{"id":477405,"date":"2023-08-09T09:14:25","date_gmt":"2023-08-09T09:14:25","guid":{"rendered":""},"modified":"2023-09-05T11:14:40","modified_gmt":"2023-09-05T11:14:40","slug":"half-duplex","status":"publish","type":"wiki","link":"https:\/\/oneproxy.pro\/vn\/wiki\/half-duplex\/","title":{"rendered":"B\u00e1n song c\u00f4ng"},"content":{"rendered":"<p>Half duplex l\u00e0 m\u1ed9t ch\u1ebf \u0111\u1ed9 li\u00ean l\u1ea1c trong m\u1ea1ng vi\u1ec5n th\u00f4ng v\u00e0 m\u00e1y t\u00ednh, n\u01a1i d\u1eef li\u1ec7u c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c truy\u1ec1n theo c\u1ea3 hai h\u01b0\u1edbng qua m\u1ed9t k\u00eanh chia s\u1ebb, nh\u01b0ng kh\u00f4ng ph\u1ea3i \u0111\u1ed3ng th\u1eddi. N\u00f3 cho ph\u00e9p truy\u1ec1n d\u1eef li\u1ec7u theo h\u01b0\u1edbng g\u1eedi ho\u1eb7c nh\u1eadn, nh\u01b0ng kh\u00f4ng \u0111\u1ed3ng th\u1eddi theo c\u1ea3 hai h\u01b0\u1edbng. Ch\u1ebf \u0111\u1ed9 n\u00e0y tr\u00e1i ng\u01b0\u1ee3c v\u1edbi ch\u1ebf \u0111\u1ed9 song c\u00f4ng ho\u00e0n to\u00e0n, trong \u0111\u00f3 d\u1eef li\u1ec7u c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c g\u1eedi v\u00e0 nh\u1eadn \u0111\u1ed3ng th\u1eddi.<\/p>\n<h2>L\u1ecbch s\u1eed ngu\u1ed3n g\u1ed1c c\u1ee7a Half duplex v\u00e0 l\u1ea7n \u0111\u1ea7u ti\u00ean \u0111\u1ec1 c\u1eadp \u0111\u1ebfn n\u00f3<\/h2>\n<p>Kh\u00e1i ni\u1ec7m song c\u00f4ng b\u1eaft ngu\u1ed3n t\u1eeb nh\u1eefng ng\u00e0y \u0111\u1ea7u c\u1ee7a \u0111i\u1ec7n b\u00e1o v\u00e0 \u0111i\u1ec7n tho\u1ea1i khi vi\u1ec7c li\u00ean l\u1ea1c \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng c\u00e1c m\u1ea1ch \u0111i\u1ec7n \u0111\u01a1n gi\u1ea3n. V\u00e0o cu\u1ed1i th\u1ebf k\u1ef7 19, c\u00e1c h\u1ec7 th\u1ed1ng li\u00ean l\u1ea1c s\u1eed d\u1ee5ng c\u00f4ng ngh\u1ec7 song c\u00f4ng, cho ph\u00e9p ng\u01b0\u1eddi v\u1eadn h\u00e0nh truy\u1ec1n v\u00e0 nh\u1eadn tin nh\u1eafn lu\u00e2n phi\u00ean b\u1eb1ng m\u00e3 Morse. L\u1ea7n \u0111\u1ea7u ti\u00ean \u0111\u1ec1 c\u1eadp \u0111\u1ebfn b\u00e1n song c\u00f4ng trong t\u00e0i li\u1ec7u c\u00f3 th\u1ec3 b\u1eaft ngu\u1ed3n t\u1eeb c\u00e1c s\u00e1ch h\u01b0\u1edbng d\u1eabn s\u1eed d\u1ee5ng \u0111i\u1ec7n b\u00e1o v\u00e0 b\u1eb1ng s\u00e1ng ch\u1ebf ban \u0111\u1ea7u.<\/p>\n<h2>Th\u00f4ng tin chi ti\u1ebft v\u1ec1 Half duplex. M\u1edf r\u1ed9ng ch\u1ee7 \u0111\u1ec1 Half duplex.