{"id":525921,"date":"2026-01-31T09:39:49","date_gmt":"2026-01-31T02:39:49","guid":{"rendered":"https:\/\/hoanghamobile.com\/tin-tuc\/?p=525921"},"modified":"2026-02-01T09:43:47","modified_gmt":"2026-02-01T02:43:47","slug":"cong-lan","status":"publish","type":"post","link":"https:\/\/hoanghamobile.com\/tin-tuc\/cong-lan\/","title":{"rendered":"C\u1ed5ng LAN l\u00e0 g\u00ec? T\u00ecm hi\u1ec3u t\u1eeb A\u2013Z v\u1ec1 c\u1ed5ng m\u1ea1ng LAN tr\u00ean m\u00e1y t\u00ednh"},"content":{"rendered":"<p data-path-to-node=\"8\">Trong k\u1ef7 nguy\u00ean Internet v\u1ea1n v\u1eadt (IoT) v\u00e0 t\u1ed1c \u0111\u1ed9 m\u1ea1ng 6G \u0111ang b\u1eaft \u0111\u1ea7u nhen nh\u00f3m v\u00e0o n\u0103m 2026, ch\u00fang ta th\u01b0\u1eddng nghe nhi\u1ec1u v\u1ec1 WiFi v\u00e0 c\u00e1c k\u1ebft n\u1ed1i kh\u00f4ng d\u00e2y ti\u1ec7n l\u1ee3i. Tuy nhi\u00ean, \u0111\u1ed1i v\u1edbi nh\u1eefng ng\u01b0\u1eddi l\u00e0m \u0111\u1ed3 h\u1ecda chuy\u00ean nghi\u1ec7p, c\u00e1c game th\u1ee7 thi \u0111\u1ea5u eSports hay nh\u1eefng k\u1ef9 s\u01b0 d\u1eef li\u1ec7u, <b data-path-to-node=\"8\" data-index-in-node=\"282\">c\u1ed5ng LAN <\/b>v\u1eabn l\u00e0 m\u1ed9t bi\u1ec3u t\u01b0\u1ee3ng c\u1ee7a s\u1ef1 tin c\u1eady tuy\u1ec7t \u0111\u1ed1i. M\u1ed9t s\u1ee3i d\u00e2y c\u00e1p c\u1eafm tr\u1ef1c ti\u1ebfp v\u00e0o thi\u1ebft b\u1ecb lu\u00f4n mang l\u1ea1i c\u1ea3m gi\u00e1c an t\u00e2m v\u1ec1 t\u1ed1c \u0111\u1ed9 v\u00e0 s\u1ef1 \u1ed5n \u0111\u1ecbnh m\u00e0 s\u00f3ng v\u00f4 tuy\u1ebfn kh\u00f3 l\u00f2ng thay th\u1ebf ho\u00e0n to\u00e0n. V\u1eady th\u1ef1c ch\u1ea5t c\u1ed5ng LAN l\u00e0 g\u00ec v\u00e0 n\u00f3 \u0111\u00f3ng vai tr\u00f2 nh\u01b0 th\u1ebf n\u00e0o trong h\u1ec7 th\u1ed1ng m\u1ea1ng gia \u0111\u00ecnh b\u1ea1n?<\/p>\n<h2 data-path-to-node=\"10\">LAN l\u00e0 g\u00ec?<\/h2>\n<p data-path-to-node=\"11\">Tr\u01b0\u1edbc khi t\u00ecm hi\u1ec3u v\u1ec1 c\u1ed5ng k\u1ebft n\u1ed1i, ch\u00fang ta c\u1ea7n hi\u1ec3u r\u00f5 kh\u00e1i ni\u1ec7m LAN. LAN (vi\u1ebft t\u1eaft c\u1ee7a Local Area Network) l\u00e0 m\u1ea1ng n\u1ed9i b\u1ed9 d\u00f9ng \u0111\u1ec3 k\u1ebft n\u1ed1i c\u00e1c m\u00e1y t\u00ednh v\u00e0 thi\u1ebft b\u1ecb trong m\u1ed9t ph\u1ea1m vi h\u1eb9p nh\u01b0 nh\u00e0 \u1edf, v\u0103n ph\u00f2ng, tr\u01b0\u1eddng h\u1ecdc hay t\u00f2a nh\u00e0. \u0110\u1eb7c \u0111i\u1ec3m c\u1ee7a m\u1ea1ng LAN l\u00e0 c\u00f3 t\u1ed1c \u0111\u1ed9 truy\u1ec1n t\u1ea3i d\u1eef li\u1ec7u r\u1ea5t cao v\u00e0 \u0111\u1ed9 tr\u1ec5 (latency) c\u1ef1c th\u1ea5p do d\u1eef li\u1ec7u kh\u00f4ng ph\u1ea3i di chuy\u1ec3n qua c\u00e1c qu\u00e3ng \u0111\u01b0\u1eddng d\u00e0i ngo\u00e0i Internet c\u00f4ng c\u1ed9ng.<\/p>\n<p style=\"text-align: center;\" data-path-to-node=\"11\"><picture><source srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2026\/01\/cong-lan-1.jpg.webp 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2026\/01\/cong-lan-1-300x169.jpg.webp 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2026\/01\/cong-lan-1-768x432.jpg.webp 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" type=\"image\/webp\"><img fetchpriority=\"high\" decoding=\"async\" class=\"alignnone size-full wp-image-526255 webpexpress-processed\" src=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/01\/cong-lan-1.jpg\" alt=\"cong-lan-la-gi-tim-hieu-tu-a-z-ve-cong-mang-lan-tren-may-tinh-1\" width=\"800\" height=\"450\" srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/01\/cong-lan-1.jpg 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/01\/cong-lan-1-300x169.jpg 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/01\/cong-lan-1-768x432.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\"><\/picture><\/p>\n<p data-path-to-node=\"12\">M\u1ea1ng LAN cho ph\u00e9p c\u00e1c thi\u1ebft b\u1ecb trong c\u00f9ng m\u1ed9t h\u1ec7 th\u1ed1ng d\u1ec5 d\u00e0ng chia s\u1ebb t\u00e0i nguy\u00ean v\u1edbi nhau, v\u00ed d\u1ee5 nh\u01b0 d\u00f9ng chung m\u1ed9t chi\u1ebfc m\u00e1y in, truy c\u1eadp v\u00e0o \u1ed5 c\u1ee9ng m\u1ea1ng (NAS) chung ho\u1eb7c \u0111\u01a1n gi\u1ea3n l\u00e0 ch\u01a1i game c\u00f9ng nhau trong m\u1ed9t ph\u00f2ng m\u00e1y. \u0110\u00e2y l\u00e0 n\u1ec1n t\u1ea3ng c\u01a1 b\u1ea3n nh\u1ea5t c\u1ee7a m\u1ecdi h\u1ec7 th\u1ed1ng k\u1ebft n\u1ed1i m\u1ea1ng, t\u1eeb nh\u1eefng c\u1ea5u h\u00ecnh \u0111\u01a1n gi\u1ea3n ch\u1ec9 g\u1ed3m m\u1ed9t router v\u00e0 hai m\u00e1y t\u00ednh cho \u0111\u1ebfn nh\u1eefng h\u1ec7 th\u1ed1ng m\u1ea1ng doanh nghi\u1ec7p ph\u1ee9c t\u1ea1p v\u1edbi h\u00e0ng ngh\u00ecn n\u00fat m\u1ea1ng.<\/p>\n<h2 data-path-to-node=\"14\">C\u1ed5ng LAN l\u00e0 g\u00ec?<\/h2>\n<p data-path-to-node=\"15\">C\u1ed5ng LAN (hay c\u00f2n g\u1ecdi l\u00e0 c\u1ed5ng Ethernet ho\u1eb7c c\u1ed5ng RJ45) l\u00e0 giao di\u1ec7n v\u1eadt l\u00fd tr\u00ean c\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed d\u00f9ng \u0111\u1ec3 k\u1ebft n\u1ed1i v\u00e0o m\u1ea1ng c\u1ee5c b\u1ed9 th\u00f4ng qua d\u00e2y c\u00e1p. B\u1ea1n c\u00f3 th\u1ec3 d\u1ec5 d\u00e0ng nh\u1eadn ra c\u1ed5ng lan ph\u00eda sau th\u00f9ng m\u00e1y t\u00ednh (PC), c\u1ea1nh b\u00ean c\u1ee7a laptop (d\u00f9 hi\u1ec7n nay nhi\u1ec1u d\u00f2ng laptop m\u1ecfng nh\u1eb9 \u0111\u00e3 l\u01b0\u1ee3c b\u1ecf c\u1ed5ng n\u00e0y), m\u1eb7t sau c\u1ee7a Smart TV, m\u00e1y ch\u01a1i game Console (PS5, Xbox) hay tr\u00ean c\u00e1c thi\u1ebft b\u1ecb m\u1ea1ng nh\u01b0 Router v\u00e0 Modem.