed l\u00fd v\u00e0 l\u01b0u tr\u1eef g\u1ea7n ngu\u1ed3n d\u1eef li\u1ec7u.<\/span><\/td>\n<td><span style=\"font-weight: 400;\">M\u00f4 h\u00ecnh cung c\u1ea5p d\u1ecbch v\u1ee5 CNTT qua Internet.<\/span><\/td>\n<\/tr>\n<tr>\n<td><b>V\u1ecb tr\u00ed x\u1eed l\u00fd<\/b><\/td>\n<td><span style=\"font-weight: 400;\">X\u1eed l\u00fd g\u1ea7n thi\u1ebft b\u1ecb, ngay t\u1ea1i bi\u00ean m\u1ea1ng.<\/span><\/td>\n<td><span style=\"font-weight: 400;\">X\u1eed l\u00fd t\u1ea1i trung t\u00e2m d\u1eef li\u1ec7u.<\/span><\/td>\n<\/tr>\n<tr>\n<td><b>Y\u00eau c\u1ea7u b\u0103ng th\u00f4ng<\/b><\/td>\n<td><span style=\"font-weight: 400;\">C\u1ea7n b\u0103ng th\u00f4ng th\u1ea5p.<\/span><\/td>\n<td><span style=\"font-weight: 400;\">C\u1ea7n b\u0103ng th\u00f4ng cao do ph\u1ea3i truy\u1ec1n t\u1ea3i d\u1eef li\u1ec7u \u0111\u1ebfn trung t\u00e2m.<\/span><\/td>\n<\/tr>\n<tr>\n<td><b>Chi ph\u00ed<\/b><\/td>\n<td><span style=\"font-weight: 400;\">Chi ph\u00ed cao h\u01a1n, y\u00eau c\u1ea7u ph\u1ea7n c\u1ee9ng v\u00e0 ph\u1ea7n m\u1ec1m chuy\u00ean bi\u1ec7t.<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Chi ph\u00ed th\u1ea5p h\u01a1n, ng\u01b0\u1eddi d\u00f9ng ch\u1ec9 tr\u1ea3 cho t\u00e0i nguy\u00ean s\u1eed d\u1ee5ng.<\/span><\/td>\n<\/tr>\n<tr>\n<td><b>M\u1edf r\u1ed9ng<\/b><\/td>\n<td><span style=\"font-weight: 400;\">Kh\u00f3 m\u1edf r\u1ed9ng, c\u1ea7n th\u00eam t\u00e0i nguy\u00ean t\u1ea1i bi\u00ean.<\/span><\/td>\n<td><span style=\"font-weight: 400;\">D\u1ec5 d\u00e0ng m\u1edf r\u1ed9ng, ng\u01b0\u1eddi d\u00f9ng c\u00f3 th\u1ec3 \u0111i\u1ec1u ch\u1ec9nh t\u00e0i nguy\u00ean linh ho\u1ea1t.<\/span><\/td>\n<\/tr>\n<tr>\n<td><b>\u1ee8ng d\u1ee5ng<\/b><\/td>\n<td><span style=\"font-weight: 400;\">Ph\u00f9 h\u1ee3p v\u1edbi \u1ee9ng d\u1ee5ng y\u00eau c\u1ea7u \u0111\u1ed9 tr\u1ec5 th\u1ea5p, nh\u01b0 IoT, xe t\u1ef1 l\u00e1i.<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Ph\u00f9 h\u1ee3p v\u1edbi \u1ee9ng d\u1ee5ng kh\u00f4ng y\u00eau c\u1ea7u \u0111\u1ed9 tr\u1ec5 nghi\u00eam ng\u1eb7t, nh\u01b0 email, l\u01b0u tr\u1eef t\u1ec7p.<\/span><\/td>\n<\/tr>\n<tr>\n<td><b>B\u1ea3o m\u1eadt d\u1eef li\u1ec7u<\/b><\/td>\n<td><span style=\"font-weight: 400;\">B\u1ea3o m\u1eadt t\u1ed1t nh\u1edd x\u1eed l\u00fd g\u1ea7n ngu\u1ed3n, kh\u00f4ng truy\u1ec1n qua m\u1ea1ng.<\/span><\/td>\n<td><span style=\"font-weight: 400;\">B\u1ea3o m\u1eadt kh\u00f3 kh\u0103n do d\u1eef li\u1ec7u ph\u1ea3i truy\u1ec1n qua m\u1ea1ng \u0111\u1ebfn trung t\u00e2m.<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3><b>L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 tri\u1ec3n khai m\u1ed9t thi\u1ebft b\u1ecb IoT c\u01a1 b\u1ea3n g\u1eedi d\u1eef li\u1ec7u l\u00ean d\u1ecbch v\u1ee5 \u0111\u00e1m m\u00e2y?<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">\u0110\u1ec3 l\u00e0m \u0111i\u1ec1u n\u00e0y, t\u00f4i s\u1ebd ch\u1ecdn ph\u1ea7n c\u1ee9ng ph\u00f9 h\u1ee3p nh\u01b0 c\u1ea3m bi\u1ebfn v\u00e0 vi \u0111i\u1ec1u khi\u1ec3n, c\u1ea5u h\u00ecnh thi\u1ebft b\u1ecb \u0111\u1ec3 k\u1ebft n\u1ed1i Internet qua Wi-Fi. Sau \u0111\u00f3, s\u1eed d\u1ee5ng API c\u1ee7a n\u1ec1n t\u1ea3ng \u0111\u00e1m m\u00e2y (v\u00ed d\u1ee5 AWS, Azure ho\u1eb7c Firebase) \u0111\u1ec3 g\u1eedi v\u00e0 l\u01b0u tr\u1eef d\u1eef li\u1ec7u m\u1ed9t c\u00e1ch b\u1ea3o m\u1eadt.<\/span><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Cau_hoi_phong_van_ve_thiet_ke_he_thong_IoT\"><\/span><b>C\u00e2u h\u1ecfi ph\u1ecfng v\u1ea5n v\u1ec1 thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng IoT<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><b>L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o h\u1ec7 th\u1ed1ng IoT v\u1eabn v\u1eadn h\u00e0nh khi k\u1ebft n\u1ed1i m\u1ea1ng b\u1ecb gi\u00e1n \u0111o\u1ea1n?