<\/h2>\n<p>Giao ti\u1ebfp b\u00e1n song c\u00f4ng d\u1ef1a tr\u00ean m\u1ed9t k\u00eanh chia s\u1ebb duy nh\u1ea5t \u0111\u1ec3 truy\u1ec1n v\u00e0 nh\u1eadn. Khi m\u1ed9t thi\u1ebft b\u1ecb mu\u1ed1n truy\u1ec1n d\u1eef li\u1ec7u, tr\u01b0\u1edbc ti\u00ean n\u00f3 ph\u1ea3i ki\u1ec3m tra xem k\u00eanh c\u00f3 \u1edf tr\u1ea1ng th\u00e1i r\u1ea3nh hay kh\u00f4ng. N\u1ebfu \u0111\u00fang nh\u01b0 v\u1eady, thi\u1ebft b\u1ecb c\u00f3 th\u1ec3 ti\u1ebfn h\u00e0nh truy\u1ec1n. Tuy nhi\u00ean, trong qu\u00e1 tr\u00ecnh truy\u1ec1n, thi\u1ebft b\u1ecb kh\u00f4ng th\u1ec3 nh\u1eadn b\u1ea5t k\u1ef3 d\u1eef li\u1ec7u n\u00e0o t\u1eeb c\u00e1c thi\u1ebft b\u1ecb kh\u00e1c tr\u00ean c\u00f9ng k\u00eanh.<\/p>\n<p>Sau khi qu\u00e1 tr\u00ecnh truy\u1ec1n d\u1eef li\u1ec7u ho\u00e0n t\u1ea5t, k\u00eanh s\u1ebd c\u00f3 s\u1eb5n \u0111\u1ec3 c\u00e1c thi\u1ebft b\u1ecb kh\u00e1c truy\u1ec1n t\u1ea3i. Ch\u1ebf \u0111\u1ed9 ho\u1ea1t \u0111\u1ed9ng n\u00e0y g\u00e2y ra s\u1ef1 ch\u1eadm tr\u1ec5 c\u1ed1 h\u1eefu trong giao ti\u1ebfp v\u00ec c\u00e1c thi\u1ebft b\u1ecb ph\u1ea3i \u0111\u1ee3i \u0111\u1ebfn l\u01b0\u1ee3t truy\u1ec1n v\u00e0 nh\u1eadn d\u1eef li\u1ec7u.<\/p>\n<h2>C\u1ea5u tr\u00fac b\u00ean trong c\u1ee7a Half duplex. C\u00e1ch th\u1ee9c ho\u1ea1t \u0111\u1ed9ng c\u1ee7a Half-duplex.<\/h2>\n<p>C\u1ea5u tr\u00fac b\u00ean trong c\u1ee7a giao ti\u1ebfp b\u00e1n song c\u00f4ng ph\u1ee5 thu\u1ed9c v\u00e0o c\u00f4ng ngh\u1ec7 c\u01a1 b\u1ea3n \u0111ang \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng. Trong c\u00e1c m\u1ea1ng c\u00f3 d\u00e2y, ch\u1eb3ng h\u1ea1n nh\u01b0 Ethernet, ho\u1ea1t \u0111\u1ed9ng b\u00e1n song c\u00f4ng \u0111\u1ea1t \u0111\u01b0\u1ee3c b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng m\u1ed9t k\u00eanh v\u1eadt l\u00fd duy nh\u1ea5t v\u1edbi lu\u1ed3ng d\u1eef li\u1ec7u hai chi\u1ec1u. Khi c\u00e1c thi\u1ebft b\u1ecb \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i v\u1edbi m\u1ea1ng truy\u1ec1n d\u1eef li\u1ec7u, t\u00edn hi\u1ec7u \u0111i\u1ec7n s\u1ebd truy\u1ec1n theo c\u1ea3 hai h\u01b0\u1edbng d\u1ecdc theo m\u00f4i tr\u01b0\u1eddng d\u00f9ng chung.<\/p>\n<p>Trong truy\u1ec1n th\u00f4ng kh\u00f4ng d\u00e2y, b\u00e1n song c\u00f4ng th\u01b0\u1eddng \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n b\u1eb1ng k\u1ef9 thu\u1eadt ph\u00e2n chia th\u1eddi gian. C\u00e1c thi\u1ebft b\u1ecb thay phi\u00ean nhau truy\u1ec1n v\u00e0 nh\u1eadn d\u1eef li\u1ec7u trong c\u00e1c kho\u1ea3ng th\u1eddi gian \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh tr\u01b0\u1edbc. Ph\u01b0\u01a1ng ph\u00e1p n\u00e0y \u0111\u1ea3m b\u1ea3o r\u1eb1ng kh\u00f4ng c\u00f3 hai thi\u1ebft b\u1ecb n\u00e0o truy\u1ec1n \u0111\u1ed3ng th\u1eddi, ng\u0103n ng\u1eeba xung \u0111\u1ed9t v\u00e0 \u0111\u1ea3m b\u1ea3o quy\u1ec1n truy c\u1eadp c\u00f4ng b\u1eb1ng v\u00e0o ph\u01b0\u01a1ng ti\u1ec7n kh\u00f4ng d\u00e2y d\u00f9ng chung.