<\/p>\n<p style=\"text-align: center;\" data-path-to-node=\"15\"><picture><source srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2026\/01\/cong-lan-3.jpg.webp 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2026\/01\/cong-lan-3-300x169.jpg.webp 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2026\/01\/cong-lan-3-768x432.jpg.webp 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" type=\"image\/webp\"><img decoding=\"async\" class=\"alignnone size-full wp-image-526257 webpexpress-processed\" src=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/01\/cong-lan-3.jpg\" alt=\"cong-lan-la-gi-tim-hieu-tu-a-z-ve-cong-mang-lan-tren-may-tinh-3\" width=\"800\" height=\"450\" srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/01\/cong-lan-3.jpg 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/01\/cong-lan-3-300x169.jpg 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/01\/cong-lan-3-768x432.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\"><\/picture><\/p>\n<p data-path-to-node=\"16\">V\u1ec1 m\u1eb7t k\u1ef9 thu\u1eadt, c\u1ed5ng LAN \u0111\u00f3ng vai tr\u00f2 l\u00e0 \u0111i\u1ec3m cu\u1ed1i (endpoint) \u0111\u1ec3 truy\u1ec1n v\u00e0 nh\u1eadn c\u00e1c g\u00f3i tin d\u01b0\u1edbi d\u1ea1ng t\u00edn hi\u1ec7u \u0111i\u1ec7n. Khi b\u1ea1n c\u1eafm m\u1ed9t \u0111\u1ea7u d\u00e2y c\u00e1p m\u1ea1ng v\u00e0o c\u1ed5ng LAN tr\u00ean router v\u00e0 \u0111\u1ea7u c\u00f2n l\u1ea1i v\u00e0o m\u00e1y t\u00ednh, m\u1ed9t \u0111\u01b0\u1eddng truy\u1ec1n d\u1eef li\u1ec7u v\u1eadt l\u00fd \u0111\u01b0\u1ee3c thi\u1ebft l\u1eadp, cho ph\u00e9p thi\u1ebft b\u1ecb c\u1ee7a b\u1ea1n gia nh\u1eadp v\u00e0o m\u1ea1ng n\u1ed9i b\u1ed9 v\u00e0 truy c\u1eadp Internet. \u0110\u00e2y \u0111\u01b0\u1ee3c coi l\u00e0 ph\u01b0\u01a1ng th\u1ee9c k\u1ebft n\u1ed1i truy\u1ec1n th\u1ed1ng nh\u1ea5t nh\u01b0ng c\u0169ng m\u1ea1nh m\u1ebd v\u00e0 \u00edt b\u1ecb nhi\u1ec5u nh\u1ea5t hi\u1ec7n nay.<\/p>\n<h2 data-path-to-node=\"18\">C\u1ea5u t\u1ea1o v\u00e0 nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng c\u1ee7a c\u1ed5ng LAN<\/h2>\n<p data-path-to-node=\"19\">M\u1ed9t c\u1ed5ng LAN ti\u00eau chu\u1ea9n c\u00f3 c\u1ea5u t\u1ea1o d\u1ea1ng h\u00ecnh ch\u1eef nh\u1eadt v\u1edbi m\u1ed9t khe l\u00f5m nh\u1ecf \u0111\u1ec3 c\u1ed1 \u0111\u1ecbnh \u0111\u1ea7u c\u00e1p (th\u01b0\u1eddng g\u1ecdi l\u00e0 \u0111\u1ea7u RJ45). B\u00ean trong c\u1ed5ng c\u00f3 8 \u0111i\u1ec3m ti\u1ebfp x\u00fac (pin) b\u1eb1ng \u0111\u1ed3ng \u0111\u01b0\u1ee3c m\u1ea1 v\u00e0ng \u0111\u1ec3 ch\u1ed1ng oxy h\u00f3a v\u00e0 t\u0103ng kh\u1ea3 n\u0103ng d\u1eabn \u0111i\u1ec7n. 8 \u0111i\u1ec3m ti\u1ebfp x\u00fac n\u00e0y t\u01b0\u01a1ng \u1ee9ng v\u1edbi 8 s\u1ee3i d\u00e2y l\u00f5i b\u00ean trong c\u00e1p Ethernet, \u0111\u01b0\u1ee3c xo\u1eafn th\u00e0nh t\u1eebng c\u1eb7p \u0111\u1ec3 tri\u1ec7t ti\u00eau nhi\u1ec5u \u0111i\u1ec7n t\u1eeb.<\/p>\n<p style=\"text-align: center;\" data-path-to-node=\"19\"><picture><source srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2026\/01\/cong-lan-5.jpg.webp 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2026\/01\/cong-lan-5-300x169.jpg.webp 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2026\/01\/cong-lan-5-768x432.jpg.webp 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" type=\"image\/webp\"><img decoding=\"async\" class=\"alignnone size-full wp-image-526259 webpexpress-processed\" src=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/01\/cong-lan-5.jpg\" alt=\"cong-lan-la-gi-tim-hieu-tu-a-z-ve-cong-mang-lan-tren-may-tinh-5\" width=\"800\" height=\"450\" srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/01\/cong-lan-5.jpg 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/01\/cong-lan-5-300x169.jpg 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/01\/cong-lan-5-768x432.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\"><\/picture><\/p>\n<p data-path-to-node=\"20\">Nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng c\u1ee7a c\u1ed5ng LAN d\u1ef1a tr\u00ean vi\u1ec7c chuy\u1ec3n \u0111\u1ed5i d\u1eef li\u1ec7u s\u1ed1 (digital) t\u1eeb m\u00e1y t\u00ednh th\u00e0nh c\u00e1c xung \u0111i\u1ec7n \u0111\u1ec3 truy\u1ec1n \u0111i qua d\u00e2y c\u00e1p v\u00e0 ng\u01b0\u1ee3c l\u1ea1i. Qu\u00e1 tr\u00ecnh n\u00e0y di\u1ec5n ra v\u1edbi t\u1ed1c \u0111\u1ed9 c\u1ef1c nhanh, l\u00ean \u0111\u1ebfn h\u00e0ng t\u1ef7 bit m\u1ed7i gi\u00e2y (<span class=\"math-inline\" data-math=\"10^9\" data-index-in-node=\"224\">10^9<\/span> bps). Khi hai thi\u1ebft b\u1ecb \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i, ch\u00fang s\u1ebd th\u1ef1c hi\u1ec7n m\u1ed9t qu\u00e1 tr\u00ecnh g\u1ecdi l\u00e0 b\u1eaft tay (handshaking) \u0111\u1ec3 th\u1ed1ng nh\u1ea5t v\u1ec1 t\u1ed1c \u0111\u1ed9 truy\u1ec1n t\u1ea3i cao nh\u1ea5t m\u00e0 c\u1ea3 hai c\u00f9ng h\u1ed7 tr\u1ee3, \u0111\u1ea3m b\u1ea3o d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c lu\u00e2n chuy\u1ec3n m\u01b0\u1ee3t m\u00e0 m\u00e0 kh\u00f4ng b\u1ecb l\u1ed7i.