{"id":36481,"date":"2025-11-07T08:14:22","date_gmt":"2025-11-07T08:14:22","guid":{"rendered":"https:\/\/onlineexammaker.com\/kb\/?p=36481"},"modified":"2025-12-09T17:59:28","modified_gmt":"2025-12-09T17:59:28","slug":"15-firewall-quiz-questions-and-answers-12","status":"publish","type":"post","link":"https:\/\/onlineexammaker.com\/kb\/vi\/15-firewall-quiz-questions-and-answers-12\/","title":{"rendered":"2026 | 15 c\u00e2u h\u1ecfi v\u00e0 c\u00e2u tr\u1ea3 l\u1eddi cho b\u00e0i ki\u1ec3m tra t\u01b0\u1eddng l\u1eeda"},"content":{"rendered":"<p> 1. T\u01b0\u1eddng l\u1eeda l\u00e0 g\u00ec?<br \/>\nT\u01b0\u1eddng l\u1eeda (Firewall) l\u00e0 m\u1ed9t h\u1ec7 th\u1ed1ng an ninh m\u1ea1ng thi\u1ebft y\u1ebfu, \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 gi\u00e1m s\u00e1t v\u00e0 ki\u1ec3m so\u00e1t l\u01b0u l\u01b0\u1ee3ng m\u1ea1ng ra v\u00e0o d\u1ef1a tr\u00ean c\u00e1c quy t\u1eafc an ninh \u0111\u00e3 \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh tr\u01b0\u1edbc. M\u1ee5c ti\u00eau ch\u00ednh c\u1ee7a t\u01b0\u1eddng l\u1eeda l\u00e0 b\u1ea3o v\u1ec7 c\u00e1c h\u1ec7 th\u1ed1ng m\u1ea1ng kh\u1ecfi c\u00e1c m\u1ed1i \u0111e d\u1ecda t\u1eeb b\u00ean ngo\u00e0i nh\u01b0 hacker, virus, v\u00e0 ph\u1ea7n m\u1ec1m \u0111\u1ed9c h\u1ea1i.<\/p>\n<p> 2. Ch\u1ee9c n\u0103ng c\u1ee7a t\u01b0\u1eddng l\u1eeda<br \/>\nKi\u1ec3m so\u00e1t l\u01b0u l\u01b0\u1ee3ng m\u1ea1ng: T\u01b0\u1eddng l\u1eeda l\u1ecdc c\u00e1c g\u00f3i d\u1eef li\u1ec7u ra v\u00e0o m\u1ea1ng d\u1ef1a tr\u00ean c\u00e1c quy t\u1eafc an ninh. Ch\u1ec9 cho ph\u00e9p c\u00e1c k\u1ebft n\u1ed1i h\u1ee3p l\u1ec7 v\u00e0 ng\u0103n ch\u1eb7n c\u00e1c k\u1ebft n\u1ed1i kh\u00f4ng \u0111\u01b0\u1ee3c ph\u00e9p.<br \/>\nB\u1ea3o v\u1ec7 ch\u1ed1ng l\u1ea1i c\u00e1c m\u1ed1i \u0111e d\u1ecda: T\u01b0\u1eddng l\u1eeda ng\u0103n ch\u1eb7n c\u00e1c t\u1ea5n c\u00f4ng t\u1eeb b\u00ean ngo\u00e0i v\u00e0 gi\u00fap b\u1ea3o v\u1ec7 h\u1ec7 th\u1ed1ng kh\u1ecfi c\u00e1c ph\u1ea7n m\u1ec1m \u0111\u1ed9c h\u1ea1i v\u00e0 hacker.<br \/>\nQu\u1ea3n l\u00fd truy c\u1eadp: T\u01b0\u1eddng l\u1eeda c\u00f3 th\u1ec3 ki\u1ec3m so\u00e1t v\u00e0 qu\u1ea3n l\u00fd truy c\u1eadp c\u1ee7a ng\u01b0\u1eddi d\u00f9ng v\u00e0o c\u00e1c t\u00e0i nguy\u00ean m\u1ea1ng, \u0111\u1ea3m b\u1ea3o ch\u1ec9 nh\u1eefng ng\u01b0\u1eddi d\u00f9ng \u0111\u01b0\u1ee3c \u1ee7y quy\u1ec1n m\u1edbi c\u00f3 th\u1ec3 truy c\u1eadp.<\/p>\n<p> 3. C\u00e1c lo\u1ea1i t\u01b0\u1eddng l\u1eeda<br \/>\nT\u01b0\u1eddng l\u1eeda ph\u1ea7n c\u1ee9ng: L\u00e0 thi\u1ebft b\u1ecb v\u1eadt l\u00fd \u0111\u01b0\u1ee3c c\u00e0i \u0111\u1eb7t gi\u1eefa m\u1ea1ng n\u1ed9i b\u1ed9 v\u00e0 m\u1ea1ng ngo\u00e0i (Internet). Th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c t\u1ed5 ch\u1ee9c l\u1edbn.