<\/p>\n<h2>Ph\u00e2n t\u00edch c\u00e1c t\u00ednh n\u0103ng ch\u00ednh c\u1ee7a Half duplex.<\/h2>\n<p>Giao ti\u1ebfp b\u00e1n song c\u00f4ng cung c\u1ea5p m\u1ed9t s\u1ed1 t\u00ednh n\u0103ng ch\u00ednh:<\/p>\n<ol>\n<li>\n<p><strong>S\u1ef1 \u0111\u01a1n gi\u1ea3n<\/strong>: Giao ti\u1ebfp b\u00e1n song c\u00f4ng y\u00eau c\u1ea7u \u00edt t\u00e0i nguy\u00ean v\u00e0 ph\u1ea7n c\u1ee9ng h\u01a1n so v\u1edbi song c\u00f4ng ho\u00e0n to\u00e0n, khi\u1ebfn n\u00f3 tr\u1edf th\u00e0nh gi\u1ea3i ph\u00e1p ti\u1ebft ki\u1ec7m chi ph\u00ed cho m\u1ed9t s\u1ed1 \u1ee9ng d\u1ee5ng nh\u1ea5t \u0111\u1ecbnh.<\/p>\n<\/li>\n<li>\n<p><strong>Tr\u00e1nh va ch\u1ea1m<\/strong>: Trong h\u1ec7 th\u1ed1ng b\u00e1n song c\u00f4ng, nguy c\u01a1 xung \u0111\u1ed9t d\u1eef li\u1ec7u s\u1ebd gi\u1ea3m do c\u00e1c thi\u1ebft b\u1ecb truy\u1ec1n t\u1ea3i t\u1eebng c\u00e1i m\u1ed9t.<\/p>\n<\/li>\n<li>\n<p><strong>Th\u00edch h\u1ee3p cho giao ti\u1ebfp \u0111\u01a1n gi\u1ea3n<\/strong>: N\u00f3 r\u1ea5t ph\u00f9 h\u1ee3p cho c\u00e1c \u1ee9ng d\u1ee5ng kh\u00f4ng c\u1ea7n thi\u1ebft ph\u1ea3i li\u00ean l\u1ea1c hai chi\u1ec1u \u0111\u1ed3ng th\u1eddi, ch\u1eb3ng h\u1ea1n nh\u01b0 b\u1ed9 \u0111\u00e0m, m\u1ea1ng Ethernet \u0111\u1eddi \u0111\u1ea7u v\u00e0 m\u1ed9t s\u1ed1 c\u00f4ng ngh\u1ec7 kh\u00f4ng d\u00e2y.<\/p>\n<\/li>\n<\/ol>\n<h2>C\u00e1c lo\u1ea1i b\u00e1n song c\u00f4ng<\/h2>\n<p>B\u00e1n song c\u00f4ng c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c ph\u00e2n th\u00e0nh hai lo\u1ea1i ch\u00ednh d\u1ef1a tr\u00ean \u1ee9ng d\u1ee5ng c\u1ee7a ch\u00fang:<\/p>\n<table>\n<thead>\n<tr>\n<th><strong>Ki\u1ec3u<\/strong><\/th>\n<th><strong>S\u1ef1 mi\u00eau t\u1ea3<\/strong><\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>1. B\u00e1n song c\u00f4ng c\u00f3 d\u00e2y<\/td>\n<td>\u0110\u01b0\u1ee3c tri\u1ec3n khai trong c\u00e1c m\u1ea1ng c\u00f3 d\u00e2y, ch\u1eb3ng h\u1ea1n nh\u01b0 Ethernet, s\u1eed d\u1ee5ng c\u00e1p d\u00f9ng chung. D\u1eef li\u1ec7u c\u00f3 th\u1ec3 ch\u1ea3y theo c\u1ea3 hai h\u01b0\u1edbng nh\u01b0ng kh\u00f4ng \u0111\u1ed3ng th\u1eddi.