<\/p>\n<h2 data-path-to-node=\"22\">C\u00e1c lo\u1ea1i k\u1ebft n\u1ed1i trong m\u1ea1ng LAN<\/h2>\n<p data-path-to-node=\"23\">M\u1ea1ng LAN kh\u00f4ng c\u00f2n l\u00e0 kh\u00e1i ni\u1ec7m b\u00f3 h\u1eb9p trong nh\u1eefng s\u1ee3i d\u00e2y c\u00e1p truy\u1ec1n th\u1ed1ng. T\u00f9y v\u00e0o nhu c\u1ea7u v\u1ec1 t\u1ed1c \u0111\u1ed9, t\u00ednh di \u0111\u1ed9ng v\u00e0 \u0111\u1eb7c \u0111i\u1ec3m kh\u00f4ng gian, m\u1ea1ng LAN hi\u1ec7n nay \u0111\u01b0\u1ee3c chia th\u00e0nh hai nh\u00e1nh ch\u00ednh d\u1ef1a tr\u00ean ph\u01b0\u01a1ng th\u1ee9c truy\u1ec1n d\u1eabn.<\/p>\n<h3 data-path-to-node=\"24\">K\u1ebft n\u1ed1i LAN c\u00f3 d\u00e2y (Ethernet)<\/h3>\n<p data-path-to-node=\"5\">\u0110\u00e2y l\u00e0 lo\u1ea1i k\u1ebft n\u1ed1i kinh \u0111i\u1ec3n v\u00e0 b\u1ec1n v\u1eefng nh\u1ea5t th\u00f4ng qua vi\u1ec7c s\u1eed d\u1ee5ng c\u00e1p m\u1ea1ng (th\u01b0\u1eddng l\u00e0 c\u00e1p \u0111\u1ed3ng xo\u1eafn \u0111\u00f4i nh\u01b0 Cat6, Cat6a ho\u1eb7c Cat7) c\u1eafm tr\u1ef1c ti\u1ebfp v\u00e0o c\u1ed5ng LAN.<\/p>\n<ul data-path-to-node=\"6\">\n<li>\n<p data-path-to-node=\"6,0,0\"><b data-path-to-node=\"6,0,0\" data-index-in-node=\"0\">\u01afu \u0111i\u1ec3m:<\/b> Mang l\u1ea1i t\u1ed1c \u0111\u1ed9 truy\u1ec1n t\u1ea3i cao nh\u1ea5t v\u00e0 \u0111\u1ed9 tr\u1ec5 (ping) g\u1ea7n nh\u01b0 b\u1eb1ng kh\u00f4ng. V\u00e0o n\u0103m 2026, k\u1ebft n\u1ed1i Ethernet \u0111\u00e3 ph\u1ed5 c\u1eadp chu\u1ea9n 2.5Gbps v\u00e0 10Gbps, cho ph\u00e9p x\u1eed l\u00fd c\u00e1c t\u00e1c v\u1ee5 kh\u1ed5ng l\u1ed3 nh\u01b0 d\u1ef1ng phim 8K tr\u1ef1c tuy\u1ebfn ho\u1eb7c ch\u1ea1y m\u00e1y ch\u1ee7 t\u1ea1i gia.<\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"6,1,0\"><b data-path-to-node=\"6,1,0\" data-index-in-node=\"0\">\u1ee8ng d\u1ee5ng:<\/b> D\u00e0nh cho c\u00e1c thi\u1ebft b\u1ecb c\u1ed1 \u0111\u1ecbnh c\u1ea7n s\u1ef1 \u1ed5n \u0111\u1ecbnh tuy\u1ec7t \u0111\u1ed1i nh\u01b0 m\u00e1y t\u00ednh \u0111\u1ec3 b\u00e0n (PC), m\u00e1y ch\u1ee7 l\u01b0u tr\u1eef (NAS), Smart TV v\u00e0 m\u00e1y ch\u01a1i game Console.<\/p>\n<\/li>\n<\/ul>\n<p style=\"text-align: center;\"><picture><source srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2026\/01\/cong-lan-6.jpg.webp 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2026\/01\/cong-lan-6-300x169.jpg.webp 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2026\/01\/cong-lan-6-768x432.jpg.webp 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" type=\"image\/webp\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-526260 webpexpress-processed\" src=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/01\/cong-lan-6.jpg\" alt=\"cong-lan-la-gi-tim-hieu-tu-a-z-ve-cong-mang-lan-tren-may-tinh-6\" width=\"800\" height=\"450\" srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/01\/cong-lan-6.jpg 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/01\/cong-lan-6-300x169.jpg 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/01\/cong-lan-6-768x432.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\"><\/picture><\/p>\n<h3 data-path-to-node=\"26\">K\u1ebft n\u1ed1i LAN kh\u00f4ng d\u00e2y (WiFi)<\/h3>\n<p data-path-to-node=\"8\">K\u1ebft n\u1ed1i n\u00e0y s\u1eed d\u1ee5ng s\u00f3ng v\u00f4 tuy\u1ebfn \u0111\u1ec3 truy\u1ec1n d\u1eef li\u1ec7u, cho ph\u00e9p c\u00e1c thi\u1ebft b\u1ecb gia nh\u1eadp m\u1ea1ng n\u1ed9i b\u1ed9 m\u00e0 kh\u00f4ng c\u1ea7n d\u00e2y c\u00e1p v\u1eadt l\u00fd. V\u1edbi s\u1ef1 ph\u1ed5 bi\u1ebfn c\u1ee7a chu\u1ea9n WiFi 7 trong n\u0103m 2026, kho\u1ea3ng c\u00e1ch v\u1ec1 t\u1ed1c \u0111\u1ed9 gi\u1eefa kh\u00f4ng d\u00e2y v\u00e0 c\u00f3 d\u00e2y \u0111\u00e3 \u0111\u01b0\u1ee3c thu h\u1eb9p \u0111\u00e1ng k\u1ec3.<\/p>\n<ul data-path-to-node=\"9\">\n<li>\n<p data-path-to-node=\"9,0,0\"><b data-path-to-node=\"9,0,0\" data-index-in-node=\"0\">\u01afu \u0111i\u1ec3m:<\/b> C\u1ef1c k\u1ef3 linh ho\u1ea1t v\u00e0 ti\u1ec7n l\u1ee3i. B\u1ea1n c\u00f3 th\u1ec3 di chuy\u1ec3n kh\u1eafp nh\u00e0 ho\u1eb7c v\u0103n ph\u00f2ng m\u00e0 v\u1eabn duy tr\u00ec \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i. N\u00f3 lo\u1ea1i b\u1ecf ho\u00e0n to\u00e0n s\u1ef1 r\u1eafc r\u1ed1i c\u1ee7a vi\u1ec7c \u0111i d\u00e2y \u0111\u1ee5c t\u01b0\u1eddng.<\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"9,1,0\"><b data-path-to-node=\"9,1,0\" data-index-in-node=\"0\">\u1ee8ng d\u1ee5ng:<\/b> Ph\u00f9 h\u1ee3p cho \u0111i\u1ec7n tho\u1ea1i th\u00f4ng minh, m\u00e1y t\u00ednh b\u1ea3ng, laptop v\u00e0 h\u1ec7 sinh th\u00e1i thi\u1ebft b\u1ecb th\u00f4ng minh (Smart Home) nh\u01b0 robot h\u00fat b\u1ee5i, loa th\u00f4ng minh.