<br \/>\nT\u01b0\u1eddng l\u1eeda ph\u1ea7n m\u1ec1m: L\u00e0 ph\u1ea7n m\u1ec1m \u0111\u01b0\u1ee3c c\u00e0i \u0111\u1eb7t tr\u00ean m\u00e1y t\u00ednh c\u00e1 nh\u00e2n ho\u1eb7c m\u00e1y ch\u1ee7, ch\u1ee7 y\u1ebfu d\u00e0nh cho ng\u01b0\u1eddi d\u00f9ng c\u00e1 nh\u00e2n ho\u1eb7c c\u00e1c doanh nghi\u1ec7p nh\u1ecf.<br \/>\nT\u01b0\u1eddng l\u1eeda th\u1ebf h\u1ec7 m\u1edbi (NGFW): K\u1ebft h\u1ee3p c\u00e1c t\u00ednh n\u0103ng truy\u1ec1n th\u1ed1ng v\u1edbi c\u00e1c ch\u1ee9c n\u0103ng b\u1ed5 sung nh\u01b0 ki\u1ec3m tra g\u00f3i tin s\u00e2u (DPI), ng\u0103n ch\u1eb7n x\u00e2m nh\u1eadp (IPS), v\u00e0 ki\u1ec3m so\u00e1t \u1ee9ng d\u1ee5ng.<\/p>\n<p> 4. C\u00e1ch ho\u1ea1t \u0111\u1ed9ng c\u1ee7a t\u01b0\u1eddng l\u1eeda<br \/>\nT\u01b0\u1eddng l\u1eeda ho\u1ea1t \u0111\u1ed9ng d\u1ef1a tr\u00ean c\u00e1c quy t\u1eafc \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh tr\u01b0\u1edbc \u0111\u1ec3 l\u1ecdc l\u01b0u l\u01b0\u1ee3ng m\u1ea1ng. C\u00e1c quy t\u1eafc n\u00e0y c\u00f3 th\u1ec3 d\u1ef1a tr\u00ean:<br \/>\n\u0110\u1ecba ch\u1ec9 IP: Cho ph\u00e9p ho\u1eb7c ch\u1eb7n c\u00e1c g\u00f3i d\u1eef li\u1ec7u d\u1ef1a tr\u00ean \u0111\u1ecba ch\u1ec9 IP ngu\u1ed3n v\u00e0 \u0111\u00edch.<br \/>\nC\u1ed5ng: Quy \u0111\u1ecbnh c\u00e1c c\u1ed5ng n\u00e0o \u0111\u01b0\u1ee3c ph\u00e9p ho\u1eb7c b\u1ecb ch\u1eb7n.<br \/>\nGiao th\u1ee9c: Cho ph\u00e9p ho\u1eb7c ch\u1eb7n c\u00e1c giao th\u1ee9c m\u1ea1ng c\u1ee5 th\u1ec3 (nh\u01b0 HTTP, FTP, v.v.).<\/p>\n<p> 5. L\u1ee3i \u00edch c\u1ee7a vi\u1ec7c s\u1eed d\u1ee5ng t\u01b0\u1eddng l\u1eeda<br \/>\nT\u0103ng c\u01b0\u1eddng an ninh m\u1ea1ng: B\u1ea3o v\u1ec7 h\u1ec7 th\u1ed1ng kh\u1ecfi c\u00e1c m\u1ed1i \u0111e d\u1ecda t\u1eeb b\u00ean ngo\u00e0i.<br \/>\nB\u1ea3o v\u1ec7 d\u1eef li\u1ec7u: Ng\u0103n ch\u1eb7n truy c\u1eadp tr\u00e1i ph\u00e9p v\u00e0o d\u1eef li\u1ec7u quan tr\u1ecdng.<br \/>\nDuy tr\u00ec hi\u1ec7u su\u1ea5t m\u1ea1ng: Qu\u1ea3n l\u00fd v\u00e0 ki\u1ec3m so\u00e1t l\u01b0u l\u01b0\u1ee3ng m\u1ea1ng, gi\u00fap m\u1ea1ng ho\u1ea1t \u0111\u1ed9ng hi\u1ec7u qu\u1ea3 h\u01a1n.<\/p>\n<p> 6. Th\u00e1ch th\u1ee9c v\u00e0 h\u1ea1n ch\u1ebf c\u1ee7a t\u01b0\u1eddng l\u1eeda<br \/>\nThi\u1ebft l\u1eadp v\u00e0 qu\u1ea3n l\u00fd: Y\u00eau c\u1ea7u ki\u1ebfn th\u1ee9c chuy\u00ean s\u00e2u \u0111\u1ec3 thi\u1ebft l\u1eadp v\u00e0 qu\u1ea3n l\u00fd hi\u1ec7u qu\u1ea3.<br \/>\nChi ph\u00ed: Chi ph\u00ed tri\u1ec3n khai v\u00e0 duy tr\u00ec t\u01b0\u1eddng l\u1eeda c\u00f3 th\u1ec3 cao, \u0111\u1eb7c bi\u1ec7t l\u00e0 \u0111\u1ed1i v\u1edbi t\u01b0\u1eddng l\u1eeda ph\u1ea7n c\u1ee9ng v\u00e0 t\u01b0\u1eddng l\u1eeda th\u1ebf h\u1ec7 m\u1edbi.