<\/td>\n<\/tr>\n<tr>\n<td>2. B\u00e1n song c\u00f4ng kh\u00f4ng d\u00e2y<\/td>\n<td>S\u1eed d\u1ee5ng c\u00e1c k\u00eanh kh\u00f4ng d\u00e2y v\u00e0 k\u1ef9 thu\u1eadt ph\u00e2n chia th\u1eddi gian \u0111\u1ec3 lu\u00e2n phi\u00ean gi\u1eefa truy\u1ec1n v\u00e0 nh\u1eadn d\u1eef li\u1ec7u.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>C\u00e1ch s\u1eed d\u1ee5ng Half duplex, c\u00e1c v\u1ea5n \u0111\u1ec1 v\u00e0 gi\u1ea3i ph\u00e1p li\u00ean quan \u0111\u1ebfn vi\u1ec7c s\u1eed d\u1ee5ng.<\/h2>\n<p>Half duplex t\u00ecm th\u1ea5y \u1ee9ng d\u1ee5ng trong nhi\u1ec1u t\u00ecnh hu\u1ed1ng kh\u00e1c nhau:<\/p>\n<ol>\n<li>\n<p><strong>M\u00e1y b\u1ed9 \u0111\u00e0m<\/strong>: Trong b\u1ed9 \u0111\u00e0m v\u00e0 c\u00e1c thi\u1ebft b\u1ecb b\u1ea5m \u0111\u1ec3 n\u00f3i kh\u00e1c, giao ti\u1ebfp b\u00e1n song c\u00f4ng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng. Ng\u01b0\u1eddi d\u00f9ng nh\u1ea5n n\u00fat \u0111\u1ec3 n\u00f3i v\u00e0 th\u1ea3 ra \u0111\u1ec3 nghe.<\/p>\n<\/li>\n<li>\n<p><strong>M\u1ea1ng Ethernet s\u1edbm<\/strong>: M\u1ed9t s\u1ed1 m\u1ea1ng Ethernet \u0111\u1eddi \u0111\u1ea7u s\u1eed d\u1ee5ng ch\u1ebf \u0111\u1ed9 b\u00e1n song c\u00f4ng \u0111\u1ec3 k\u1ebft n\u1ed1i c\u00e1c thi\u1ebft b\u1ecb v\u1edbi c\u00e1p \u0111\u1ed3ng tr\u1ee5c d\u00f9ng chung.<\/p>\n<\/li>\n<li>\n<p><strong>Truy\u1ec1n th\u00f4ng v\u00f4 tuy\u1ebfn<\/strong>: M\u1ed9t s\u1ed1 h\u1ec7 th\u1ed1ng li\u00ean l\u1ea1c v\u00f4 tuy\u1ebfn nh\u1ea5t \u0111\u1ecbnh s\u1eed d\u1ee5ng ch\u1ebf \u0111\u1ed9 b\u00e1n song c\u00f4ng, \u0111\u1ea3m b\u1ea3o m\u1ed7i l\u1ea7n ch\u1ec9 c\u00f3 m\u1ed9t b\u00ean truy\u1ec1n \u0111\u1ec3 tr\u00e1nh nhi\u1ec5u.<\/p>\n<\/li>\n<\/ol>\n<p>Nh\u1eefng th\u00e1ch th\u1ee9c v\u1edbi song c\u00f4ng m\u1ed9t n\u1eeda bao g\u1ed3m:<\/p>\n<ul>\n<li>\n<p><strong>Hai m\u1eb7t kh\u00f4ng kh\u1edbp<\/strong>: Trong c\u00e1c m\u1ea1ng h\u1ed7n h\u1ee3p trong \u0111\u00f3 m\u1ed9t s\u1ed1 thi\u1ebft b\u1ecb \u0111\u01b0\u1ee3c \u0111\u1eb7t \u1edf ch\u1ebf \u0111\u1ed9 song c\u00f4ng ho\u00e0n to\u00e0n v\u00e0 c\u00e1c thi\u1ebft b\u1ecb kh\u00e1c \u1edf ch\u1ebf \u0111\u1ed9 b\u00e1n song c\u00f4ng, vi\u1ec7c kh\u00f4ng kh\u1edbp song c\u00f4ng c\u00f3 th\u1ec3 g\u00e2y ra s\u1ef1 c\u1ed1 giao ti\u1ebfp. C\u1ea5u h\u00ecnh v\u00e0 qu\u1ea3n l\u00fd m\u1ea1ng ph\u00f9 h\u1ee3p l\u00e0 r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 tr\u00e1nh nh\u1eefng v\u1ea5n \u0111\u1ec1 nh\u01b0 v\u1eady.