<\/p>\n<\/li>\n<\/ul>\n<p style=\"text-align: center;\"><picture><source srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2026\/01\/cong-lan-4.jpg.webp 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2026\/01\/cong-lan-4-300x169.jpg.webp 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2026\/01\/cong-lan-4-768x432.jpg.webp 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" type=\"image\/webp\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-526258 webpexpress-processed\" src=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/01\/cong-lan-4.jpg\" alt=\"cong-lan-la-gi-tim-hieu-tu-a-z-ve-cong-mang-lan-tren-may-tinh-4\" width=\"800\" height=\"450\" srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/01\/cong-lan-4.jpg 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/01\/cong-lan-4-300x169.jpg 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/01\/cong-lan-4-768x432.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\"><\/picture><\/p>\n<h3 data-path-to-node=\"28\">So s\u00e1nh LAN c\u00f3 d\u00e2y v\u00e0 LAN kh\u00f4ng d\u00e2y<\/h3>\n<table data-path-to-node=\"29\">\n<thead>\n<tr>\n<td><strong>Ti\u00eau ch\u00ed<\/strong><\/td>\n<td><strong>LAN c\u00f3 d\u00e2y (C\u1ed5ng LAN)<\/strong><\/td>\n<td><strong>LAN kh\u00f4ng d\u00e2y (WiFi)<\/strong><\/td>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><span data-path-to-node=\"29,1,0,0\"><b data-path-to-node=\"29,1,0,0\" data-index-in-node=\"0\">T\u1ed1c \u0111\u1ed9<\/b><\/span><\/td>\n<td><span data-path-to-node=\"29,1,1,0\">R\u1ea5t cao v\u00e0 \u1ed5n \u0111\u1ecbnh (<span class=\"math-inline\" data-math=\"1Gbps - 10Gbps\" data-index-in-node=\"20\">$1Gbps &#8211; 10Gbps$<\/span>)<\/span><\/td>\n<td><span data-path-to-node=\"29,1,2,0\">Cao nh\u01b0ng bi\u1ebfn thi\u00ean theo kho\u1ea3ng c\u00e1ch<\/span><\/td>\n<\/tr>\n<tr>\n<td><span data-path-to-node=\"29,2,0,0\"><b data-path-to-node=\"29,2,0,0\" data-index-in-node=\"0\">\u0110\u1ed9 tr\u1ec5 (Ping)<\/b><\/span><\/td>\n<td><span data-path-to-node=\"29,2,1,0\">C\u1ef1c th\u1ea5p (l\u00fd t\u01b0\u1edfng cho gaming)<\/span><\/td>\n<td><span data-path-to-node=\"29,2,2,0\">Cao h\u01a1n v\u00e0 d\u1ec5 b\u1ecb &#8220;lag&#8221; \u0111\u1ed9t ng\u1ed9t<\/span><\/td>\n<\/tr>\n<tr>\n<td><span data-path-to-node=\"29,3,0,0\"><b data-path-to-node=\"29,3,0,0\" data-index-in-node=\"0\">T\u00ednh b\u1ea3o m\u1eadt<\/b><\/span><\/td>\n<td><span data-path-to-node=\"29,3,1,0\">Cao (ph\u1ea3i c\u1eafm d\u00e2y v\u1eadt l\u00fd m\u1edbi v\u00e0o \u0111\u01b0\u1ee3c)<\/span><\/td>\n<td><span data-path-to-node=\"29,3,2,0\">Th\u1ea5p h\u01a1n (d\u1ec5 b\u1ecb t\u1ea5n c\u00f4ng t\u1eeb xa)<\/span><\/td>\n<\/tr>\n<tr>\n<td><span data-path-to-node=\"29,4,0,0\"><b data-path-to-node=\"29,4,0,0\" data-index-in-node=\"0\">S\u1ef1 ti\u1ec7n l\u1ee3i<\/b><\/span><\/td>\n<td><span data-path-to-node=\"29,4,1,0\">Th\u1ea5p (ph\u1ea3i \u0111i d\u00e2y lo\u1eb1ng ngo\u1eb1ng)<\/span><\/td>\n<td><span data-path-to-node=\"29,4,2,0\">R\u1ea5t cao (k\u1ebft n\u1ed1i m\u1ecdi l\u00fac m\u1ecdi n\u01a1i)<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p data-path-to-node=\"7\">Khi c\u00e1c g\u00f3i c\u01b0\u1edbc Internet h\u1ed9 gia \u0111\u00ecnh \u0111\u00e3 ph\u1ed5 bi\u1ebfn \u1edf m\u1ee9c 1Gbps tr\u1edf l\u00ean, vi\u1ec7c s\u1eed d\u1ee5ng WiFi \u0111\u00f4i khi s\u1ebd t\u1ea1o ra m\u1ed9t n\u00fat th\u1eaft c\u1ed5 chai. Ngay c\u1ea3 v\u1edbi chu\u1ea9n WiFi 7 c\u00f3 t\u1ed1c \u0111\u1ed9 l\u00fd thuy\u1ebft c\u1ef1c cao, t\u1ed1c \u0111\u1ed9 th\u1ef1c t\u1ebf \u0111o \u0111\u01b0\u1ee3c qua c\u00e1c l\u1edbp t\u01b0\u1eddng v\u1eabn kh\u00f3 l\u00f2ng duy tr\u00ec \u0111\u01b0\u1ee3c s\u1ef1 \u1ed5n \u0111\u1ecbnh nh\u01b0 m\u1ed9t s\u1ee3i c\u00e1p LAN Cat6a. Do \u0111\u00f3, n\u1ebfu b\u1ea1n c\u1ea7n hi\u1ec7u su\u1ea5t, h\u00e3y ch\u1ecdn c\u1ed5ng LAN. N\u00f3 gi\u00fap m\u00e1y t\u00ednh c\u1ee7a b\u1ea1n ho\u1ea1t \u0111\u1ed9ng h\u1ebft c\u00f4ng su\u1ea5t c\u1ee7a nh\u00e0 m\u1ea1ng. N\u1ebfu b\u1ea1n c\u1ea7n s\u1ef1 t\u1ef1 do,\u00a0WiFi l\u00e0 l\u1ef1a ch\u1ecdn duy nh\u1ea5t. V\u1edbi c\u00e1c h\u1ec7 th\u1ed1ng WiFi Mesh hi\u1ec7n \u0111\u1ea1i, b\u1ea1n c\u00f3 th\u1ec3 ph\u1ee7 s\u00f3ng kh\u1eafp bi\u1ec7t th\u1ef1 3-4 t\u1ea7ng m\u00e0 kh\u00f4ng c\u1ea7n k\u00e9o d\u00e2y lo\u1eb1ng ngo\u1eb1ng, \u0111\u1ed5i l\u1ea1i l\u00e0 m\u1ee9c chi ph\u00ed \u0111\u1ea7u t\u01b0 thi\u1ebft b\u1ecb ph\u00e1t s\u00f3ng s\u1ebd cao h\u01a1n nhi\u1ec1u.<\/p>\n<h2 data-path-to-node=\"31\">C\u00e1c chu\u1ea9n t\u1ed1c \u0111\u1ed9 c\u1ee7a c\u1ed5ng LAN ph\u1ed5 bi\u1ebfn<\/h2>\n<p data-path-to-node=\"3\">Vi\u1ec7c l\u1ef1a ch\u1ecdn \u0111\u00fang chu\u1ea9n t\u1ed1c \u0111\u1ed9 c\u1ee7a c\u1ed5ng LAN kh\u00f4ng ch\u1ec9 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn tr\u1ea3i nghi\u1ec7m Internet m\u00e0 c\u00f2n quy\u1ebft \u0111\u1ecbnh hi\u1ec7u su\u1ea5t l\u00e0m vi\u1ec7c trong m\u1ea1ng n\u1ed9i b\u1ed9. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 ba ph\u00e2n kh\u00fac t\u1ed1c \u0111\u1ed9 ch\u00ednh hi\u1ec7n nay:<\/p>\n<h3 data-path-to-node=\"4\">Fast Ethernet (100Mbps)<\/h3>\n<p data-path-to-node=\"5\">Fast Ethernet, hay c\u00f2n \u0111\u01b0\u1ee3c bi\u1ebft \u0111\u1ebfn v\u1edbi k\u00fd hi\u1ec7u 10\/100 Mbps, l\u00e0 m\u1ed9t chu\u1ea9n k\u1ebft n\u1ed1i \u0111\u00e3 c\u00f3 tu\u1ed5i \u0111\u1eddi kh\u00e1 l\u00e2u trong ng\u00e0nh \u0111i\u1ec7n to\u00e1n. \u1ede th\u1eddi \u0111i\u1ec3m n\u0103m 2026, t\u1ed1c \u0111\u1ed9 t\u1ed1i \u0111a <span class=\"math-inline\" data-math=\"100\" data-index-in-node=\"165\">100<\/span> Mbps (t\u01b0\u01a1ng \u0111\u01b0\u01a1ng kho\u1ea3ng <span class=\"math-inline\" data-math=\"12.5\" data-index-in-node=\"194\">12.5<\/span> MB\/s) \u0111\u00e3 tr\u1edf n\u00ean qu\u00e1 ch\u1eadm so v\u1edbi nhu c\u1ea7u t\u1ea3i d\u1eef li\u1ec7u l\u1edbn hay xem video \u0111\u1ed9 ph\u00e2n gi\u1ea3i cao. Tuy nhi\u00ean, chu\u1ea9n n\u00e0y kh\u00f4ng h\u1ec1 bi\u1ebfn m\u1ea5t m\u00e0 v\u1eabn gi\u1eef m\u1ed9t vai tr\u00f2 quan tr\u1ecdng trong h\u1ec7 sinh th\u00e1i Internet v\u1ea1n v\u1eadt (IoT). Do c\u00f3 chi ph\u00ed s\u1ea3n xu\u1ea5t th\u1ea5p v\u00e0 ti\u00eau th\u1ee5 \u00edt \u0111i\u1ec7n n\u0103ng, c\u1ed5ng LAN chu\u1ea9n Fast Ethernet v\u1eabn \u0111\u01b0\u1ee3c trang b\u1ecb ph\u1ed5 bi\u1ebfn tr\u00ean c\u00e1c thi\u1ebft b\u1ecb kh\u00f4ng y\u00eau c\u1ea7u b\u0103ng th\u00f4ng cao nh\u01b0 m\u00e1y in v\u0103n ph\u00f2ng, c\u00e1c c\u1ea3m bi\u1ebfn nh\u00e0 th\u00f4ng minh, b\u00f3ng \u0111\u00e8n LED ho\u1eb7c c\u00e1c lo\u1ea1i camera gi\u00e1m s\u00e1t c\u01a1 b\u1ea3n.<\/p>\n<p style=\"text-align: center;\" data-path-to-node=\"5\"><picture><source srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2026\/01\/cong-lan-7.jpg.webp 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2026\/01\/cong-lan-7-300x169.jpg.webp 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2026\/01\/cong-lan-7-768x432.jpg.webp 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" type=\"image\/webp\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-526261 webpexpress-processed\" src=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/01\/cong-lan-7.jpg\" alt=\"cong-lan-la-gi-tim-hieu-tu-a-z-ve-cong-mang-lan-tren-may-tinh-7\" width=\"800\" height=\"450\" srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/01\/cong-lan-7.jpg 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/01\/cong-lan-7-300x169.jpg 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/01\/cong-lan-7-768x432.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\"><\/picture><\/p>\n<h3 data-path-to-node=\"6\">Gigabit Ethernet (1Gbps)<\/h3>\n<p data-path-to-node=\"7\">Gigabit Ethernet (10\/100\/1000 Mbps) hi\u1ec7n l\u00e0 ti\u00eau chu\u1ea9n &#8220;v\u00e0ng&#8221; v\u00e0 ph\u1ed5 bi\u1ebfn nh\u1ea5t tr\u00ean h\u1ea7u h\u1ebft c\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed t\u1eeb Laptop, PC cho \u0111\u1ebfn Smart TV v\u00e0 m\u00e1y ch\u01a1i game Console. V\u1edbi t\u1ed1c \u0111\u1ed9 t\u1ed1i \u0111a \u0111\u1ea1t <span class=\"math-inline\" data-math=\"1\" data-index-in-node=\"192\">1<\/span> Gbps, chu\u1ea9n n\u00e0y cung c\u1ea5p b\u0103ng th\u00f4ng g\u1ea5p 10 l\u1ea7n so v\u1edbi Fast Ethernet, cho ph\u00e9p truy\u1ec1n t\u1ea3i d\u1eef li\u1ec7u m\u01b0\u1ee3t m\u00e0 \u1edf m\u1ee9c <span class=\"math-inline\" data-math=\"125\" data-index-in-node=\"305\">125<\/span>\u00a0MB\/s. \u0110\u00e2y l\u00e0 t\u1ed1c \u0111\u1ed9 l\u00fd t\u01b0\u1edfng \u0111\u1ec3 t\u1eadn d\u1ee5ng t\u1ed1i \u0111a c\u00e1c g\u00f3i c\u01b0\u1edbc Internet c\u00e1p quang t\u1ed1c \u0111\u1ed9 cao c\u1ee7a c\u00e1c nh\u00e0 m\u1ea1ng hi\u1ec7n nay.<\/p>\n<p style=\"text-align: center;\" data-path-to-node=\"7\"><picture><source srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2026\/01\/cong-lan-8.jpg.webp 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2026\/01\/cong-lan-8-300x169.jpg.webp 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2026\/01\/cong-lan-8-768x432.jpg.webp 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" type=\"image\/webp\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-526262 webpexpress-processed\" src=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/01\/cong-lan-8.jpg\" alt=\"cong-lan-la-gi-tim-hieu-tu-a-z-ve-cong-mang-lan-tren-may-tinh-8\" width=\"800\" height=\"450\" srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/01\/cong-lan-8.jpg 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/01\/cong-lan-8-300x169.jpg 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/01\/cong-lan-8-768x432.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\"><\/picture><\/p>\n<p data-path-to-node=\"7\">V\u1edbi m\u1ed9t c\u1ed5ng LAN chu\u1ea9n Gigabit, b\u1ea1n c\u00f3 th\u1ec3 d\u1ec5 d\u00e0ng livestream \u1edf \u0111\u1ed9 ph\u00e2n gi\u1ea3i 4K, t\u1ea3i c\u00e1c t\u1ef1a game n\u1eb7ng h\u00e0ng tr\u0103m GB ch\u1ec9 trong th\u1eddi gian ng\u1eafn ho\u1eb7c th\u1ef1c hi\u1ec7n c\u00e1c cu\u1ed9c h\u1ecdp tr\u1ef1c tuy\u1ebfn v\u1edbi \u0111\u1ed9 tr\u1ec5 c\u1ef1c th\u1ea5p. K\u1ebft h\u1ee3p v\u1edbi c\u00e1p m\u1ea1ng Cat5e ho\u1eb7c Cat6, chu\u1ea9n n\u00e0y mang l\u1ea1i s\u1ef1 c\u00e2n b\u1eb1ng ho\u00e0n h\u1ea3o gi\u1eefa chi ph\u00ed \u0111\u1ea7u t\u01b0 v\u00e0 hi\u1ec7u n\u0103ng s\u1eed d\u1ee5ng, \u0111\u00e1p \u1ee9ng t\u1ed1t cho 90% nhu c\u1ea7u gi\u1ea3i tr\u00ed v\u00e0 l\u00e0m vi\u1ec7c v\u0103n ph\u00f2ng trong n\u0103m 2026.