<br \/>\nGi\u1edbi h\u1ea1n b\u1ea3o v\u1ec7: T\u01b0\u1eddng l\u1eeda kh\u00f4ng th\u1ec3 b\u1ea3o v\u1ec7 ho\u00e0n to\u00e0n kh\u1ecfi t\u1ea5t c\u1ea3 c\u00e1c lo\u1ea1i t\u1ea5n c\u00f4ng, \u0111\u1eb7c bi\u1ec7t l\u00e0 c\u00e1c t\u1ea5n c\u00f4ng t\u1eeb b\u00ean trong m\u1ea1ng.<\/p>\n<p> 7. K\u1ebft lu\u1eadn<br \/>\nT\u01b0\u1eddng l\u1eeda l\u00e0 m\u1ed9t th\u00e0nh ph\u1ea7n kh\u00f4ng th\u1ec3 thi\u1ebfu trong b\u1ea5t k\u1ef3 h\u1ec7 th\u1ed1ng an ninh m\u1ea1ng n\u00e0o. N\u00f3 gi\u00fap b\u1ea3o v\u1ec7 h\u1ec7 th\u1ed1ng kh\u1ecfi c\u00e1c m\u1ed1i \u0111e d\u1ecda t\u1eeb b\u00ean ngo\u00e0i, qu\u1ea3n l\u00fd truy c\u1eadp v\u00e0 duy tr\u00ec hi\u1ec7u su\u1ea5t m\u1ea1ng. Tuy nhi\u00ean, \u0111\u1ec3 t\u01b0\u1eddng l\u1eeda ho\u1ea1t \u0111\u1ed9ng hi\u1ec7u qu\u1ea3, c\u1ea7n ph\u1ea3i c\u00f3 ki\u1ebfn th\u1ee9c v\u00e0 k\u1ef9 n\u0103ng \u0111\u1ec3 thi\u1ebft l\u1eadp v\u00e0 qu\u1ea3n l\u00fd ch\u00fang \u0111\u00fang c\u00e1ch.<\/p>\n<div class=\"refer_box\">\n<p class=\"refer_box_title\"> Ch\u1ec9 \u0111\u1ec3 b\u1ea1n bi\u1ebft<\/p>\n<p class=\"refer_box_text\"> V\u1edbi <a href=\"https:\/\/onlineexammaker.com?refer=blog_refer\">ph\u1ea7n m\u1ec1m tr\u1eafc nghi\u1ec7m OnlineExamMaker<\/a> , b\u1ea5t k\u1ef3 ai c\u0169ng c\u00f3 th\u1ec3 t\u1ea1o v\u00e0 chia s\u1ebb c\u00e1c b\u00e0i \u0111\u00e1nh gi\u00e1 tr\u1ef1c tuy\u1ebfn chuy\u00ean nghi\u1ec7p m\u1ed9t c\u00e1ch d\u1ec5 d\u00e0ng.<\/p>\n<\/div>\n<h4> Trong b\u00e0i vi\u1ebft n\u00e0y<\/h4>\n<ul class=\"article_list\">\n<li><a href=\"#a\">Ph\u1ea7n 1: Ph\u1ea7n m\u1ec1m l\u00e0m b\u00e0i ki\u1ec3m tra AI t\u1ed1t nh\u1ea5t \u0111\u1ec3 t\u1ea1o b\u00e0i ki\u1ec3m tra t\u01b0\u1eddng l\u1eeda<\/a><\/li>\n<li><a href=\"#1\">Ph\u1ea7n 2: 15 c\u00e2u h\u1ecfi tr\u1eafc nghi\u1ec7m v\u1ec1 t\u01b0\u1eddng l\u1eeda<\/a><\/li>\n<li> <a href=\"#2\">Ph\u1ea7n 3: Tr\u00ecnh t\u1ea1o c\u00e2u h\u1ecfi AI OnlineExamMaker: T\u1ea1o c\u00e2u h\u1ecfi cho b\u1ea5t k\u1ef3 ch\u1ee7 \u0111\u1ec1 n\u00e0o<\/a><\/li>\n<\/ul>\n<p><img decoding=\"async\" src=\"https:\/\/onlineexammaker.com\/kb\/wp-content\/uploads\/2023\/08\/firewall.webp\" alt=\"\" \/><\/p>\n<h3 id=\"a\">Ph\u1ea7n 1: Ph\u1ea7n m\u1ec1m l\u00e0m b\u00e0i ki\u1ec3m tra AI t\u1ed1t nh\u1ea5t \u0111\u1ec3 t\u1ea1o b\u00e0i ki\u1ec3m tra t\u01b0\u1eddng l\u1eeda <\/h3>\n<p>OnlineExammaker l\u00e0 m\u1ed9t n\u1ec1n t\u1ea3ng \u0111\u00e1nh gi\u00e1 h\u1ed7 tr\u1ee3 AI m\u1ea1nh m\u1ebd \u0111\u1ec3 t\u1ea1o ra c\u00e1c \u0111\u00e1nh gi\u00e1 ki\u1ebfn \u200b\u200bth\u1ee9c t\u01b0\u1eddng l\u1eeda t\u1ef1 \u0111\u1ed9ng. N\u00f3 \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf cho c\u00e1c nh\u00e0 gi\u00e1o d\u1ee5c, gi\u1ea3ng vi\u00ean, doanh nghi\u1ec7p v\u00e0 b\u1ea5t c\u1ee9 ai mu\u1ed1n t\u1ea1o ra c\u00e1c c\u00e2u \u0111\u1ed1 h\u1ea5p d\u1eabn m\u00e0 kh\u00f4ng d\u00e0nh h\u00e0ng gi\u1edd \u0111\u1ec3 ch\u1ebf t\u1ea1o c\u00e1c c\u00e2u h\u1ecfi theo c\u00e1ch th\u1ee7 c\u00f4ng. T\u00ednh n\u0103ng Tr\u00ecnh t\u1ea1o c\u00e2u h\u1ecfi AI cho ph\u00e9p b\u1ea1n nh\u1eadp m\u1ed9t ch\u1ee7 \u0111\u1ec1 ho\u1eb7c chi ti\u1ebft c\u1ee5 th\u1ec3 v\u00e0 n\u00f3 t\u1ef1 \u0111\u1ed9ng t\u1ea1o ra nhi\u1ec1u lo\u1ea1i c\u00e2u h\u1ecfi.<\/p>\n<p><strong> C\u00e1c t\u00ednh n\u0103ng h\u00e0ng \u0111\u1ea7u \u0111\u1ec3 t\u1ed5 ch\u1ee9c \u0111\u00e1nh gi\u00e1: <\/strong><br \/>\n\u25cf K\u1ebft h\u1ee3p gi\u00e1m s\u00e1t webcam AI \u0111\u1ec3 n\u1eafm b\u1eaft c\u00e1c ho\u1ea1t \u0111\u1ed9ng gian l\u1eadn trong k\u1ef3 thi tr\u1ef1c tuy\u1ebfn.<br \/>\n\u25cf T\u0103ng c\u01b0\u1eddng \u0111\u00e1nh gi\u00e1 v\u1edbi tr\u1ea3i nghi\u1ec7m t\u01b0\u01a1ng t\u00e1c b\u1eb1ng c\u00e1ch nh\u00fang video, \u00e2m thanh, h\u00ecnh \u1ea3nh v\u00e0o c\u00e1c c\u00e2u \u0111\u1ed1 v\u00e0 ph\u1ea3n h\u1ed3i \u0111a ph\u01b0\u01a1ng ti\u1ec7n.<br \/>\n\u25cf Khi b\u00e0i ki\u1ec3m tra k\u1ebft th\u00fac, \u0111i\u1ec3m thi, b\u00e1o c\u00e1o c\u00e2u h\u1ecfi, x\u1ebfp h\u1ea1ng v\u00e0 d\u1eef li\u1ec7u ph\u00e2n t\u00edch kh\u00e1c c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c xu\u1ea5t sang thi\u1ebft b\u1ecb c\u1ee7a b\u1ea1n \u1edf \u0111\u1ecbnh d\u1ea1ng t\u1ec7p Excel.<br \/>\n\u25cf API v\u00e0 SSO gi\u00fap c\u00e1c hu\u1ea5n luy\u1ec7n vi\u00ean t\u00edch h\u1ee3p OpenExammaker v\u1edbi Google Classroom, Microsoft Teams, CRM v\u00e0 nhi\u1ec1u h\u01a1n n\u1eefa.<\/p>\n<div class=\"embed_video_blog\">\n<div class=\"embed-responsive embed-responsive-16by9\" style=\"margin-bottom:16px;\">\n <iframe class=\"embed-responsive-item\" src=\"https:\/\/www.youtube.com\/embed\/bv7AAAyFOo4\"><\/iframe>\n<\/div>\n<\/div>\n<div class=\"getstarted-container\">\n<p style=\"margin-bottom: 13px;\">T\u1ea1o b\u00e0i ki\u1ec3m tra\/b\u00e0i ki\u1ec3m tra ti\u1ebfp theo c\u1ee7a b\u1ea1n v\u1edbi OnlineExamMaker<\/p>\n<div class=\"blog_double_btn clearfix\">\n<div class=\"col-sm-6  col-xs-12\">\n<div class=\"p-style-a\"><a class=\"get_started_btn\" href=\"https:\/\/onlineexammaker.com\/sign-up.html?refer=blog_btn\"> B\u1eaft \u0111\u1ea7u mi\u1ec5n ph\u00ed<\/a><\/div>\n<div class=\"p-style-b\">SAAS, mi\u1ec5n ph\u00ed m\u00e3i m\u00e3i<\/div>\n<\/div>\n<div class=\"col-sm-6  col-xs-12\">\n<div class=\"p-style-a\"><a class=\"get_started_btn\" href=\"https:\/\/onlineexammaker.com\/lan.html?refer=blog_btn\">On-Premise: T\u1ea3i xu\u1ed1ng<\/a><\/div>\n<div class=\"p-style-b\">Quy\u1ec1n s\u1edf h\u1eefu d\u1eef li\u1ec7u 100%<\/div>\n<\/div>\n<\/div>\n<\/div>\n<h3 id=\"1\"> Ph\u1ea7n 2: 15 c\u00e2u h\u1ecfi tr\u1eafc nghi\u1ec7m v\u1ec1 t\u01b0\u1eddng l\u1eeda<\/h3>\n<p><button type=\"button\" id=\"copyquestionsBtn\" onClick=\"myFunction()\">Sao ch\u00e9p c\u00e2u h\u1ecfi \u0111\u1ed1<\/button><\/p>\n<div id=\"copy_questions\">\n<p> C\u00e2u h\u1ecfi 1:<br \/>\nT\u01b0\u1eddng l\u1eeda l\u00e0 g\u00ec?