<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">\u0110\u1ec3 \u0111\u1ea3m b\u1ea3o h\u1ec7 th\u1ed1ng IoT v\u1eabn ho\u1ea1t \u0111\u1ed9ng khi k\u1ebft n\u1ed1i m\u1ea1ng b\u1ecb gi\u00e1n \u0111o\u1ea1n, c\u00f3 th\u1ec3 \u00e1p d\u1ee5ng c\u00e1c chi\u1ebfn l\u01b0\u1ee3c sau:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>S\u1eed d\u1ee5ng \u0111i\u1ec7n to\u00e1n bi\u00ean (Edge Computing):<\/b><span style=\"font-weight: 400;\"> Tri\u1ec3n khai \u0111i\u1ec7n to\u00e1n bi\u00ean cho ph\u00e9p thi\u1ebft b\u1ecb x\u1eed l\u00fd d\u1eef li\u1ec7u c\u1ee5c b\u1ed9, gi\u1ea3m ph\u1ee5 thu\u1ed9c v\u00e0o k\u1ebft n\u1ed1i m\u1ea1ng v\u00e0 \u0111\u1ea3m b\u1ea3o ho\u1ea1t \u0111\u1ed9ng li\u00ean t\u1ee5c ngay c\u1ea3 khi m\u1ea5t k\u1ebft n\u1ed1i.\u200b<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Thi\u1ebft l\u1eadp h\u1ea1 t\u1ea7ng m\u1ea1ng d\u1ef1 ph\u00f2ng:<\/b><span style=\"font-weight: 400;\"> K\u1ebft h\u1ee3p nhi\u1ec1u lo\u1ea1i m\u1ea1ng nh\u01b0 LTE, Wi-Fi, v\u1ec7 tinh v\u00e0 Ethernet \u0111\u1ec3 t\u1ea1o h\u1ec7 th\u1ed1ng truy\u1ec1n th\u00f4ng linh ho\u1ea1t. N\u1ebfu m\u1ed9t m\u1ea1ng g\u1eb7p s\u1ef1 c\u1ed1, d\u1eef li\u1ec7u c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c chuy\u1ec3n qua m\u1ea1ng kh\u00e1c, duy tr\u00ec k\u1ebft n\u1ed1i \u1ed5n \u0111\u1ecbnh.\u200b<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>\u00c1p d\u1ee5ng n\u1ec1n t\u1ea3ng k\u1ebft n\u1ed1i th\u00f4ng minh: <\/b><span style=\"font-weight: 400;\">S\u1eed d\u1ee5ng n\u1ec1n t\u1ea3ng nh\u01b0 Eseye\u2019s Infinity IoT Platform \u0111\u1ec3 qu\u1ea3n l\u00fd k\u1ebft n\u1ed1i, t\u1ef1 \u0111\u1ed9ng chuy\u1ec3n \u0111\u1ed5i gi\u1eefa c\u00e1c m\u1ea1ng nh\u1eb1m tr\u00e1nh t\u1eafc ngh\u1ebdn v\u00e0 \u0111\u1ea3m b\u1ea3o thi\u1ebft b\u1ecb lu\u00f4n k\u1ebft n\u1ed1i.\u200b<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>T\u0103ng c\u01b0\u1eddng kh\u1ea3 n\u0103ng gi\u00e1m s\u00e1t v\u00e0 ph\u00e1t hi\u1ec7n s\u1ef1 c\u1ed1: <\/b><span style=\"font-weight: 400;\">S\u1eed d\u1ee5ng c\u00e1c c\u00f4ng c\u1ee5 gi\u00e1m s\u00e1t m\u1ea1ng \u0111\u1ec3 ph\u00e1t hi\u1ec7n s\u1edbm s\u1ef1 c\u1ed1 v\u00e0 th\u1ef1c hi\u1ec7n c\u00e1c bi\u1ec7n ph\u00e1p kh\u1eafc ph\u1ee5c k\u1ecbp th\u1eddi, gi\u1ea3m thi\u1ec3u th\u1eddi gian gi\u00e1n \u0111o\u1ea1n.\u200b<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Th\u1ef1c hi\u1ec7n ki\u1ec3m tra v\u00e0 m\u00f4 ph\u1ecfng s\u1ef1 c\u1ed1 m\u1ea1ng:<\/b><span style=\"font-weight: 400;\"> Th\u01b0\u1eddng xuy\u00ean ki\u1ec3m tra v\u00e0 m\u00f4 ph\u1ecfng c\u00e1c t\u00ecnh hu\u1ed1ng m\u1ea5t k\u1ebft n\u1ed1i \u0111\u1ec3 \u0111\u00e1nh gi\u00e1 kh\u1ea3 n\u0103ng ch\u1ecbu l\u1ed7i c\u1ee7a h\u1ec7 th\u1ed1ng v\u00e0 c\u1ea3i thi\u1ec7n \u0111\u1ed9 tin c\u1eady.<\/span><\/li>\n<\/ul>\n<h3><b>B\u1ea1n s\u1ebd t\u00edch h\u1ee3p 5G v\u00e0o h\u1ec7 th\u1ed1ng IoT hi\u1ec7n c\u00f3 nh\u01b0 th\u1ebf n\u00e0o?<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">T\u00f4i th\u01b0\u1eddng t\u00edch h\u1ee3p theo c\u00e1c b\u01b0\u1edbc nh\u01b0 sau:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u0110\u00e1nh gi\u00e1 h\u1ec7 th\u1ed1ng IoT hi\u1ec7n c\u00f3, ki\u1ec3m tra v\u1ec1 y\u00eau c\u1ea7u \u0111\u1ed9 tr\u1ec5 (cao hay th\u1ea5p), s\u1ed1 l\u01b0\u1ee3ng thi\u1ebft b\u1ecb (nhi\u1ec1u hay \u00edt), b\u0103ng th\u00f4ng (t\u1ed1c \u0111\u1ed9 nhanh hay ch\u1eadm).<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">T\u1eadn d\u1ee5ng \u0111\u1ed9 tr\u1ec5 th\u1ea5p v\u00e0 b\u0103ng th\u00f4ng cao c\u1ee7a 5G cho c\u00e1c \u1ee9ng d\u1ee5ng th\u1eddi gian th\u1ef1c.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">S\u1eed d\u1ee5ng ph\u00e2n chia m\u1ea1ng \u0111\u1ec3 \u01b0u ti\u00ean kh\u1ed1i l\u01b0\u1ee3ng c\u00f4ng vi\u1ec7c IoT quan tr\u1ecdng.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">N\u00e2ng c\u1ea5p ph\u1ea7n c\u1ee9ng, t\u1ed1i \u01b0u giao th\u1ee9c t\u01b0\u01a1ng th\u00edch v\u1edbi 5G.