<\/p>\n<h3 data-path-to-node=\"8\">2.5G, 5G, 10G Ethernet<\/h3>\n<p data-path-to-node=\"9\">B\u01b0\u1edbc v\u00e0o k\u1ef7 nguy\u00ean c\u1ee7a d\u1eef li\u1ec7u kh\u1ed5ng l\u1ed3, c\u00e1c chu\u1ea9n Multi-Gigabit nh\u01b0 2.5G, 5G v\u00e0 \u0111\u1eb7c bi\u1ec7t l\u00e0 10G Ethernet (<span class=\"math-inline\" data-math=\"10\" data-index-in-node=\"107\">10<\/span>\u00a0Gbps) \u0111ang d\u1ea7n tr\u1edf th\u00e0nh xu h\u01b0\u1edbng tr\u00ean c\u00e1c d\u00f2ng bo m\u1ea1ch ch\u1ee7 cao c\u1ea5p v\u00e0 m\u00e1y tr\u1ea1m (Workstation). V\u1edbi t\u1ed1c \u0111\u1ed9 l\u00ean t\u1edbi <span class=\"math-inline\" data-math=\"1.25\" data-index-in-node=\"224\">1.25<\/span>\u00a0GB\/s, chu\u1ea9n 10G cho ph\u00e9p sao ch\u00e9p c\u00e1c t\u1ec7p tin video 8K hay c\u00e1c b\u1ed9 th\u01b0 vi\u1ec7n \u1ea3nh kh\u1ed5ng l\u1ed3 ch\u1ec9 trong v\u00e0i gi\u00e2y. \u0110\u00e2y l\u00e0 trang b\u1ecb b\u1eaft bu\u1ed9c cho c\u00e1c chuy\u00ean gia s\u00e1ng t\u1ea1o n\u1ed9i dung, nh\u1eefng ng\u01b0\u1eddi th\u01b0\u1eddng xuy\u00ean l\u00e0m vi\u1ec7c v\u1edbi h\u1ec7 th\u1ed1ng l\u01b0u tr\u1eef m\u1ea1ng (NAS) ho\u1eb7c c\u1ea7n b\u0103ng th\u00f4ng c\u1ef1c l\u1edbn \u0111\u1ec3 \u0111\u1ed3ng b\u1ed9 d\u1eef li\u1ec7u \u0111\u00e1m m\u00e2y.<\/p>\n<p style=\"text-align: center;\" data-path-to-node=\"9\"><picture><source srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2026\/01\/cong-lan-10.jpg.webp 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2026\/01\/cong-lan-10-300x169.jpg.webp 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2026\/01\/cong-lan-10-768x432.jpg.webp 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" type=\"image\/webp\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-526264 webpexpress-processed\" src=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/01\/cong-lan-10.jpg\" alt=\"cong-lan-la-gi-tim-hieu-tu-a-z-ve-cong-mang-lan-tren-may-tinh-10\" width=\"800\" height=\"450\" srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/01\/cong-lan-10.jpg 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/01\/cong-lan-10-300x169.jpg 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/01\/cong-lan-10-768x432.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\"><\/picture><\/p>\n<p data-path-to-node=\"9\">S\u1ef1 b\u00f9ng n\u1ed5 c\u1ee7a WiFi 7 v\u00e0o n\u0103m 2026 c\u0169ng th\u00fac \u0111\u1ea9y vi\u1ec7c ph\u1ed5 c\u1eadp c\u1ed5ng 2.5G tr\u00ean c\u00e1c Router gia \u0111\u00ecnh \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o kh\u00f4ng x\u1ea3y ra hi\u1ec7n t\u01b0\u1ee3ng ngh\u1ebdn c\u1ed5 chai khi truy\u1ec1n t\u1ea3i t\u00edn hi\u1ec7u kh\u00f4ng d\u00e2y t\u1ed1c \u0111\u1ed9 cao. \u0110\u1ec3 v\u1eadn h\u00e0nh \u1ed5n \u0111\u1ecbnh \u1edf m\u1ee9c t\u1ed1c \u0111\u1ed9 n\u00e0y, ng\u01b0\u1eddi d\u00f9ng c\u1ea7n trang b\u1ecb c\u00e1c lo\u1ea1i c\u00e1p m\u1ea1ng chuy\u00ean d\u1ee5ng nh\u01b0 Cat6a ho\u1eb7c Cat7 \u0111\u1ec3 h\u1ea1n ch\u1ebf nhi\u1ec5u v\u00e0 suy hao t\u00edn hi\u1ec7u tr\u00ean kho\u1ea3ng c\u00e1ch xa.<\/p>\n<h2 data-path-to-node=\"40\">Y\u00eau c\u1ea7u \u0111\u1ec3 t\u1ea1o k\u1ebft n\u1ed1i LAN n\u1ed9i b\u1ed9<\/h2>\n<p data-path-to-node=\"41\">\u0110\u1ec3 thi\u1ebft l\u1eadp m\u1ed9t m\u1ea1ng LAN n\u1ed9i b\u1ed9 ho\u1ea1t \u0111\u1ed9ng tr\u01a1n tru qua c\u1ed5ng LAN, b\u1ea1n c\u1ea7n chu\u1ea9n b\u1ecb c\u00e1c y\u1ebfu t\u1ed1 sau:<\/p>\n<ul data-path-to-node=\"42\">\n<li>\n<p data-path-to-node=\"42,0,0\"><b data-path-to-node=\"42,0,0\" data-index-in-node=\"0\">Thi\u1ebft b\u1ecb trung t\u00e2m:<\/b> Th\u01b0\u1eddng l\u00e0 Router ho\u1eb7c Switch. Thi\u1ebft b\u1ecb n\u00e0y \u0111\u00f3ng vai tr\u00f2 nh\u01b0 m\u1ed9t &#8220;nh\u00e0 ga&#8221; \u0111i\u1ec1u ph\u1ed1i d\u1eef li\u1ec7u gi\u1eefa c\u00e1c m\u00e1y t\u00ednh.<\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"42,1,0\"><b data-path-to-node=\"42,1,0\" data-index-in-node=\"0\">C\u00e1p m\u1ea1ng:<\/b> Ch\u1ecdn lo\u1ea1i c\u00e1p ph\u00f9 h\u1ee3p (khuy\u00ean d\u00f9ng t\u1ed1i thi\u1ec3u Cat6 \u0111\u1ec3 \u0111\u1ea1t t\u1ed1c \u0111\u1ed9 Gigabit).<\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"42,2,0\"><b data-path-to-node=\"42,2,0\" data-index-in-node=\"0\">C\u1ed5ng LAN tr\u00ean thi\u1ebft b\u1ecb:<\/b> \u0110\u1ea3m b\u1ea3o c\u00e1c thi\u1ebft b\u1ecb c\u1ee7a b\u1ea1n (PC, Laptop, TV) \u0111\u1ec1u c\u00f3 c\u1ed5ng LAN ho\u1ea1t \u0111\u1ed9ng t\u1ed1t.<\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"42,3,0\"><b data-path-to-node=\"42,3,0\" data-index-in-node=\"0\">C\u1ea5u h\u00ecnh ph\u1ea7n m\u1ec1m:<\/b> Th\u00f4ng th\u01b0\u1eddng, c\u00e1c thi\u1ebft b\u1ecb hi\u1ec7n nay \u0111\u1ec1u t\u1ef1 \u0111\u1ed9ng nh\u1eadn di\u1ec7n IP qua giao th\u1ee9c DHCP. Tuy nhi\u00ean, trong m\u1ed9t s\u1ed1 tr\u01b0\u1eddng h\u1ee3p chuy\u00ean s\u00e2u, b\u1ea1n c\u00f3 th\u1ec3 c\u1ea7n c\u1ea5u h\u00ecnh IP t\u0129nh \u0111\u1ec3 c\u00e1c thi\u1ebft b\u1ecb d\u1ec5 d\u00e0ng t\u00ecm th\u1ea5y nhau.