{"id":475927,"date":"2023-08-09T07:24:43","date_gmt":"2023-08-09T07:24:43","guid":{"rendered":""},"modified":"2023-09-05T11:11:38","modified_gmt":"2023-09-05T11:11:38","slug":"asynchronous-transmission","status":"publish","type":"wiki","link":"https:\/\/oneproxy.pro\/vn\/wiki\/asynchronous-transmission\/","title":{"rendered":"Truy\u1ec1n kh\u00f4ng \u0111\u1ed3ng b\u1ed9"},"content":{"rendered":"

Truy\u1ec1n kh\u00f4ng \u0111\u1ed3ng b\u1ed9 l\u00e0 ph\u01b0\u01a1ng th\u1ee9c truy\u1ec1n th\u00f4ng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong m\u1ea1ng m\u00e1y t\u00ednh v\u00e0 vi\u1ec5n th\u00f4ng, cho ph\u00e9p truy\u1ec1n d\u1eef li\u1ec7u gi\u1eefa c\u00e1c thi\u1ebft b\u1ecb m\u00e0 kh\u00f4ng c\u1ea7n \u0111\u1ed3ng h\u1ed3 \u0111\u1ed3ng b\u1ed9. Kh\u00f4ng gi\u1ed1ng nh\u01b0 truy\u1ec1n \u0111\u1ed3ng b\u1ed9, trong \u0111\u00f3 d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c g\u1eedi trong c\u00e1c kho\u1ea3ng th\u1eddi gian c\u1ed1 \u0111\u1ecbnh, truy\u1ec1n kh\u00f4ng \u0111\u1ed3ng b\u1ed9 g\u1eedi d\u1eef li\u1ec7u d\u01b0\u1edbi d\u1ea1ng c\u00e1c k\u00fd t\u1ef1 ho\u1eb7c khung ri\u00eang l\u1ebb v\u1edbi c\u00e1c bit b\u1eaft \u0111\u1ea7u v\u00e0 d\u1eebng, cho ph\u00e9p trao \u0111\u1ed5i d\u1eef li\u1ec7u hi\u1ec7u qu\u1ea3 gi\u1eefa c\u00e1c thi\u1ebft b\u1ecb ho\u1ea1t \u0111\u1ed9ng \u1edf c\u00e1c t\u1ed1c \u0111\u1ed9 kh\u00e1c nhau.<\/p>\n

L\u1ecbch s\u1eed ngu\u1ed3n g\u1ed1c c\u1ee7a truy\u1ec1n d\u1eabn kh\u00f4ng \u0111\u1ed3ng b\u1ed9 v\u00e0 s\u1ef1 \u0111\u1ec1 c\u1eadp \u0111\u1ea7u ti\u00ean c\u1ee7a n\u00f3<\/h2>\n

Kh\u00e1i ni\u1ec7m truy\u1ec1n kh\u00f4ng \u0111\u1ed3ng b\u1ed9 c\u00f3 th\u1ec3 b\u1eaft ngu\u1ed3n t\u1eeb nh\u1eefng ng\u00e0y \u0111\u1ea7u c\u1ee7a \u0111i\u1ec7n b\u00e1o. V\u00e0o gi\u1eefa th\u1ebf k\u1ef7 19, h\u1ec7 th\u1ed1ng \u0111i\u1ec7n b\u00e1o \u0111\u1ea7u ti\u00ean s\u1eed d\u1ee5ng m\u00e3 Morse \u0111\u1ec3 truy\u1ec1n th\u00f4ng tin kh\u00f4ng \u0111\u1ed3ng b\u1ed9. Vi\u1ec7c truy\u1ec1n t\u1ea3i d\u1ef1a v\u00e0o t\u00edn hi\u1ec7u \u0111\u1ea7u v\u00e0o th\u1ee7 c\u00f4ng c\u1ee7a ng\u01b0\u1eddi v\u1eadn h\u00e0nh, khi\u1ebfn n\u00f3 v\u1ed1n kh\u00f4ng \u0111\u1ed3ng b\u1ed9. Ph\u01b0\u01a1ng ph\u00e1p n\u00e0y \u0111\u00e1nh d\u1ea5u s\u1ef1 kh\u1edfi \u0111\u1ea7u c\u1ee7a giao ti\u1ebfp kh\u00f4ng \u0111\u1ed3ng b\u1ed9, sau n\u00e0y ph\u00e1t tri\u1ec3n c\u00f9ng v\u1edbi nh\u1eefng ti\u1ebfn b\u1ed9 c\u00f4ng ngh\u1ec7.<\/p>\n