<br \/>\nA. M\u1ed9t lo\u1ea1i ph\u1ea7n m\u1ec1m qu\u1ea3n l\u00fd email<br \/>\nB. M\u1ed9t h\u1ec7 th\u1ed1ng gi\u00e1m s\u00e1t v\u00e0 ki\u1ec3m so\u00e1t l\u01b0u l\u01b0\u1ee3ng m\u1ea1ng<br \/>\nC. M\u1ed9t lo\u1ea1i thi\u1ebft b\u1ecb l\u01b0u tr\u1eef d\u1eef li\u1ec7u<br \/>\nD. M\u1ed9t ch\u01b0\u01a1ng tr\u00ecnh di\u1ec7t virus  <\/p>\n<p>\u0110\u00e1p \u00e1n: B<\/p>\n<p> C\u00e2u h\u1ecfi 2:<br \/>\nCh\u1ee9c n\u0103ng ch\u00ednh c\u1ee7a t\u01b0\u1eddng l\u1eeda l\u00e0 g\u00ec?<br \/>\nA. T\u0103ng t\u1ed1c \u0111\u1ed9 m\u1ea1ng<br \/>\nB. B\u1ea3o v\u1ec7 m\u1ea1ng kh\u1ecfi c\u00e1c m\u1ed1i \u0111e d\u1ecda t\u1eeb b\u00ean ngo\u00e0i<br \/>\nC. L\u01b0u tr\u1eef d\u1eef li\u1ec7u<br \/>\nD. Ph\u00e2n t\u00edch hi\u1ec7u su\u1ea5t m\u00e1y t\u00ednh  <\/p>\n<p>\u0110\u00e1p \u00e1n: B<\/p>\n<p> C\u00e2u h\u1ecfi 3:<br \/>\nLo\u1ea1i t\u01b0\u1eddng l\u1eeda n\u00e0o l\u00e0 m\u1ed9t thi\u1ebft b\u1ecb v\u1eadt l\u00fd?<br \/>\nA. T\u01b0\u1eddng l\u1eeda ph\u1ea7n c\u1ee9ng<br \/>\nB. T\u01b0\u1eddng l\u1eeda ph\u1ea7n m\u1ec1m<br \/>\nC. T\u01b0\u1eddng l\u1eeda th\u1ebf h\u1ec7 m\u1edbi (NGFW)<br \/>\nD. T\u01b0\u1eddng l\u1eeda \u0111i\u1ec7n t\u1eed  <\/p>\n<p>\u0110\u00e1p \u00e1n: A<\/p>\n<p> C\u00e2u h\u1ecfi 4:<br \/>\nT\u01b0\u1eddng l\u1eeda ph\u1ea7n m\u1ec1m th\u01b0\u1eddng \u0111\u01b0\u1ee3c c\u00e0i \u0111\u1eb7t \u1edf \u0111\u00e2u?<br \/>\nA. Tr\u00ean router<br \/>\nB. Tr\u00ean m\u00e1y t\u00ednh c\u00e1 nh\u00e2n ho\u1eb7c m\u00e1y ch\u1ee7<br \/>\nC. Tr\u00ean thi\u1ebft b\u1ecb di \u0111\u1ed9ng<br \/>\nD. Tr\u00ean \u1ed5 c\u1ee9ng ngo\u00e0i  <\/p>\n<p>\u0110\u00e1p \u00e1n: B<\/p>\n<p> C\u00e2u h\u1ecfi 5:<br \/>\nCh\u1ee9c n\u0103ng c\u1ee7a t\u01b0\u1eddng l\u1eeda th\u1ebf h\u1ec7 m\u1edbi (NGFW) l\u00e0 g\u00ec?<br \/>\nA. Ki\u1ec3m tra g\u00f3i tin s\u00e2u (DPI)<br \/>\nB. Ng\u0103n ch\u1eb7n x\u00e2m nh\u1eadp (IPS)<br \/>\nC. Ki\u1ec3m so\u00e1t \u1ee9ng d\u1ee5ng<br \/>\nD. T\u1ea5t c\u1ea3 c\u00e1c c\u00e2u tr\u00ean  <\/p>\n<p>\u0110\u00e1p \u00e1n: D<\/p>\n<p> C\u00e2u h\u1ecfi 6:<br \/>\nT\u01b0\u1eddng l\u1eeda ho\u1ea1t \u0111\u1ed9ng d\u1ef1a tr\u00ean g\u00ec \u0111\u1ec3 l\u1ecdc l\u01b0u l\u01b0\u1ee3ng m\u1ea1ng?<br \/>\nA. T\u1ed1c \u0111\u1ed9 m\u1ea1ng<br \/>\nB. Quy t\u1eafc an ninh<br \/>\nC. Dung l\u01b0\u1ee3ng \u1ed5 c\u1ee9ng<br \/>\nD. \u0110\u1ed9 ph\u00e2n gi\u1ea3i m\u00e0n h\u00ecnh  <\/p>\n<p>\u0110\u00e1p \u00e1n: B<\/p>\n<p> C\u00e2u h\u1ecfi 7:<br \/>\n\u0110\u1ecba ch\u1ec9 IP n\u00e0o sau \u0111\u00e2y c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c t\u01b0\u1eddng l\u1eeda s\u1eed d\u1ee5ng \u0111\u1ec3 l\u1ecdc?