<\/p>\n<\/li>\n<\/ul>\n<p style=\"text-align: center;\"><picture><source srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2026\/01\/cong-lan-2.jpg.webp 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2026\/01\/cong-lan-2-300x169.jpg.webp 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2026\/01\/cong-lan-2-768x432.jpg.webp 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" type=\"image\/webp\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-526256 webpexpress-processed\" src=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/01\/cong-lan-2.jpg\" alt=\"cong-lan-la-gi-tim-hieu-tu-a-z-ve-cong-mang-lan-tren-may-tinh-2\" width=\"800\" height=\"450\" srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/01\/cong-lan-2.jpg 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/01\/cong-lan-2-300x169.jpg 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/01\/cong-lan-2-768x432.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\"><\/picture><\/p>\n<h2 data-path-to-node=\"44\">C\u00f4ng d\u1ee5ng c\u1ee7a m\u1ea1ng LAN v\u00e0 c\u1ed5ng LAN<\/h2>\n<p data-path-to-node=\"45\">Vi\u1ec7c s\u1eed d\u1ee5ng c\u1ed5ng LAN mang l\u1ea1i nhi\u1ec1u l\u1ee3i \u00edch thi\u1ebft th\u1ef1c m\u00e0 \u0111\u00f4i khi ch\u00fang ta v\u00f4 t\u00ecnh b\u1ecf qua:<\/p>\n<ul data-path-to-node=\"46\">\n<li>\n<p data-path-to-node=\"46,0,0\"><b data-path-to-node=\"46,0,0\" data-index-in-node=\"0\">Truy c\u1eadp Internet t\u1ed1c \u0111\u1ed9 cao:<\/b> T\u1eadn d\u1ee5ng t\u1ed1i \u0111a b\u0103ng th\u00f4ng m\u00e0 nh\u00e0 m\u1ea1ng cung c\u1ea5p m\u00e0 kh\u00f4ng lo b\u1ecb hao h\u1ee5t qua s\u00f3ng WiFi.<\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"46,1,0\"><b data-path-to-node=\"46,1,0\" data-index-in-node=\"0\">Chia s\u1ebb d\u1eef li\u1ec7u n\u1ed9i b\u1ed9 c\u1ef1c nhanh:<\/b> Vi\u1ec7c sao ch\u00e9p h\u00e0ng tr\u0103m GB d\u1eef li\u1ec7u gi\u1eefa hai m\u00e1y t\u00ednh qua c\u00e1p LAN nhanh h\u01a1n r\u1ea5t nhi\u1ec1u so v\u1edbi d\u00f9ng USB hay g\u1eedi qua \u0111\u00e1m m\u00e2y.<\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"46,2,0\"><b data-path-to-node=\"46,2,0\" data-index-in-node=\"0\">K\u1ebft n\u1ed1i c\u00e1c thi\u1ebft b\u1ecb ngo\u1ea1i vi:<\/b> D\u00f9ng chung m\u00e1y in, m\u00e1y scan cho c\u1ea3 m\u1ed9t v\u0103n ph\u00f2ng ch\u1ec9 qua m\u1ed9t \u0111\u1ecba ch\u1ec9 m\u1ea1ng duy nh\u1ea5t.<\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"46,3,0\"><b data-path-to-node=\"46,3,0\" data-index-in-node=\"0\">Gi\u1ea3i tr\u00ed \u0111\u1ec9nh cao:<\/b> Ch\u01a1i game online v\u1edbi m\u1ee9c Ping th\u1ea5p nh\u1ea5t, xem phim tr\u1ef1c tuy\u1ebfn \u0111\u1ed9 ph\u00e2n gi\u1ea3i 4K\/8K m\u00e0 kh\u00f4ng bao gi\u1edd g\u1eb7p hi\u1ec7n t\u01b0\u1ee3ng &#8220;buffering&#8221; (xoay v\u00f2ng).<\/p>\n<\/li>\n<\/ul>\n<p style=\"text-align: center;\"><picture><source srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2026\/01\/cong-lan-9.jpg.webp 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2026\/01\/cong-lan-9-300x169.jpg.webp 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2026\/01\/cong-lan-9-768x432.jpg.webp 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" type=\"image\/webp\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-526263 webpexpress-processed\" src=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/01\/cong-lan-9.jpg\" alt=\"cong-lan-la-gi-tim-hieu-tu-a-z-ve-cong-mang-lan-tren-may-tinh-9\" width=\"800\" height=\"450\" srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/01\/cong-lan-9.jpg 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/01\/cong-lan-9-300x169.jpg 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/01\/cong-lan-9-768x432.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\"><\/picture><\/p>\n<h2 data-path-to-node=\"48\">Khi n\u00e0o n\u00ean d\u00f9ng c\u1ed5ng LAN thay v\u00ec WiFi?<\/h2>\n<p data-path-to-node=\"49\">M\u1eb7c d\u00f9 WiFi 7 c\u1ee7a n\u0103m 2026 \u0111\u00e3 r\u1ea5t m\u1ea1nh, nh\u01b0ng b\u1ea1n v\u1eabn n\u00ean \u01b0u ti\u00ean s\u1eed d\u1ee5ng c\u1ed5ng LAN trong c\u00e1c tr\u01b0\u1eddng h\u1ee3p sau:<\/p>\n<ul data-path-to-node=\"50\">\n<li>\n<p data-path-to-node=\"50,0,0\"><b data-path-to-node=\"50,0,0\" data-index-in-node=\"0\">Gaming chuy\u00ean nghi\u1ec7p:<\/b> M\u1ecdi mili gi\u00e2y \u0111\u1ec1u \u0111\u00e1ng gi\u00e1. C\u00e1p LAN gi\u00fap b\u1ea1n lo\u1ea1i b\u1ecf t\u00ecnh tr\u1ea1ng r\u1edbt m\u1ea1ng \u0111\u1ed9t ng\u1ed9t (packet loss).<\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"50,1,0\"><b data-path-to-node=\"50,1,0\" data-index-in-node=\"0\">L\u00e0m vi\u1ec7c t\u1eeb xa\/H\u1ecdp tr\u1ef1c tuy\u1ebfn:<\/b> \u0110\u1ea3m b\u1ea3o h\u00ecnh \u1ea3nh v\u00e0 \u00e2m thanh lu\u00f4n s\u1eafc n\u00e9t, kh\u00f4ng b\u1ecb gi\u1eadt lag khi \u0111ang thuy\u1ebft tr\u00ecnh quan tr\u1ecdng.<\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"50,2,0\"><b data-path-to-node=\"50,2,0\" data-index-in-node=\"0\">Streamer &amp; Content Creator:<\/b> Khi b\u1ea1n c\u1ea7n upload video dung l\u01b0\u1ee3ng l\u1edbn ho\u1eb7c livestream l\u00ean c\u00e1c n\u1ec1n t\u1ea3ng, s\u1ef1 \u1ed5n \u0111\u1ecbnh c\u1ee7a c\u1ed5ng LAN l\u00e0 b\u1eaft bu\u1ed9c.