Th\u00f4ng tin chi ti\u1ebft v\u1ec1 truy\u1ec1n kh\u00f4ng \u0111\u1ed3ng b\u1ed9<\/h2>\n

Truy\u1ec1n kh\u00f4ng \u0111\u1ed3ng b\u1ed9 d\u1ef1a tr\u00ean nguy\u00ean t\u1eafc \u0111\u01a1n gi\u1ea3n nh\u01b0ng hi\u1ec7u qu\u1ea3. M\u1ed7i khung d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c g\u1eedi ch\u1ee9a m\u1ed9t bit b\u1eaft \u0111\u1ea7u, c\u00e1c bit d\u1eef li\u1ec7u, m\u1ed9t bit ch\u1eb5n l\u1ebb t\u00f9y ch\u1ecdn \u0111\u1ec3 ki\u1ec3m tra l\u1ed7i v\u00e0 m\u1ed9t ho\u1eb7c nhi\u1ec1u bit d\u1eebng. Bit b\u1eaft \u0111\u1ea7u cho bi\u1ebft ph\u1ea7n \u0111\u1ea7u c\u1ee7a khung, trong khi (c\u00e1c) bit d\u1eebng cho bi\u1ebft ph\u1ea7n cu\u1ed1i c\u1ee7a khung. C\u1ea5u tr\u00fac n\u00e0y cho ph\u00e9p truy\u1ec1n kh\u00f4ng \u0111\u1ed3ng b\u1ed9 linh ho\u1ea1t h\u01a1n v\u00e0 \u00edt ph\u1ee5 thu\u1ed9c h\u01a1n v\u00e0o th\u1eddi gian nghi\u00eam ng\u1eb7t, khi\u1ebfn n\u00f3 ph\u00f9 h\u1ee3p v\u1edbi nhi\u1ec1u \u1ee9ng d\u1ee5ng.<\/p>\n

C\u1ea5u tr\u00fac b\u00ean trong c\u1ee7a truy\u1ec1n kh\u00f4ng \u0111\u1ed3ng b\u1ed9 v\u00e0 c\u00e1ch th\u1ee9c ho\u1ea1t \u0111\u1ed9ng<\/h2>\n

\u0110\u1ec3 hi\u1ec3u c\u1ea5u tr\u00fac b\u00ean trong c\u1ee7a truy\u1ec1n kh\u00f4ng \u0111\u1ed3ng b\u1ed9, ch\u00fang ta h\u00e3y chia nh\u1ecf quy tr\u00ecnh t\u1eebng b\u01b0\u1edbc:<\/p>\n

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  1. \n

    Th\u00e0nh ph\u1ea7n khung d\u1eef li\u1ec7u: Nh\u01b0 \u0111\u00e3 \u0111\u1ec1 c\u1eadp tr\u01b0\u1edbc \u0111\u00f3, m\u1ed7i khung d\u1eef li\u1ec7u bao g\u1ed3m m\u1ed9t bit b\u1eaft \u0111\u1ea7u, c\u00e1c bit d\u1eef li\u1ec7u, m\u1ed9t bit ch\u1eb5n l\u1ebb (t\u00f9y ch\u1ecdn) v\u00e0 m\u1ed9t ho\u1eb7c nhi\u1ec1u bit d\u1eebng.<\/p>\n<\/li>\n