<\/p>\n<\/li>\n<li>\n<p><strong>S\u1ef1 va ch\u1ea1m<\/strong>: M\u1eb7c d\u00f9 b\u00e1n song c\u00f4ng l\u00e0m gi\u1ea3m kh\u1ea3 n\u0103ng xung \u0111\u1ed9t nh\u01b0ng ch\u00fang v\u1eabn c\u00f3 th\u1ec3 x\u1ea3y ra, d\u1eabn \u0111\u1ebfn vi\u1ec7c truy\u1ec1n l\u1ea1i v\u00e0 suy gi\u1ea3m hi\u1ec7u su\u1ea5t.<\/p>\n<\/li>\n<\/ul>\n<h2>C\u00e1c \u0111\u1eb7c \u0111i\u1ec3m ch\u00ednh v\u00e0 c\u00e1c so s\u00e1nh kh\u00e1c v\u1edbi c\u00e1c thu\u1eadt ng\u1eef t\u01b0\u01a1ng t\u1ef1 d\u01b0\u1edbi d\u1ea1ng b\u1ea3ng v\u00e0 danh s\u00e1ch.<\/h2>\n<table>\n<thead>\n<tr>\n<th><strong>\u0111\u1eb7c tr\u01b0ng<\/strong><\/th>\n<th><strong>B\u00e1n song c\u00f4ng<\/strong><\/th>\n<th><strong>Song c\u00f4ng ho\u00e0n to\u00e0n<\/strong><\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Truy\u1ec1n d\u1eef li\u1ec7u<\/td>\n<td>M\u1ed9t h\u01b0\u1edbng t\u1ea1i m\u1ed9t th\u1eddi \u0111i\u1ec3m<\/td>\n<td>Hai chi\u1ec1u \u0111\u1ed3ng th\u1eddi<\/td>\n<\/tr>\n<tr>\n<td>C\u00e1ch s\u1eed d\u1ee5ng k\u00eanh<\/td>\n<td>K\u00eanh chia s\u1ebb<\/td>\n<td>K\u00eanh chuy\u00ean d\u1ee5ng<\/td>\n<\/tr>\n<tr>\n<td>\u0110\u1ed9 ph\u1ee9c t\u1ea1p<\/td>\n<td>\u0110\u01a1n gi\u1ea3n<\/td>\n<td>Ph\u1ee9c t\u1ea1p h\u01a1n<\/td>\n<\/tr>\n<tr>\n<td>Th\u00f4ng l\u01b0\u1ee3ng<\/td>\n<td>Th\u1ea5p h\u01a1n<\/td>\n<td>Cao h\u01a1n<\/td>\n<\/tr>\n<tr>\n<td>S\u1ef1 va ch\u1ea1m<\/td>\n<td>Kh\u1ea3 thi<\/td>\n<td>tr\u00e1nh \u0111\u01b0\u1ee3c<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>Quan \u0111i\u1ec3m v\u00e0 c\u00f4ng ngh\u1ec7 c\u1ee7a t\u01b0\u01a1ng lai li\u00ean quan \u0111\u1ebfn Half duplex.<\/h2>\n<p>Khi c\u00f4ng ngh\u1ec7 ti\u1ebfn b\u1ed9, giao ti\u1ebfp b\u00e1n song c\u00f4ng c\u00f3 th\u1ec3 tr\u1edf n\u00ean \u00edt ph\u1ed5 bi\u1ebfn h\u01a1n trong m\u1ed9t s\u1ed1 l\u0129nh v\u1ef1c nh\u1ea5t \u0111\u1ecbnh. C\u00e1c c\u00f4ng ngh\u1ec7 kh\u00f4ng d\u00e2y song c\u00f4ng v\u00e0 ti\u00ean ti\u1ebfn, nh\u01b0 5G tr\u1edf l\u00ean, cung c\u1ea5p th\u00f4ng l\u01b0\u1ee3ng cao h\u01a1n v\u00e0 \u0111\u1ed9 tr\u1ec5 th\u1ea5p h\u01a1n, khi\u1ebfn ch\u00fang ph\u00f9 h\u1ee3p h\u01a1n v\u1edbi nhi\u1ec1u \u1ee9ng d\u1ee5ng hi\u1ec7n \u0111\u1ea1i.<\/p>\n<p>Tuy nhi\u00ean, b\u00e1n song c\u00f4ng c\u00f3 th\u1ec3 s\u1ebd ti\u1ebfp t\u1ee5c \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c t\u00ecnh hu\u1ed1ng m\u00e0 hi\u1ec7u qu\u1ea3 chi ph\u00ed v\u00e0 t\u00ednh \u0111\u01a1n gi\u1ea3n l\u00e0 t\u1ed1i quan tr\u1ecdng, ch\u1eb3ng h\u1ea1n nh\u01b0 trong m\u1ed9t s\u1ed1 \u1ee9ng d\u1ee5ng c\u00f4ng nghi\u1ec7p, h\u1ec7 th\u1ed1ng c\u0169 v\u00e0 truy\u1ec1n th\u00f4ng kh\u00f4ng d\u00e2y c\u1ee5 th\u1ec3.