<\/span><\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"Cac_cau_hoi_thuc_hanh_lap_trinh_IoT\"><\/span><b>C\u00e1c c\u00e2u h\u1ecfi th\u1ef1c h\u00e0nh l\u1eadp tr\u00ecnh IoT<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><b>M\u00f4 t\u1ea3 c\u00e1ch b\u1ea1n x\u1eed l\u00fd t\u00ecnh tr\u1ea1ng tr\u00e0n d\u1eef li\u1ec7u trong h\u1ec7 th\u1ed1ng IoT c\u00f3 h\u1ea1n ch\u1ebf v\u1ec1 t\u00e0i nguy\u00ean<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">\u0110\u1ec3 x\u1eed l\u00fd t\u00ecnh tr\u1ea1ng tr\u00e0n d\u1eef li\u1ec7u trong h\u1ec7 th\u1ed1ng IoT gi\u1edbi h\u1ea1n t\u00e0i nguy\u00ean, c\u00f3 th\u1ec3 \u00e1p d\u1ee5ng m\u1ed9t s\u1ed1 chi\u1ebfn l\u01b0\u1ee3c sau:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>L\u1ecdc d\u1eef li\u1ec7u kh\u00f4ng c\u1ea7n thi\u1ebft: <\/b><span style=\"font-weight: 400;\">Ch\u1ec9 thu th\u1eadp v\u00e0 g\u1eedi nh\u1eefng d\u1eef li\u1ec7u quan tr\u1ecdng. V\u00ed d\u1ee5, h\u1ec7 th\u1ed1ng ph\u00e1t hi\u1ec7n ch\u00e1y r\u1eebng ch\u1ec9 g\u1eedi d\u1eef li\u1ec7u khi nhi\u1ec7t \u0111\u1ed9 t\u0103ng \u0111\u1ed9t bi\u1ebfn thay v\u00ec truy\u1ec1n li\u00ean t\u1ee5c m\u1ecdi gi\u00e1 tr\u1ecb.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>N\u00e9n d\u1eef li\u1ec7u: <\/b><span style=\"font-weight: 400;\">Gi\u1ea3m k\u00edch th\u01b0\u1edbc d\u1eef li\u1ec7u tr\u01b0\u1edbc khi truy\u1ec1n, gi\u00fap ti\u1ebft ki\u1ec7m b\u0103ng th\u00f4ng v\u00e0 dung l\u01b0\u1ee3ng l\u01b0u tr\u1eef.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>X\u1eed l\u00fd theo l\u00f4 (batch processing): <\/b><span style=\"font-weight: 400;\">Gom d\u1eef li\u1ec7u th\u00e0nh t\u1eebng l\u00f4 nh\u1ecf v\u00e0 g\u1eedi \u0111\u1ecbnh k\u1ef3 thay v\u00ec truy\u1ec1n t\u1ee9c th\u1eddi m\u1ecdi th\u00f4ng tin, tr\u00e1nh l\u00e0m qu\u00e1 t\u1ea3i h\u1ec7 th\u1ed1ng.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>L\u1ea5y m\u1eabu th\u00f4ng minh (Smart Sampling)<\/b><span style=\"font-weight: 400;\">: Ch\u1ec9 thu th\u1eadp d\u1eef li\u1ec7u c\u00f3 thay \u0111\u1ed5i \u0111\u00e1ng k\u1ec3<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>G\u1ed9p d\u1eef li\u1ec7u: <\/b><span style=\"font-weight: 400;\">K\u1ebft h\u1ee3p nhi\u1ec1u k\u1ebft qu\u1ea3 th\u00e0nh 1 g\u00f3i tin tr\u01b0\u1edbc khi g\u1eedi \u0111\u1ec3 gi\u1ea3m s\u1ed1 l\u1ea7n g\u1eedi<\/span><\/li>\n<\/ul>\n<h3><b>Vi\u1ebft truy v\u1ea5n SQL \u0111\u1ec3 l\u1ea5y d\u1eef li\u1ec7u c\u1ea3m bi\u1ebfn t\u1eeb b\u1ea3ng c\u00f3 t\u00ean sensor_data trong \u0111\u00f3 nhi\u1ec7t \u0111\u1ed9 v\u01b0\u1ee3t qu\u00e1 30 \u0111\u1ed9<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">\u0110\u1ec3 truy xu\u1ea5t d\u1eef li\u1ec7u c\u1ea3m bi\u1ebfn t\u1eeb b\u1ea3ng sensor_data v\u1edbi \u0111i\u1ec1u ki\u1ec7n nhi\u1ec7t \u0111\u1ed9 v\u01b0\u1ee3t qu\u00e1 30 \u0111\u1ed9, b\u1ea1n c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng c\u00e2u l\u1ec7nh SQL \u0111\u01a1n gi\u1ea3n sau: <\/span><span style=\"font-weight: 400;\">SELECT * FROM sensor_data WHERE temperature &gt; 30;<\/span><\/p>\n<p><span style=\"font-weight: 400;\">C\u00e2u truy v\u1ea5n n\u00e0y l\u1ea5y t\u1ea5t c\u1ea3 b\u1ea3n ghi m\u00e0 gi\u00e1 tr\u1ecb nhi\u1ec7t \u0111\u1ed9 trong c\u1ed9t temperature l\u1edbn h\u01a1n 30.<\/span><\/p>\n<h3><b>M\u1ed9t thi\u1ebft b\u1ecb trong m\u1ea1ng IoT c\u1ee7a b\u1ea1n \u0111ang g\u1eedi d\u1eef li\u1ec7u tr\u00f9ng l\u1eb7p. B\u1ea1n s\u1ebd gi\u1ea3i quy\u1ebft v\u1ea5n \u0111\u1ec1 n\u00e0y nh\u01b0 th\u1ebf n\u00e0o?