<br \/>\nA. IP ngu\u1ed3n v\u00e0 IP \u0111\u00edch<br \/>\nB. IP m\u00e1y in<br \/>\nC. IP thi\u1ebft b\u1ecb di \u0111\u1ed9ng<br \/>\nD. IP m\u1ea1ng x\u00e3 h\u1ed9i  <\/p>\n<p>\u0110\u00e1p \u00e1n: A<\/p>\n<p> C\u00e2u h\u1ecfi 8:<br \/>\nT\u01b0\u1eddng l\u1eeda gi\u00fap b\u1ea3o v\u1ec7 h\u1ec7 th\u1ed1ng m\u1ea1ng b\u1eb1ng c\u00e1ch n\u00e0o?<br \/>\nA. Cho ph\u00e9p t\u1ea5t c\u1ea3 c\u00e1c k\u1ebft n\u1ed1i<br \/>\nB. Ch\u1eb7n t\u1ea5t c\u1ea3 c\u00e1c k\u1ebft n\u1ed1i<br \/>\nC. Cho ph\u00e9p c\u00e1c k\u1ebft n\u1ed1i h\u1ee3p l\u1ec7 v\u00e0 ng\u0103n ch\u1eb7n c\u00e1c k\u1ebft n\u1ed1i kh\u00f4ng \u0111\u01b0\u1ee3c ph\u00e9p<br \/>\nD. T\u1eaft ho\u00e0n to\u00e0n m\u1ea1ng  <\/p>\n<p>\u0110\u00e1p \u00e1n: C<\/p>\n<p> C\u00e2u h\u1ecfi 9:<br \/>\nM\u1ed9t trong nh\u1eefng th\u00e1ch th\u1ee9c c\u1ee7a t\u01b0\u1eddng l\u1eeda l\u00e0 g\u00ec?<br \/>\nA. D\u1ec5 d\u00e0ng thi\u1ebft l\u1eadp<br \/>\nB. Chi ph\u00ed th\u1ea5p<br \/>\nC. Y\u00eau c\u1ea7u ki\u1ebfn th\u1ee9c chuy\u00ean s\u00e2u \u0111\u1ec3 qu\u1ea3n l\u00fd<br \/>\nD. T\u0103ng t\u1ed1c \u0111\u1ed9 truy c\u1eadp Internet  <\/p>\n<p>\u0110\u00e1p \u00e1n: C<\/p>\n<p> C\u00e2u h\u1ecfi 10:<br \/>\nT\u01b0\u1eddng l\u1eeda kh\u00f4ng th\u1ec3 b\u1ea3o v\u1ec7 ho\u00e0n to\u00e0n kh\u1ecfi lo\u1ea1i t\u1ea5n c\u00f4ng n\u00e0o?<br \/>\nA. T\u1ea5n c\u00f4ng t\u1eeb b\u00ean ngo\u00e0i<br \/>\nB. T\u1ea5n c\u00f4ng t\u1eeb b\u00ean trong m\u1ea1ng<br \/>\nC. T\u1ea5n c\u00f4ng b\u1eb1ng ph\u1ea7n m\u1ec1m \u0111\u1ed9c h\u1ea1i<br \/>\nD. T\u1ea5n c\u00f4ng b\u1eb1ng virus  <\/p>\n<p>\u0110\u00e1p \u00e1n: B<\/p>\n<p> C\u00e2u h\u1ecfi 11:<br \/>\nT\u01b0\u1eddng l\u1eeda ph\u1ea7n m\u1ec1m ph\u00f9 h\u1ee3p nh\u1ea5t cho \u0111\u1ed1i t\u01b0\u1ee3ng n\u00e0o?<br \/>\nA. Doanh nghi\u1ec7p l\u1edbn<br \/>\nB. Ng\u01b0\u1eddi d\u00f9ng c\u00e1 nh\u00e2n ho\u1eb7c doanh nghi\u1ec7p nh\u1ecf<br \/>\nC. C\u00e1c t\u1ed5 ch\u1ee9c ch\u00ednh ph\u1ee7<br \/>\nD. H\u1ec7 th\u1ed1ng qu\u00e2n s\u1ef1  <\/p>\n<p>\u0110\u00e1p \u00e1n: B<\/p>\n<p> C\u00e2u h\u1ecfi 12:<br \/>\nT\u01b0\u1eddng l\u1eeda th\u1ebf h\u1ec7 m\u1edbi (NGFW) k\u1ebft h\u1ee3p c\u00e1c t\u00ednh n\u0103ng c\u1ee7a t\u01b0\u1eddng l\u1eeda truy\u1ec1n th\u1ed1ng v\u1edbi g\u00ec?<br \/>\nA. T\u0103ng dung l\u01b0\u1ee3ng \u1ed5 c\u1ee9ng<br \/>\nB. Ki\u1ec3m tra g\u00f3i tin s\u00e2u, ng\u0103n ch\u1eb7n x\u00e2m nh\u1eadp v\u00e0 ki\u1ec3m so\u00e1t \u1ee9ng d\u1ee5ng<br \/>\nC. T\u0103ng t\u1ed1c \u0111\u1ed9 m\u1ea1ng<br \/>\nD. T\u1ed1i \u01b0u h\u00f3a ph\u1ea7n m\u1ec1m di\u1ec7t virus  <\/p>\n<p>\u0110\u00e1p \u00e1n: B<\/p>\n<p> C\u00e2u h\u1ecfi 13:<br \/>\nT\u01b0\u1eddng l\u1eeda b\u1ea3o v\u1ec7 d\u1eef li\u1ec7u b\u1eb1ng c\u00e1ch n\u00e0o?