  2. \n

    G\u1eedi d\u1eef li\u1ec7u: Thi\u1ebft b\u1ecb truy\u1ec1n b\u1eaft \u0111\u1ea7u b\u1eb1ng c\u00e1ch g\u1eedi bit b\u1eaft \u0111\u1ea7u, ti\u1ebfp theo l\u00e0 c\u00e1c bit d\u1eef li\u1ec7u, bit ch\u1eb5n l\u1ebb t\u00f9y ch\u1ecdn v\u00e0 cu\u1ed1i c\u00f9ng l\u00e0 (c\u00e1c) bit d\u1eebng. Thi\u1ebft b\u1ecb g\u1eedi kh\u00f4ng ch\u1edd x\u00e1c nh\u1eadn t\u1eeb ng\u01b0\u1eddi nh\u1eadn, khi\u1ebfn n\u00f3 kh\u00f4ng \u0111\u1ed3ng b\u1ed9.<\/p>\n<\/li>\n

  3. \n

    Nh\u1eadn d\u1eef li\u1ec7u: Thi\u1ebft b\u1ecb nh\u1eadn gi\u00e1m s\u00e1t \u0111\u01b0\u1eddng truy\u1ec1n \u0111\u1ec3 t\u00ecm c\u00e1c bit b\u1eaft \u0111\u1ea7u. Khi ph\u00e1t hi\u1ec7n bit b\u1eaft \u0111\u1ea7u, n\u00f3 b\u1eaft \u0111\u1ea7u \u0111\u1ecdc c\u00e1c bit d\u1eef li\u1ec7u, bit ch\u1eb5n l\u1ebb v\u00e0 (c\u00e1c) bit d\u1eebng t\u01b0\u01a1ng \u1ee9ng.<\/p>\n<\/li>\n

  4. \n

    B\u1ea3n ch\u1ea5t kh\u00f4ng \u0111\u1ed3ng b\u1ed9: Truy\u1ec1n kh\u00f4ng \u0111\u1ed3ng b\u1ed9 cho ph\u00e9p ng\u01b0\u1eddi g\u1eedi v\u00e0 ng\u01b0\u1eddi nh\u1eadn ho\u1ea1t \u0111\u1ed9ng \u0111\u1ed9c l\u1eadp m\u00e0 kh\u00f4ng c\u1ea7n t\u00edn hi\u1ec7u \u0111\u1ed3ng h\u1ed3 d\u00f9ng chung. T\u00ednh \u0111\u1ed9c l\u1eadp n\u00e0y gi\u00fap n\u00f3 ph\u00f9 h\u1ee3p v\u1edbi nhi\u1ec1u t\u00ecnh hu\u1ed1ng giao ti\u1ebfp kh\u00e1c nhau, \u0111\u1eb7c bi\u1ec7t khi c\u00e1c thi\u1ebft b\u1ecb c\u00f3 t\u1ed1c \u0111\u1ed9 xung nh\u1ecbp kh\u00e1c nhau ho\u1eb7c khi truy\u1ec1n qua c\u00e1c k\u00eanh nhi\u1ec5u.<\/p>\n<\/li>\n<\/ol>\n

    Ph\u00e2n t\u00edch c\u00e1c t\u00ednh n\u0103ng ch\u00ednh c\u1ee7a truy\u1ec1n kh\u00f4ng \u0111\u1ed3ng b\u1ed9<\/h2>\n

    Truy\u1ec1n kh\u00f4ng \u0111\u1ed3ng b\u1ed9 s\u1edf h\u1eefu m\u1ed9t s\u1ed1 t\u00ednh n\u0103ng ch\u00ednh khi\u1ebfn n\u00f3 c\u00f3 gi\u00e1 tr\u1ecb trong c\u00e1c h\u1ec7 th\u1ed1ng truy\u1ec1n th\u00f4ng:<\/p>\n