<\/p>\n<h2>C\u00e1ch s\u1eed d\u1ee5ng ho\u1eb7c li\u00ean k\u1ebft m\u00e1y ch\u1ee7 proxy v\u1edbi Half duplex.<\/h2>\n<p>M\u00e1y ch\u1ee7 proxy \u0111\u00f3ng m\u1ed9t vai tr\u00f2 quan tr\u1ecdng trong vi\u1ec7c n\u00e2ng cao hi\u1ec7u qu\u1ea3 v\u00e0 b\u1ea3o m\u1eadt c\u1ee7a truy\u1ec1n th\u00f4ng m\u1ea1ng. M\u1eb7c d\u00f9 b\u1ea3n th\u00e2n c\u00e1c m\u00e1y ch\u1ee7 proxy kh\u00f4ng \u0111\u01b0\u1ee3c li\u00ean k\u1ebft tr\u1ef1c ti\u1ebfp v\u1edbi ch\u1ebf \u0111\u1ed9 b\u00e1n song c\u00f4ng nh\u01b0ng ch\u00fang c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c m\u1ea1ng s\u1eed d\u1ee5ng c\u00f4ng ngh\u1ec7 b\u00e1n song c\u00f4ng \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c nhi\u1ec1u m\u1ee5c ti\u00eau kh\u00e1c nhau:<\/p>\n<ol>\n<li>\n<p><strong>B\u1ed9 nh\u1edb \u0111\u1ec7m<\/strong>: M\u00e1y ch\u1ee7 proxy c\u00f3 th\u1ec3 l\u01b0u v\u00e0o b\u1ed9 nh\u1edb \u0111\u1ec7m n\u1ed9i dung \u0111\u01b0\u1ee3c truy c\u1eadp th\u01b0\u1eddng xuy\u00ean, gi\u1ea3m nhu c\u1ea7u g\u1eedi y\u00eau c\u1ea7u th\u01b0\u1eddng xuy\u00ean \u0111\u1ebfn m\u00e1y ch\u1ee7 b\u00ean ngo\u00e0i, t\u1eeb \u0111\u00f3 t\u1ed1i \u01b0u h\u00f3a hi\u1ec7u su\u1ea5t m\u1ea1ng.<\/p>\n<\/li>\n<li>\n<p><strong>C\u00e2n b\u1eb1ng t\u1ea3i<\/strong>: M\u00e1y ch\u1ee7 proxy c\u00f3 th\u1ec3 ph\u00e2n ph\u1ed1i c\u00e1c y\u00eau c\u1ea7u \u0111\u1ebfn gi\u1eefa nhi\u1ec1u m\u00e1y ch\u1ee7, c\u00e2n b\u1eb1ng t\u1ea3i v\u00e0 ng\u0103n ch\u1eb7n t\u00ecnh tr\u1ea1ng qu\u00e1 t\u1ea3i tr\u00ean m\u1ed9t m\u00e1y ch\u1ee7.<\/p>\n<\/li>\n<li>\n<p><strong>B\u1ea3o v\u1ec7<\/strong>: Proxy c\u00f3 th\u1ec3 \u0111\u00f3ng vai tr\u00f2 trung gian gi\u1eefa m\u00e1y kh\u00e1ch v\u00e0 m\u00e1y ch\u1ee7, th\u00eam l\u1edbp b\u1ea3o m\u1eadt b\u1eb1ng c\u00e1ch \u1ea9n \u0111\u1ecba ch\u1ec9 IP c\u1ee7a m\u00e1y kh\u00e1ch v\u00e0 l\u1ecdc l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp \u0111\u1ed9c h\u1ea1i.