<br \/>\nA. L\u01b0u tr\u1eef d\u1eef li\u1ec7u an to\u00e0n<br \/>\nB. Ng\u0103n ch\u1eb7n truy c\u1eadp tr\u00e1i ph\u00e9p v\u00e0o d\u1eef li\u1ec7u quan tr\u1ecdng<br \/>\nC. T\u0103ng dung l\u01b0\u1ee3ng l\u01b0u tr\u1eef<br \/>\nD. T\u0103ng t\u1ed1c \u0111\u1ed9 truy c\u1eadp d\u1eef li\u1ec7u  <\/p>\n<p>\u0110\u00e1p \u00e1n: B<\/p>\n<p> C\u00e2u h\u1ecfi 14:<br \/>\nL\u1ee3i \u00edch c\u1ee7a t\u01b0\u1eddng l\u1eeda trong qu\u1ea3n l\u00fd truy c\u1eadp l\u00e0 g\u00ec?<br \/>\nA. Cho ph\u00e9p truy c\u1eadp m\u1ecdi l\u00fac<br \/>\nB. Qu\u1ea3n l\u00fd v\u00e0 ki\u1ec3m so\u00e1t truy c\u1eadp c\u1ee7a ng\u01b0\u1eddi d\u00f9ng v\u00e0o c\u00e1c t\u00e0i nguy\u00ean m\u1ea1ng<br \/>\nC. T\u0103ng t\u1ed1c \u0111\u1ed9 truy c\u1eadp<br \/>\nD. Gi\u1ea3m b\u0103ng th\u00f4ng m\u1ea1ng  <\/p>\n<p>\u0110\u00e1p \u00e1n: B<\/p>\n<p> C\u00e2u h\u1ecfi 15:<br \/>\nQuy t\u1eafc l\u1ecdc l\u01b0u l\u01b0\u1ee3ng m\u1ea1ng c\u1ee7a t\u01b0\u1eddng l\u1eeda c\u00f3 th\u1ec3 d\u1ef1a tr\u00ean y\u1ebfu t\u1ed1 n\u00e0o?<br \/>\nA. \u0110\u1ecba ch\u1ec9 IP<br \/>\nB. C\u1ed5ng<br \/>\nC. Giao th\u1ee9c<br \/>\nD. T\u1ea5t c\u1ea3 c\u00e1c y\u1ebfu t\u1ed1 tr\u00ean  <\/p>\n<p>\u0110\u00e1p \u00e1n: D<\/p>\n<\/div>\n<p><button type=\"button\" id=\"copyquestionsBtn\" onClick=\"myFunction()\">Sao ch\u00e9p c\u00e2u h\u1ecfi \u0111\u1ed1<\/button><\/p>\n<h3 id=\"2\">Ph\u1ea7n 3: Tr\u00ecnh t\u1ea1o c\u00e2u h\u1ecfi AI c\u1ee7a OnlineExamMaker: T\u1ea1o c\u00e2u h\u1ecfi cho b\u1ea5t k\u1ef3 ch\u1ee7 \u0111\u1ec1 n\u00e0o<\/h3>\n<div class=\"embed_video_blog\">\n<div class=\"embed-responsive embed-responsive-16by9\" style=\"margin-bottom:16px;\">\n <iframe class=\"embed-responsive-item\" src=\"https:\/\/www.youtube.com\/embed\/zlqho9igH2Y\"><\/iframe>\n<\/div>\n<\/div>\n<div class=\"getstarted-container\">\n<p style=\"margin-bottom: 13px;\">T\u1ef1 \u0111\u1ed9ng t\u1ea1o c\u00e2u h\u1ecfi b\u1eb1ng AI<\/p>\n<div class=\"blog_double_btn clearfix\">\n<div class=\"col-sm-6  col-xs-12\">\n<div class=\"p-style-a\"><a class=\"get_started_btn\" href=\"https:\/\/onlineexammaker.com\/features\/ai-question-generator.html?refer=download_questions\" target=\"_blank\" rel=\"noopener\">Tr\u00ecnh t\u1ea1o c\u00e2u h\u1ecfi AI<\/a><\/div>\n<div class=\"p-style-b\">T\u1ea1o c\u00e2u h\u1ecfi cho b\u1ea5t k\u1ef3 ch\u1ee7 \u0111\u1ec1 n\u00e0o<\/div>\n<\/div>\n<div class=\"col-sm-6  col-xs-12\">\n<div class=\"p-style-a\"><a class=\"get_started_btn\" href=\"https:\/\/onlineexammaker.com\/sign-up.html?refer=blog_btn\"> T\u1ea1o