<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">\u0110\u1ec3 gi\u1ea3i quy\u1ebft v\u1ea5n \u0111\u1ec1 thi\u1ebft b\u1ecb IoT g\u1eedi d\u1eef li\u1ec7u tr\u00f9ng l\u1eb7p, t\u00f4i th\u1ef1c hi\u1ec7n c\u00e1c b\u01b0\u1edbc sau:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Ki\u1ec3m tra ph\u1ea7n m\u1ec1m c\u01a1 s\u1edf: <\/b><span style=\"font-weight: 400;\">\u0110\u1ea3m b\u1ea3o ph\u1ea7n m\u1ec1m c\u01a1 s\u1edf c\u1ee7a thi\u1ebft b\u1ecb \u0111\u01b0\u1ee3c c\u1eadp nh\u1eadt \u0111\u1ec3 gi\u1ea3i quy\u1ebft c\u00e1c l\u1ed7i g\u00e2y ra vi\u1ec7c truy\u1ec1n d\u1eef li\u1ec7u tr\u00f9ng l\u1eb7p.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Tri\u1ec3n khai logic lo\u1ea1i b\u1ecf tr\u00f9ng l\u1eb7p: <\/b><span style=\"font-weight: 400;\">Th\u00eam logic ph\u00eda m\u00e1y ch\u1ee7 ho\u1eb7c c\u1ed5ng \u0111\u1ec3 l\u1ecdc c\u00e1c tin nh\u1eafn tr\u00f9ng l\u1eb7p d\u1ef1a tr\u00ean ID tin nh\u1eafn duy nh\u1ea5t ho\u1eb7c d\u1ea5u th\u1eddi gian.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>\u0110i\u1ec1u ch\u1ec9nh kho\u1ea3ng th\u1eddi gian b\u00e1o c\u00e1o: <\/b><span style=\"font-weight: 400;\">C\u1ea5u h\u00ecnh l\u1ea1i t\u1ea7n su\u1ea5t b\u00e1o c\u00e1o c\u1ee7a thi\u1ebft b\u1ecb \u0111\u1ec3 tr\u00e1nh ch\u1ed3ng ch\u00e9o d\u1eef li\u1ec7u qu\u00e1 m\u1ee9c.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>X\u00e1c minh \u0111\u1ed9 tr\u1ec5 m\u1ea1ng: <\/b><span style=\"font-weight: 400;\">\u0110\u00e1nh gi\u00e1 m\u1ea1ng \u0111\u1ec3 t\u00ecm \u0111\u1ed9 tr\u1ec5 c\u00f3 th\u1ec3 g\u00e2y ra vi\u1ec7c g\u1eedi l\u1ea1i c\u00e1c tin nh\u1eafn ch\u01b0a \u0111\u01b0\u1ee3c x\u00e1c nh\u1eadn.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Xem l\u1ea1i c\u00e0i \u0111\u1eb7t giao th\u1ee9c: <\/b><span style=\"font-weight: 400;\">\u0110\u1ea3m b\u1ea3o c\u1ea5u h\u00ecnh ch\u00ednh x\u00e1c cho MQTT ho\u1eb7c CoAP, \u0111\u1eb7c bi\u1ec7t li\u00ean quan \u0111\u1ebfn m\u1ee9c ch\u1ea5t l\u01b0\u1ee3ng d\u1ecbch v\u1ee5 (QoS) v\u00e0 c\u00e0i \u0111\u1eb7t truy\u1ec1n l\u1ea1i.<\/span><\/li>\n<\/ul>\n<h3><b>Vi\u1ebft m\u1ed9t t\u1eadp l\u1ec7nh Python \u0111\u01a1n gi\u1ea3n \u0111\u1ec3 \u0111\u1ecdc d\u1eef li\u1ec7u t\u1eeb c\u1ea3m bi\u1ebfn nhi\u1ec7t \u0111\u1ed9 v\u00e0 in ra gi\u00e1 tr\u1ecb<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">\u0110\u1ec3 \u0111\u1ecdc d\u1eef li\u1ec7u t\u1eeb c\u1ea3m bi\u1ebfn nhi\u1ec7t \u0111\u1ed9 b\u1eb1ng Python, c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng th\u01b0 vi\u1ec7n Adafruit_DHT. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 m\u1ed9t t\u1eadp l\u1ec7nh m\u1eabu:<\/span><\/p>\n<pre><span style=\"font-weight: 400;\">import Adafruit_DHT<\/span><\/pre>\n<p><span style=\"font-weight: 400;\"># Ch\u1ecdn lo\u1ea1i c\u1ea3m bi\u1ebfn v\u00e0 ch\u00e2n GPIO k\u1ebft n\u1ed1i<\/span><\/p>\n<pre><span style=\"font-weight: 400;\">sensor = Adafruit_DHT.DHT22<\/span>\r\n<span style=\"font-weight: 400;\">pin = 4 <\/span><span style=\"font-weight: 400;\">\u00a0<\/span><\/pre>\n<p><span style=\"font-weight: 400;\"># V\u00ed d\u1ee5: ch\u00e2n GPIO 4 tr\u00ean Raspberry Pi<\/span><\/p>\n<p><span style=\"font-weight: 400;\"># \u0110\u1ecdc d\u1eef li\u1ec7u nhi\u1ec7t \u0111\u1ed9 v\u00e0 \u0111\u1ed9 \u1ea9m<\/span><\/p>\n<pre><span style=\"font-weight: 400;\">humidity, temperature = Adafruit_DHT.read_retry(sensor, pin)<\/span><\/pre>\n<p><span style=\"font-weight: 400;\"># In gi\u00e1 tr\u1ecb nhi\u1ec7t \u0111\u1ed9 ra m\u00e0n h\u00ecnh<\/span><\/p>\n<pre><span style=\"font-weight: 400;\">if temperature is not None:<\/span>\r\n<span style=\"font-weight: 400;\">print('Temperature: {0:0.1f}\u00b0C'.format(temperature))<\/span>\r\n<span style=\"font-weight: 400;\">else:<\/span>\r\n<span style=\"font-weight: 400;\">print('Failed to retrieve data from sensor')<\/span><\/pre>\n<h3><b>H\u00e3y vi\u1ebft h\u00e0m Python x\u1eed l\u00fd d\u1eef li\u1ec7u \u0111\u1ebfn t\u1eeb nhi\u1ec1u thi\u1ebft b\u1ecb IoT v\u00e0 l\u01b0u tr\u1eef trong c\u01a1 s\u1edf d\u1eef li\u1ec7u<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">\u0110\u1ec3 x\u1eed l\u00fd d\u1eef li\u1ec7u t\u1eeb nhi\u1ec1u thi\u1ebft b\u1ecb IoT v\u00e0 l\u01b0u tr\u1eef v\u00e0o c\u01a1 s\u1edf d\u1eef li\u1ec7u, b\u1ea1n c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng th\u01b0 vi\u1ec7n pymysql c\u1ee7a Python \u0111\u1ec3 k\u1ebft n\u1ed1i c\u01a1 s\u1edf d\u1eef li\u1ec7u.