<\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"50,3,0\"><b data-path-to-node=\"50,3,0\" data-index-in-node=\"0\">K\u1ebft n\u1ed1i c\u1ed1 \u0111\u1ecbnh:<\/b> C\u00e1c thi\u1ebft b\u1ecb \u00edt di chuy\u1ec3n nh\u01b0 PC \u0111\u1ec3 b\u00e0n, Smart TV, Console n\u00ean \u0111\u01b0\u1ee3c c\u1eafm d\u00e2y \u0111\u1ec3 gi\u1ea3i ph\u00f3ng b\u0103ng th\u00f4ng WiFi cho c\u00e1c thi\u1ebft b\u1ecb di \u0111\u1ed9ng nh\u01b0 \u0111i\u1ec7n tho\u1ea1i, m\u00e1y t\u00ednh b\u1ea3ng.<\/p>\n<\/li>\n<\/ul>\n<p style=\"text-align: center;\"><picture><source srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2026\/01\/cong-lan-12.jpg.webp 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2026\/01\/cong-lan-12-300x169.jpg.webp 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2026\/01\/cong-lan-12-768x432.jpg.webp 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" type=\"image\/webp\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-526266 webpexpress-processed\" src=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/01\/cong-lan-12.jpg\" alt=\"cong-lan-la-gi-tim-hieu-tu-a-z-ve-cong-mang-lan-tren-may-tinh-12\" width=\"800\" height=\"450\" srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/01\/cong-lan-12.jpg 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/01\/cong-lan-12-300x169.jpg 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/01\/cong-lan-12-768x432.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\"><\/picture><\/p>\n<h2 data-path-to-node=\"52\">T\u1ea1m k\u1ebft<\/h2>\n<p data-path-to-node=\"53\">C\u1ed5ng LAN d\u00f9 l\u00e0 m\u1ed9t c\u00f4ng ngh\u1ec7 c\u00f3 tu\u1ed5i \u0111\u1eddi kh\u00e1 l\u00e2u nh\u01b0ng v\u1eabn gi\u1eef vai tr\u00f2 x\u01b0\u01a1ng s\u1ed1ng trong h\u1ec7 th\u1ed1ng m\u1ea1ng hi\u1ec7n \u0111\u1ea1i. Hi\u1ec3u r\u00f5 v\u1ec1 n\u00f3 gi\u00fap b\u1ea1n t\u1ed1i \u01b0u h\u00f3a t\u1ed1c \u0111\u1ed9 l\u00e0m vi\u1ec7c v\u00e0 gi\u1ea3i tr\u00ed m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3 nh\u1ea5t. \u0110\u1ec3 c\u00f3 tr\u1ea3i nghi\u1ec7m m\u1ea1ng t\u1ed1t nh\u1ea5t, m\u1ed9t chi\u1ebfc m\u00e1y t\u00ednh c\u00f3 bo m\u1ea1ch ch\u1ee7 h\u1ed7 tr\u1ee3 chu\u1ea9n LAN t\u1ed1c \u0111\u1ed9 cao l\u00e0 \u0111i\u1ec1u c\u1ef1c k\u1ef3 c\u1ea7n thi\u1ebft. \u0110\u1eebng qu\u00ean gh\u00e9 th\u0103m Ho\u00e0ng H\u00e0 Mobile \u0111\u1ec3 l\u1ef1a ch\u1ecdn cho m\u00ecnh nh\u1eefng m\u1eabu Laptop, PC hay c\u00e1c ph\u1ee5 ki\u1ec7n m\u1ea1ng ch\u00ednh h\u00e3ng v\u1edbi gi\u00e1 t\u1ed1t nh\u1ea5t n\u0103m 2026. T\u1ea1i <a href=\"https:\/\/hoanghamobile.com\/\">Ho\u00e0ng H\u00e0 Mobile<\/a>, ch\u00fang t\u00f4i lu\u00f4n s\u1eb5n s\u00e0ng h\u1ed7 tr\u1ee3 b\u1ea1n nh\u1eefng gi\u1ea3i ph\u00e1p c\u00f4ng ngh\u1ec7 ti\u00ean ti\u1ebfn nh\u1ea5t \u0111\u1ec3 cu\u1ed9c s\u1ed1ng s\u1ed1 c\u1ee7a b\u1ea1n lu\u00f4n di\u1ec5n ra m\u01b0\u1ee3t m\u00e0.<\/p>\n<p data-path-to-node=\"54\"><em><strong>XEM TH\u00caM:<\/strong><\/em><\/p>\n<ul>\n<li data-path-to-node=\"54\"><strong><a href=\"https:\/\/hoanghamobile.com\/tin-tuc\/ion-am-la-gi\/\">Ion \u00e2m l\u00e0 g\u00ec? L\u1ee3i \u00edch v\u00e0 \u1ee9ng d\u1ee5ng c\u1ee7a ion \u00e2m trong \u0111\u1eddi s\u1ed1ng<\/a><\/strong><\/li>\n<li data-path-to-node=\"54\"><strong><a href=\"https:\/\/hoanghamobile.com\/tin-tuc\/khu-vuc-ar-la-gi\/\">Khu v\u1ef1c AR l\u00e0 g\u00ec? T\u00ecm hi\u1ec3u AR Zone tr\u00ean \u0111i\u1ec7n tho\u1ea1i Samsung t\u1eeb A\u2013Z<\/a><\/strong><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Trong k\u1ef7 nguy\u00ean Internet v\u1ea1n v\u1eadt (IoT) v\u00e0 t\u1ed1c \u0111\u1ed9 m\u1ea1ng 6G \u0111ang b\u1eaft \u0111\u1ea7u nhen nh\u00f3m v\u00e0o n\u0103m 2026, ch\u00fang ta th\u01b0\u1eddng nghe nhi\u1ec1u v\u1ec1 WiFi v\u00e0 c\u00e1c k\u1ebft n\u1ed1i kh\u00f4ng d\u00e2y ti\u1ec7n l\u1ee3i. Tuy nhi\u00ean, \u0111\u1ed1i v\u1edbi nh\u1eefng ng\u01b0\u1eddi l\u00e0m \u0111\u1ed3 h\u1ecda chuy\u00ean nghi\u1ec7p, c\u00e1c game th\u1ee7 thi \u0111\u1ea5u eSports hay nh\u1eefng k\u1ef9 [&hellip;]<\/p>\n","protected":false},"author":75,"featured_media":526254,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[29235,3910],"tags":[],"class_list":["post-525921","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-goc-to-mo","category-kham-pha"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v24.2 (Yoast SEO v24.2) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>C\u1ed5ng LAN l\u00e0 g\u00ec? T\u00ecm hi\u1ec3u t\u1eeb A\u2013Z v\u1ec1 c\u1ed5ng m\u1ea1ng LAN tr\u00ean m\u00e1y t\u00ednh<\/title>\n<meta name=\"description\" content=\"Kh\u00e1m ph\u00e1 chi ti\u1ebft c\u1ed5ng LAN l\u00e0 g\u00ec, c\u1ea5u t\u1ea1o, t\u1ed1c \u0111\u1ed9 ph\u1ed5 bi\u1ebfn v\u00e0 l\u00fd do t\u1ea1i sao k\u1ebft n\u1ed1i c\u00f3 d\u00e2y v\u1eabn l\u00e0 l\u1ef1a ch\u1ecdn s\u1ed1 1 cho s\u1ef1 \u1ed5n \u0111\u1ecbnh v\u00e0o n\u0103m 2026.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/hoanghamobile.com\/tin-tuc\/cong-lan\/\" \/>\n<meta property=\"og:locale\" content=\"vi_VN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"C\u1ed5ng LAN l\u00e0 g\u00ec? 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