m\u1ed9t c\u00e2u \u0111\u1ed1<\/a><\/div>\n<div class=\"p-style-b\">Mi\u1ec5n ph\u00ed 100% m\u00e3i m\u00e3i<\/div>\n<\/div>\n<\/div>\n<\/div>\n<p><script src=\"https:\/\/unpkg.com\/@popperjs\/core@2\"><\/script><br \/>\n<script src=\"https:\/\/unpkg.com\/tippy.js@6\"><\/script><\/p>\n<p><script type=\"text\/javascript\">\nfunction myFunction() {\nvar copyText = document.getElementById(\"copy_questions\");\n\/\/ Copy the text inside the text field\nconsole.log(copyText.innerText)\nnavigator.clipboard.writeText(copyText.innerText);\n}\nvar copy1, copy2;\n        tippy('#copyquestionsBtn', {\n        'content': \"Copy questions to clipboard\",\n       trigger: 'mouseenter',\n       'onCreate':function(instance){\n              copy1 = instance;\n       },\n       'onTrigger' : function(instance, event) {\n              copy2.hide();\n       }\n       });\n       tippy('#copyquestionsBtn', {\n       'content': \"Copied successfully\",\n       trigger: 'click',\n       'onCreate':function(instance){\n              copy2 = instance;\n       },\n       'onTrigger' : function(instance, event) {\n              copy1.hide();\n       }\n       });\n<\/script><\/p>\n","protected":false},"excerpt":{"rendered":"<p>1. T\u01b0\u1eddng l\u1eeda l\u00e0 g\u00ec? T\u01b0\u1eddng l\u1eeda (Firewall) l\u00e0 m\u1ed9t h\u1ec7 th\u1ed1ng an ninh m\u1ea1ng thi\u1ebft y\u1ebfu, \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 gi\u00e1m s\u00e1t v\u00e0 ki\u1ec3m so\u00e1t l\u01b0u l\u01b0\u1ee3ng m\u1ea1ng ra v\u00e0o d\u1ef1a tr\u00ean c\u00e1c quy t\u1eafc an ninh \u0111\u00e3 \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh tr\u01b0\u1edbc. M\u1ee5c ti\u00eau ch\u00ednh c\u1ee7a t\u01b0\u1eddng l\u1eeda l\u00e0 b\u1ea3o v\u1ec7 c\u00e1c h\u1ec7 th\u1ed1ng [&hellip;]<\/p>\n","protected":false},"author":7,"featured_media":14890,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6049],"tags":[],"class_list":["post-36481","post","type-post","status-publish","format-standard","hentry","category-questions-answers-vi"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v20.9 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>2026 | 15 c\u00e2u h\u1ecfi v\u00e0 c\u00e2u tr\u1ea3 l\u1eddi cho b\u00e0i ki\u1ec3m tra t\u01b0\u1eddng l\u1eeda - OnlineExamMaker Blog<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/onlineexammaker.com\/kb\/vi\/15-firewall-quiz-questions-and-answers-12\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"2026 | 15 c\u00e2u h\u1ecfi v\u00e0 c\u00e2u tr\u1ea3 l\u1eddi cho b\u00e0i ki\u1ec3m tra t\u01b0\u1eddng l\u1eeda - OnlineExamMaker Blog\" \/>\n<meta property=\"og:description\" content=\"1. 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