\u00a0<\/span><\/p>\n<pre><span style=\"font-weight: 400;\">import pymysql<\/span>\r\n<span style=\"font-weight: 400;\">def process_and_store_data(data):<\/span><\/pre>\n<p><span style=\"font-weight: 400;\"># K\u1ebft n\u1ed1i \u0111\u1ebfn c\u01a1 s\u1edf d\u1eef li\u1ec7u<\/span><\/p>\n<pre><span style=\"font-weight: 400;\">connection = pymysql.connect(host='localhost', user='user', password='passwd', db='iot_data')<\/span>\r\n<span style=\"font-weight: 400;\">cursor = connection.cursor()<\/span><\/pre>\n<p><span style=\"font-weight: 400;\"># Duy\u1ec7t qua d\u1eef li\u1ec7u c\u1ee7a c\u00e1c thi\u1ebft b\u1ecb v\u00e0 ch\u00e8n v\u00e0o c\u01a1 s\u1edf d\u1eef li\u1ec7u<\/span><\/p>\n<pre><span style=\"font-weight: 400;\">for device_data in data:<\/span>\r\n<span style=\"font-weight: 400;\">sql = 'INSERT INTO sensor_data (device_id, temperature, humidity) VALUES (%s, %s, %s)'<\/span>\r\n<span style=\"font-weight: 400;\">cursor.execute(sql, (device_data['device_id'], device_data['temperature'], device_data['humidity']))<\/span><\/pre>\n<p><span style=\"font-weight: 400;\"># Cam k\u1ebft thay \u0111\u1ed5i v\u00e0 \u0111\u00f3ng k\u1ebft n\u1ed1i<\/span><\/p>\n<pre><span style=\"font-weight: 400;\">connection.commit()<\/span>\r\n<span style=\"font-weight: 400;\">connection.close()<\/span><\/pre>\n<p><span style=\"font-weight: 400;\">H\u00e0m n\u00e0y s\u1ebd x\u1eed l\u00fd d\u1eef li\u1ec7u \u0111\u1ea7u v\u00e0o t\u1eeb c\u00e1c thi\u1ebft b\u1ecb IoT, sau \u0111\u00f3 l\u01b0u tr\u1eef v\u00e0o b\u1ea3ng sensor_data trong c\u01a1 s\u1edf d\u1eef li\u1ec7u MySQL.<\/span><\/p>\n<h3><b>Vi\u1ebft ch\u01b0\u01a1ng tr\u00ecnh Python k\u1ebft n\u1ed1i \u0111\u1ebfn m\u1ed9t broker MQTT v\u00e0 \u0111\u0103ng k\u00fd theo d\u00f5i m\u1ed9t ch\u1ee7 \u0111\u1ec1<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">\u0110\u1ec3 k\u1ebft n\u1ed1i \u0111\u1ebfn broker MQTT v\u00e0 \u0111\u0103ng k\u00fd theo d\u00f5i m\u1ed9t ch\u1ee7 \u0111\u1ec1 b\u1eb1ng Python, b\u1ea1n c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng th\u01b0 vi\u1ec7n paho-mqtt.\u00a0<\/span><\/p>\n<pre><span style=\"font-weight: 400;\">import paho.mqtt.client as mqtt<\/span>\r\n<span style=\"font-weight: 400;\">def on_connect(client, userdata, flags, rc):<\/span>\r\n<span style=\"font-weight: 400;\">print('\u0110\u00e3 k\u1ebft n\u1ed1i v\u1edbi m\u00e3 k\u1ebft qu\u1ea3 ' + str(rc))<\/span>\r\n<span style=\"font-weight: 400;\">client.subscribe('test\/topic')<\/span>\r\n<span style=\"font-weight: 400;\">def on_message(client, userdata, msg):<\/span>\r\n<span style=\"font-weight: 400;\">print(msg.topic + ' ' + str(msg.payload))<\/span>\r\n<span style=\"font-weight: 400;\">client = mqtt.Client()<\/span>\r\n<span style=\"font-weight: 400;\">client.on_connect = on_connect<\/span>\r\n<span style=\"font-weight: 400;\">client.on_message = on_message<\/span>\r\n<span style=\"font-weight: 400;\">client.connect('mqtt.example.com', 1883, 60)<\/span>\r\n<span style=\"font-weight: 400;\">client.loop_forever()<\/span><\/pre>\n<h3><b>Vi\u1ebft m\u1ed9t h\u00e0m b\u1eb1ng JavaScript \u0111\u1ec3 m\u00f4 ph\u1ecfng vi\u1ec7c g\u1eedi d\u1eef li\u1ec7u t\u1eeb thi\u1ebft b\u1ecb IoT \u0111\u1ebfn m\u00e1y ch\u1ee7 b\u1eb1ng HTTP POST<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">H\u00e0m m\u00f4 ph\u1ecfng g\u1eedi d\u1eef li\u1ec7u t\u1eeb thi\u1ebft b\u1ecb IoT \u0111\u1ebfn m\u00e1y ch\u1ee7 b\u1eb1ng HTTP POST trong JavaScript:<\/span><\/p>\n<pre><span style=\"font-weight: 