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    1. \n

      T\u00ednh linh ho\u1ea1t: Truy\u1ec1n kh\u00f4ng \u0111\u1ed3ng b\u1ed9 kh\u00f4ng y\u00eau c\u1ea7u \u0111\u1ed3ng b\u1ed9 h\u00f3a ch\u1eb7t ch\u1ebd gi\u1eefa ng\u01b0\u1eddi g\u1eedi v\u00e0 ng\u01b0\u1eddi nh\u1eadn, cho ph\u00e9p c\u00e1c thi\u1ebft b\u1ecb ho\u1ea1t \u0111\u1ed9ng \u1edf c\u00e1c t\u1ed1c \u0111\u1ed9 kh\u00e1c nhau m\u00e0 kh\u00f4ng g\u00e2y ra s\u1ef1 c\u1ed1 li\u00ean l\u1ea1c.<\/p>\n<\/li>\n

    2. \n

      Ph\u00e1t hi\u1ec7n l\u1ed7i: Bit ch\u1eb5n l\u1ebb t\u00f9y ch\u1ecdn trong khung d\u1eef li\u1ec7u cho ph\u00e9p ph\u00e1t hi\u1ec7n l\u1ed7i c\u01a1 b\u1ea3n, cung c\u1ea5p c\u01a1 ch\u1ebf \u0111\u01a1n gi\u1ea3n \u0111\u1ec3 ki\u1ec3m tra t\u00ednh to\u00e0n v\u1eb9n c\u1ee7a d\u1eef li\u1ec7u.<\/p>\n<\/li>\n

    3. \n

      Hi\u1ec7u qu\u1ea3: C\u1ea5u tr\u00fac bit start-stop cho ph\u00e9p truy\u1ec1n kh\u00f4ng \u0111\u1ed3ng b\u1ed9 hi\u1ec7u qu\u1ea3 v\u00ec n\u00f3 gi\u1ea3m thi\u1ec3u chi ph\u00ed ho\u1ea1t \u0111\u1ed9ng v\u00e0 \u0111\u1ea3m b\u1ea3o t\u00ednh to\u00e0n v\u1eb9n d\u1eef li\u1ec7u v\u1edbi \u0111\u1ed9 d\u01b0 th\u1eeba t\u1ed1i thi\u1ec3u.<\/p>\n<\/li>\n

    4. \n

      Kh\u1ea3 n\u0103ng ch\u1ecbu ti\u1ebfng \u1ed3n: Truy\u1ec1n kh\u00f4ng \u0111\u1ed3ng b\u1ed9 c\u00f3 th\u1ec3 x\u1eed l\u00fd c\u00e1c k\u00eanh li\u00ean l\u1ea1c \u1ed3n \u00e0o hi\u1ec7u qu\u1ea3 h\u01a1n so v\u1edbi c\u00e1c ph\u01b0\u01a1ng ph\u00e1p \u0111\u1ed3ng b\u1ed9 v\u00ec n\u00f3 kh\u00f4ng ph\u1ee5 thu\u1ed9c v\u00e0o th\u1eddi gian ch\u00ednh x\u00e1c.<\/p>\n<\/li>\n<\/ol>\n