<\/p>\n<\/li>\n<\/ol>\n<h2>Li\u00ean k\u1ebft li\u00ean quan<\/h2>\n<p>\u0110\u1ec3 bi\u1ebft th\u00eam th\u00f4ng tin v\u1ec1 Half duplex, b\u1ea1n c\u00f3 th\u1ec3 tham kh\u1ea3o c\u00e1c t\u00e0i nguy\u00ean sau:<\/p>\n<ul>\n<li><a href=\"https:\/\/www.cisco.com\/c\/en\/us\/support\/docs\/lan-switching\/ethernet\/17056-741-4.html\" target=\"_new\" rel=\"noopener nofollow\">Li\u00ean k\u1ebft 1: T\u00ecm hi\u1ec3u v\u1ec1 giao ti\u1ebfp Half-Duplex v\u00e0 Full-Duplex<\/a><\/li>\n<li><a href=\"https:\/\/www.geeksforgeeks.org\/half-duplex-vs-full-duplex-networking\/\" target=\"_new\" rel=\"noopener nofollow\">Li\u00ean k\u1ebft 2: Gi\u1edbi thi\u1ec7u v\u1ec1 M\u1ea1ng \u2013 Half Duplex so v\u1edbi Full Duplex<\/a><\/li>\n<li><a href=\"https:\/\/www.tutorialspoint.com\/half-duplex-vs-full-duplex-in-communication\" target=\"_new\" rel=\"noopener nofollow\">Li\u00ean k\u1ebft 3: Half Duplex v\u00e0 Full Duplex trong giao ti\u1ebfp<\/a><\/li>\n<\/ul>","protected":false},"featured_media":0,"menu_order":0,"template":"","meta":{"_acf_changed":false,"content-type":"","inline_featured_image":false,"footnotes":""},"class_list":["post-477405","wiki","type-wiki","status-publish","hentry"],"acf":{"faq_title":"Frequently Asked Questions about <mark>Half Duplex: Unraveling the Communication Paradigm<\/mark>","faq_items":[{"question":"What is half duplex communication?","answer":"<p>Half duplex communication is a mode of data transmission in telecommunications and computer networking, where data can be sent and received over a shared channel, but not simultaneously. It allows data flow in one direction at a time, in contrast to full duplex, which allows simultaneous two-way communication.<\/p>"},{"question":"How did half duplex communication originate?","answer":"<p>The concept of half duplex dates back to the early days of telegraphy and telephony when communication systems used simple electrical circuits. The first mention of half duplex can be found in early telegraphy manuals and patents.<\/p>"},{"question":"How does half duplex communication work?","answer":"<p>In half duplex communication, devices use a shared channel for both transmission and reception. Devices take turns transmitting and receiving data. When one device transmits, others must wait until the channel becomes available.<\/p>"},{"question":"What are the key features of half duplex?","answer":"<p>The key features of half duplex include its simplicity, collision avoidance, and suitability for applications where simultaneous two-way communication is not essential.<\/p>"},{"question":"What types of half duplex exist?","answer":"<p>Half duplex communication can be categorized into two main types:<\/p><ol><li>Wired Half Duplex: Implemented in wired networks, such as Ethernet, using shared cables.