400;\">function sendIoTData(data) {<\/span>\r\n<span style=\"font-weight: 400;\">fetch('https:\/\/example.com\/api', {<\/span>\r\n<span style=\"font-weight: 400;\">method: 'POST',<\/span>\r\n<span style=\"font-weight: 400;\">headers: {<\/span>\r\n<span style=\"font-weight: 400;\">'Content-Type': 'application\/json'<\/span>\r\n<span style=\"font-weight: 400;\">},<\/span>\r\n<span style=\"font-weight: 400;\">body: JSON.stringify(data)<\/span>\r\n<span style=\"font-weight: 400;\">})<\/span>\r\n<span style=\"font-weight: 400;\">.then(response =&gt; response.json())<\/span>\r\n<span style=\"font-weight: 400;\">.then(result =&gt; {<\/span>\r\n<span style=\"font-weight: 400;\">console.log('D\u1eef li\u1ec7u g\u1eedi th\u00e0nh c\u00f4ng:', result);<\/span>\r\n<span style=\"font-weight: 400;\">})<\/span>\r\n<span style=\"font-weight: 400;\">.catch(error =&gt; {<\/span>\r\n<span style=\"font-weight: 400;\">console.error('L\u1ed7i khi g\u1eedi d\u1eef li\u1ec7u:', error);<\/span>\r\n<span style=\"font-weight: 400;\">});<\/span>\r\n<span style=\"font-weight: 400;\">}<\/span><\/pre>\n<h3><b>S\u1eed d\u1ee5ng th\u01b0 vi\u1ec7n on-off, vi\u1ebft h\u00e0m JavaScript \u0111\u1ec3 b\u1eadt\/t\u1eaft \u0111\u00e8n LED \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i v\u1edbi ch\u00e2n GPIO tr\u00ean Raspberry Pi<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">D\u01b0\u1edbi \u0111\u00e2y l\u00e0 c\u00e1ch vi\u1ebft h\u00e0m JavaScript s\u1eed d\u1ee5ng th\u01b0 vi\u1ec7n onoff \u0111\u1ec3 b\u1eadt\/t\u1eaft \u0111\u00e8n LED \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i v\u1edbi ch\u00e2n GPIO tr\u00ean Raspberry Pi.<\/span><\/p>\n<pre><span style=\"font-weight: 400;\">const Gpio = require('onoff').Gpio; \/\/ Import th\u01b0 vi\u1ec7n onoff<\/span>\r\n<span style=\"font-weight: 400;\">const led = new Gpio(17, 'out'); \/\/ Kh\u1edfi t\u1ea1o \u0111\u00e8n LED \u1edf ch\u00e2n GPIO 17 v\u1edbi ch\u1ebf \u0111\u1ed9 xu\u1ea5t<\/span>\r\n<span style=\"font-weight: 400;\">function toggleLED() {<\/span><\/pre>\n<p><span style=\"font-weight: 400;\">\/\/ \u0110\u1ecdc tr\u1ea1ng th\u00e1i hi\u1ec7n t\u1ea1i v\u00e0 \u0111\u1ea3o bit \u0111\u1ec3 b\u1eadt\/t\u1eaft \u0111\u00e8n<\/span><\/p>\n<pre><span style=\"font-weight: 400;\">led.writeSync(led.readSync() ^ 1);<\/span>\r\n<span style=\"font-weight: 400;\">}<\/span><\/pre>\n<p><span style=\"font-weight: 400;\">\/\/ L\u1eb7p l\u1ea1i thao t\u00e1c b\u1eadt\/t\u1eaft m\u1ed7i gi\u00e2y<\/span><\/p>\n<pre><span style=\"font-weight: 400;\">setInterval(toggleLED, 1000);<\/span><\/pre>\n<p><span style=\"font-weight: 400;\">Trong \u0111\u00f3:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">led.readSync() \u0111\u1ecdc tr\u1ea1ng th\u00e1i hi\u1ec7n t\u1ea1i (0 ho\u1eb7c 1)<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">^ 1 l\u00e0 ph\u00e9p XOR, d\u00f9ng \u0111\u1ec3 \u0111\u1ea3o tr\u1ea1ng th\u00e1i (0 th\u00e0nh 1, 1 th\u00e0nh 0)<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">writeSync() ghi tr\u1ea1ng th\u00e1i m\u1edbi xu\u1ed1ng ch\u00e2n GPIO<\/span><\/li>\n<\/ul>\n<h3><b>B\u1ea1n s\u1ebd thi\u1ebft k\u1ebf m\u1ed9t ki\u1ebfn tr\u00fac IoT c\u00f3 th\u1ec3 m\u1edf r\u1ed9ng cho m\u1ea1ng l\u01b0\u1edbi thi\u1ebft b\u1ecb l\u1edbn nh\u01b0 th\u1ebf n\u00e0o?<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">\u0110\u1ec3 x\u1eed l\u00fd l\u01b0\u1ee3ng d\u1eef li\u1ec7u l\u1edbn trong h\u1ec7 th\u1ed1ng IoT, nh\u01b0 \u1edf th\u00e0nh ph\u1ed1 hay nh\u00e0 m\u00e1y, c\u00f3 th\u1ec3 d\u00f9ng \u0111i\u1ec7n to\u00e1n bi\u00ean. C\u00e1c thi\u1ebft b\u1ecb x\u1eed l\u00fd m\u1ed9t ph\u1ea7n d\u1eef li\u1ec7u tr\u01b0\u1edbc khi g\u1eedi l\u00ean, ch\u1ec9 truy\u1ec1n d\u1eef li\u1ec7u quan tr\u1ecdng t\u1edbi m\u00e1y ch\u1ee7 trung t\u00e2m \u0111\u1ec3 tr\u00e1nh qu\u00e1 t\u1ea3i. H\u1ec7 th\u1ed1ng c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c chia th\u00e0nh c\u00e1c c\u1ee5m thi\u1ebft b\u1ecb, m\u1ed7i c\u1ee5m k\u1ebft n\u1ed1i v\u1edbi m\u00e1y ch\u1ee7 c\u1ee5c b\u1ed9. \u0110i\u1ec1u n\u00e0y gi\u00fap gi\u1ea3m t\u1ea3i cho h\u1ec7 th\u1ed1ng v\u00e0 c\u00e2n b\u1eb1ng t\u00e0i nguy\u00ean khi th\u00eam thi\u1ebft b\u1ecb m\u1edbi.