      C\u00e1c lo\u1ea1i truy\u1ec1n kh\u00f4ng \u0111\u1ed3ng b\u1ed9<\/h2>\n

      Truy\u1ec1n kh\u00f4ng \u0111\u1ed3ng b\u1ed9 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c ph\u00e2n th\u00e0nh hai lo\u1ea1i ch\u00ednh d\u1ef1a tr\u00ean s\u1ed1 l\u01b0\u1ee3ng bit d\u1eebng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng:<\/p>\n\n\n\n\n\n\n
      C\u00e1c lo\u1ea1i<\/th>\nS\u1ef1 mi\u00eau t\u1ea3<\/th>\n<\/tr>\n<\/thead>\n
      1 bit d\u1eebng<\/td>\nLo\u1ea1i ph\u1ed5 bi\u1ebfn nh\u1ea5t, trong \u0111\u00f3 m\u1ed9t bit d\u1eebng theo sau c\u00e1c bit d\u1eef li\u1ec7u.<\/td>\n<\/tr>\n
      2 bit d\u1eebng<\/td>\nM\u1ed9t lo\u1ea1i \u00edt ph\u1ed5 bi\u1ebfn h\u01a1n, trong \u0111\u00f3 c\u00f3 hai bit d\u1eebng theo sau c\u00e1c bit d\u1eef li\u1ec7u.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

      C\u00e1ch s\u1eed d\u1ee5ng truy\u1ec1n kh\u00f4ng \u0111\u1ed3ng b\u1ed9, c\u00e1c v\u1ea5n \u0111\u1ec1 v\u00e0 gi\u1ea3i ph\u00e1p<\/h2>\n

      Truy\u1ec1n kh\u00f4ng \u0111\u1ed3ng b\u1ed9 t\u00ecm th\u1ea5y c\u00e1c \u1ee9ng d\u1ee5ng trong nhi\u1ec1u l\u0129nh v\u1ef1c kh\u00e1c nhau, bao g\u1ed3m:<\/p>\n

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      1. \n

        Giao ti\u1ebfp n\u1ed1i ti\u1ebfp: N\u00f3 th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong giao ti\u1ebfp n\u1ed1i ti\u1ebfp gi\u1eefa m\u00e1y t\u00ednh v\u00e0 c\u00e1c thi\u1ebft b\u1ecb ngo\u1ea1i vi nh\u01b0 b\u00e0n ph\u00edm, chu\u1ed9t v\u00e0 m\u00e1y in.<\/p>\n<\/li>\n

      2. \n

        Modem: Truy\u1ec1n kh\u00f4ng \u0111\u1ed3ng b\u1ed9 l\u00e0 n\u1ec1n t\u1ea3ng c\u1ee7a giao ti\u1ebfp modem, t\u1ea1o \u0111i\u1ec1u ki\u1ec7n trao \u0111\u1ed5i d\u1eef li\u1ec7u gi\u1eefa c\u00e1c m\u00e1y t\u00ednh qua \u0111\u01b0\u1eddng d\u00e2y \u0111i\u1ec7n tho\u1ea1i.<\/p>\n<\/li>\n

      3. \n

        Thi\u1ebft b\u1ecb IoT: Nhi\u1ec1u thi\u1ebft b\u1ecb Internet of Things (IoT) s\u1eed d\u1ee5ng \u0111\u01b0\u1eddng truy\u1ec1n kh\u00f4ng \u0111\u1ed3ng b\u1ed9 \u0111\u1ec3 truy\u1ec1n d\u1eef li\u1ec7u hi\u1ec7u qu\u1ea3 v\u00e0 ti\u1ebft ki\u1ec7m n\u0103ng l\u01b0\u1ee3ng.<\/p>\n<\/li>\n<\/ol>\n

        B\u00ean c\u1ea1nh nh\u1eefng \u01b0u \u0111i\u1ec3m, truy\u1ec1n d\u1eabn kh\u00f4ng \u0111\u1ed3ng b\u1ed9 c\u0169ng ph\u1ea3i \u0111\u1ed1i m\u1eb7t v\u1edbi nh\u1eefng th\u00e1ch th\u1ee9c nh\u01b0:<\/p>\n