<\/li><li>Wireless Half Duplex: Utilizes wireless channels and time-division techniques to alternate between transmitting and receiving data.<\/li><\/ol>"},{"question":"What are the applications of half duplex communication?","answer":"<p>Half duplex finds application in various scenarios, including:<\/p><ul><li>Walkie-Talkies and push-to-talk devices<\/li><li>Early Ethernet networks<\/li><li>Certain radio communication systems<\/li><\/ul>"},{"question":"What are the challenges associated with half duplex?","answer":"<p>Challenges with half duplex include duplex mismatch in mixed networks, potential collisions, and occasional performance degradation due to retransmissions.<\/p>"},{"question":"How does half duplex compare to full duplex?","answer":"<table><thead><tr><th><strong>Characteristic<\/strong><\/th><th><strong>Half Duplex<\/strong><\/th><th><strong>Full Duplex<\/strong><\/th><\/tr><\/thead><tbody><tr><td>Data Transmission<\/td><td>One direction at a time<\/td><td>Simultaneous two-way communication<\/td><\/tr><tr><td>Channel Usage<\/td><td>Shared channel<\/td><td>Dedicated channel<\/td><\/tr><tr><td>Complexity<\/td><td>Simple<\/td><td>More complex<\/td><\/tr><tr><td>Throughput<\/td><td>Lower<\/td><td>Higher<\/td><\/tr><tr><td>Collisions<\/td><td>Possible<\/td><td>Avoided<\/td><\/tr><\/tbody><\/table>"},{"question":"What is the future outlook for half duplex communication?","answer":"<p>While full duplex and advanced wireless technologies are becoming more prevalent, half duplex will likely continue to find use in specific applications that require cost-effectiveness and simplicity.<\/p>"},{"question":"How are proxy servers related to half duplex?","answer":"<p>Proxy servers can be employed in networks using half duplex technology to enhance efficiency and security. They can cache frequently accessed content, balance server loads, and add a layer of security by acting as intermediaries between clients and servers.<\/p>"}]},"_links":{"self":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/wiki\/477405","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/wiki"}],"about":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/types\/wiki"}],"version-history":[{"count":0,"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/wiki\/477405\/revisions"}],"wp:attachment":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/media?parent=477405"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}