<\/span><\/p>\n<h3><b>B\u1ea1n s\u1ebd thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng IoT cho m\u1ed9t kho th\u01b0\u01a1ng m\u1ea1i \u0111i\u1ec7n t\u1eed c\u00f3 kh\u1ed1i l\u01b0\u1ee3ng l\u1edbn nh\u01b0 th\u1ebf n\u00e0o?<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">\u0110\u1ec3 thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng IoT cho kho h\u00e0ng th\u01b0\u01a1ng m\u1ea1i \u0111i\u1ec7n t\u1eed quy m\u00f4 l\u1edbn, c\u1ea7n m\u1ed9t gi\u1ea3i ph\u00e1p to\u00e0n di\u1ec7n bao g\u1ed3m:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>C\u1ea3m bi\u1ebfn v\u00e0 th\u1ebb RFID:<\/b><span style=\"font-weight: 400;\"> Theo d\u00f5i h\u00e0ng h\u00f3a t\u1ef1 \u0111\u1ed9ng, gi\u1ea3m sai s\u00f3t.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>\u0110i\u1ec7n to\u00e1n bi\u00ean: <\/b><span style=\"font-weight: 400;\">X\u1eed l\u00fd d\u1eef li\u1ec7u t\u1ea1i ch\u1ed7, gi\u1ea3m \u0111\u1ed9 tr\u1ec5.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>K\u1ebft n\u1ed1i v\u00e0 giao th\u1ee9c: <\/b><span style=\"font-weight: 400;\">S\u1eed d\u1ee5ng LoRaWAN cho k\u1ebft n\u1ed1i xa, Wi-Fi cho khu v\u1ef1c c\u00f3 m\u1eadt \u0111\u1ed9 cao.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>T\u00edch h\u1ee3p \u0111\u00e1m m\u00e2y: <\/b><span style=\"font-weight: 400;\">Ph\u00e2n t\u00edch d\u1eef li\u1ec7u v\u00e0 duy tr\u00ec b\u1ea3o tr\u00ec thi\u1ebft b\u1ecb.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>T\u1ef1 \u0111\u1ed9ng h\u00f3a:<\/b><span style=\"font-weight: 400;\"> S\u1eed d\u1ee5ng r\u00f4-b\u1ed1t v\u00e0 b\u1ed9 truy\u1ec1n \u0111\u1ed9ng cho c\u00e1c t\u00e1c v\u1ee5 nh\u01b0 ph\u00e2n lo\u1ea1i v\u00e0 \u0111\u00f3ng g\u00f3i.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>B\u1ea3o m\u1eadt: <\/b><span style=\"font-weight: 400;\">M\u00e3 h\u00f3a, c\u01a1 ch\u1ebf kh\u1edfi \u0111\u1ed9ng an to\u00e0n, v\u00e0 c\u1eadp nh\u1eadt firmware.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng: <\/b><span style=\"font-weight: 400;\">Thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng linh ho\u1ea1t v\u1edbi c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng \u0111\u00e1m m\u00e2y.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">H\u1ec7 th\u1ed1ng n\u00e0y \u0111\u1ea3m b\u1ea3o v\u1eadn h\u00e0nh hi\u1ec7u qu\u1ea3 v\u00e0 b\u1ea3o m\u1eadt cho kho h\u00e0ng, \u0111\u1ed3ng th\u1eddi d\u1ec5 d\u00e0ng m\u1edf r\u1ed9ng trong t\u01b0\u01a1ng lai.<\/span><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Tong_ket\"><\/span><b>T\u1ed5ng k\u1ebft<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span style=\"font-weight: 400;\">\u0110\u1ec3 chinh ph\u1ee5c th\u00e0nh c\u00f4ng c\u00e1c c\u00e2u h\u1ecfi ph\u1ecfng v\u1ea5n IoT, h\u00e3y chu\u1ea9n b\u1ecb k\u1ef9 c\u00e1c kh\u00e1i ni\u1ec7m v\u1ec1 giao th\u1ee9c truy\u1ec1n th\u00f4ng, c\u00e1c bi\u1ec7n ph\u00e1p b\u1ea3o m\u1eadt thi\u1ebft b\u1ecb, ki\u1ebfn tr\u00fac h\u1ec7 th\u1ed1ng IoT, c\u0169ng nh\u01b0 c\u00e1ch \u1ee9ng d\u1ee5ng c\u00f4ng ngh\u1ec7 v\u00e0o c\u00e1c b\u00e0i to\u00e1n trong \u0111\u1eddi s\u1ed1ng. \u0110\u1eb7c bi\u1ec7t, \u0111\u1eebng qu\u00ean nh\u1ea5n m\u1ea1nh v\u00e0o nh\u1eefng tr\u1ea3i nghi\u1ec7m th\u1ef1c ti\u1ec5n, \u0111\u00f3 l\u00e0 y\u1ebfu t\u1ed1 gi\u00fap b\u1ea1n n\u1ed5i b\u1eadt h\u01a1n c\u00e1c \u1ee9ng vi\u00ean kh\u00e1c. Hy v\u1ecdng danh s\u00e1ch h\u01a1n 30 c\u00e2u h\u1ecfi trong b\u00e0i vi\u1ebft n\u00e0y s\u1ebd l\u00e0 b\u01b0\u1edbc \u0111\u1ec7m gi\u00fap b\u1ea1n t\u1ef1 tin chinh ph\u1ee5c nh\u00e0 tuy\u1ec3n d\u1ee5ng nh\u00e9!<\/span><\/p>\n<blockquote><p><em>\u0110\u1ecdc th\u00eam: <a href=\"https:\/\/itviec.com\/blog\/ngon-ngu-va-nen-tang-ho-tro-lap-trinh-iot\/\" target=\"_blank\" rel=\"noopener\"><strong>Top 20+ ng\u00f4n ng\u1eef v\u00e0 n\u1ec1n t\u1ea3ng h\u1ed7 tr\u1ee3 l\u1eadp tr\u00ecnh IoT c\u1ea7n bi\u1ebft<\/strong><\/a><\/em><\/p><\/blockquote>\n","protected":false},"excerpt":{"rendered":"<p>\u0110\u1ec3 v\u01b0\u1ee3t qua v\u00f2ng ph\u1ecfng v\u1ea5n cho v\u1ecb tr\u00ed IoT Developer, b\u1ea1n kh\u00f4ng ch\u1ec9 c\u1ea7n n\u1eafm v\u1eefng ki\u1ebfn th\u1ee9c l\u00fd thuy\u1ebft m\u00e0 c\u00f2n ph\u1ea3i th\u1ec3 hi\u1ec7n \u0111\u01b0\u1ee3c t\u01b0 duy h\u1ec7 th\u1ed1ng v\u00e0 kh\u1ea3 n\u0103ng tri\u1ec3n khai th\u1ef1c t\u1ebf. N\u1ebfu b\u1ea1n \u0111ang chu\u1ea9n b\u1ecb cho m\u1ed9t bu\u1ed5i ph\u1ecfng v\u1ea5n v\u1ec1 IoT, \u0111\u1eebng b\u1ecf qua b\u00e0i vi\u1ebft [&hellip;]<\/p>\n","protected":false},"author":213,"featured_media":87011,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_gspb_post_css":"","footnotes":""},"categories":[109,105],"tags":[],"class_list":["post-86984","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-chuyen-mon-it","category-phong-van-it"],"blocksy_meta":[],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v26.8 (Yoast SEO v27.7) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Top 30+ c\u00e2u h\u1ecfi ph\u1ecfng v\u1ea5n IoT Developer l\u00fd thuy\u1ebft v\u00e0 th\u1ef1c h\u00e0nh - ITviec Blog<\/title>\n<meta name=\"description\" content=\"H\u01b0\u1edbng d\u1eabn tr\u1ea3 l\u1eddi 30+ c\u00e2u h\u1ecfi ph\u1ecfng v\u1ea5n IoT Developer ph\u1ed5 bi\u1ebfn t\u1eeb l\u00fd thuy\u1ebft, ph\u1ea7n c\u1ee9ng, b\u1ea3o m\u1eadt \u0111\u1ebfn th\u1ef1c h\u00e0nh l\u1eadp tr\u00ecnh v\u00e0 thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/itviec.com\/blog\/cau-hoi-phong-van-iot\/\" \/>\n<meta property=\"og:locale\" content=\"vi_VN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Top 30+ c\u00e2u h\u1ecfi ph\u1ecfng v\u1ea5n IoT Developer l\u00fd thuy\u1ebft v\u00e0 th\u1ef1c h\u00e0nh\" \/>\n<meta property=\"og:description\" content=\"\u0110\u1ec3 v\u01b0\u1ee3t qua v\u00f2ng ph\u1ecfng v\u1ea5n cho v\u1ecb tr\u00ed IoT Developer, b\u1ea1n kh\u00f4ng ch\u1ec9 c\u1ea7n n\u1eafm v\u1eefng ki\u1ebfn th\u1ee9c l\u00fd thuy\u1ebft m\u00e0 c\u00f2n ph\u1ea3i th\u1ec3 hi\u1ec7n \u0111\u01b0\u1ee3c t\u01b0 duy h\u1ec7 th\u1ed1ng v\u00e0 kh\u1ea3 n\u0103ng\" \/>\n<meta property=\"og:url\" content=\"https:\/\/itviec.com\/blog\/cau-hoi-phong-van-iot\/\" \/>\n<meta property=\"og:site_name\" content=\"ITviec Blog\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/ITviec\" \/>\n<meta property=\"article:published_time\" content=\"2025-05-16T10:24:17+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/itviec.com\/blog\/wp-content\/uploads\/2025\/05\/cau-hoi-phong-van-iot-vippro-scaled.png\" \/>\n\t<meta property=\"og:image:width\" content=\"640\" \/>\n\t<meta property=\"og:image:height\" content=\"337\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"author\" content=\"Linh Trao\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@ITviec\" \/>\n<meta name=\"twitter:site\" content=\"@ITviec\" \/>\n<meta name=\"twitter:label1\" content=\"\u0110\u01b0\u1ee3c vi\u1ebft b\u1edfi\" \/>\n\t<meta name=\"twitter:data1\" content=\"Linh Trao\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u01af\u1edbc t\u00ednh th\u1eddi gian \u0111\u1ecdc\" \/>\n\t<meta name=\"twitter:data2\" content=\"28 ph\u00fat\" \/>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"Top 30+ c\u00e2u h\u1ecfi ph\u1ecfng v\u1ea5n IoT Developer l\u00fd thuy\u1ebft v\u00e0 th\u1ef1c h\u00e0nh - 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