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        1. \n

          T\u1ed1c \u0111\u1ed9 d\u1eef li\u1ec7u h\u1ea1n ch\u1ebf: Truy\u1ec1n kh\u00f4ng \u0111\u1ed3ng b\u1ed9 c\u00f3 th\u1ec3 kh\u00f4ng ph\u00f9 h\u1ee3p \u0111\u1ec3 truy\u1ec1n d\u1eef li\u1ec7u t\u1ed1c \u0111\u1ed9 cao do chi ph\u00ed \u0111\u01b0\u1ee3c \u0111\u01b0a ra b\u1edfi c\u00e1c bit b\u1eaft \u0111\u1ea7u v\u00e0 d\u1eebng.<\/p>\n<\/li>\n

        2. \n

          S\u1ef1 c\u1ed1 \u0111\u1ed3ng b\u1ed9 h\u00f3a: Giao ti\u1ebfp kh\u00f4ng \u0111\u1ed3ng b\u1ed9 c\u00f3 th\u1ec3 g\u1eb7p ph\u1ea3i s\u1ef1 c\u1ed1 \u0111\u1ed3ng b\u1ed9 h\u00f3a khi c\u00e1c thi\u1ebft b\u1ecb ho\u1ea1t \u0111\u1ed9ng \u1edf t\u1ed1c \u0111\u1ed9 kh\u00e1c nhau \u0111\u00e1ng k\u1ec3.<\/p>\n<\/li>\n<\/ol>\n

          \u0110\u1ec3 gi\u1ea3i quy\u1ebft nh\u1eefng th\u00e1ch th\u1ee9c n\u00e0y, c\u00e1c k\u1ef9 thu\u1eadt nh\u01b0 giao th\u1ee9c \u0111i\u1ec1u khi\u1ec3n lu\u1ed3ng v\u00e0 s\u1eeda l\u1ed7i \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 t\u1ed1i \u01b0u h\u00f3a giao ti\u1ebfp kh\u00f4ng \u0111\u1ed3ng b\u1ed9.<\/p>\n

          C\u00e1c \u0111\u1eb7c \u0111i\u1ec3m ch\u00ednh v\u00e0 so s\u00e1nh v\u1edbi c\u00e1c thu\u1eadt ng\u1eef t\u01b0\u01a1ng t\u1ef1<\/h2>\n

          D\u01b0\u1edbi \u0111\u00e2y l\u00e0 so s\u00e1nh truy\u1ec1n kh\u00f4ng \u0111\u1ed3ng b\u1ed9 v\u1edbi c\u00e1c ph\u01b0\u01a1ng th\u1ee9c truy\u1ec1n th\u00f4ng t\u01b0\u01a1ng t\u1ef1:<\/p>\n\n\n\n\n\n\n\n\n
          \u0111\u1eb7c tr\u01b0ng<\/th>\nTruy\u1ec1n kh\u00f4ng \u0111\u1ed3ng b\u1ed9<\/th>\nTruy\u1ec1n \u0111\u1ed3ng b\u1ed9<\/th>\n<\/tr>\n<\/thead>\n
          Th\u1eddi gian<\/td>\nKh\u00f4ng c\u1ea7n \u0111\u1ed3ng h\u1ed3 \u0111\u1ed3ng b\u1ed9.<\/td>\nY\u00eau c\u1ea7u \u0111\u1ed3ng h\u1ed3 \u0111\u1ed3ng b\u1ed9.<\/td>\n<\/tr>\n
          Tr\u00ean kh\u00f4ng<\/td>\nChi ph\u00ed th\u1ea5p do bit b\u1eaft \u0111\u1ea7u-d\u1eebng.<\/td>\nChi ph\u00ed cao h\u01a1n do th\u1eddi gian li\u00ean t\u1ee5c.<\/td>\n<\/tr>\n
          Kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch t\u1ed1c \u0111\u1ed9<\/td>\nT\u01b0\u01a1ng th\u00edch v\u1edbi c\u00e1c t\u1ed1c \u0111\u1ed9 thi\u1ebft b\u1ecb kh\u00e1c nhau.<\/td>\nY\u00eau c\u1ea7u c\u00e1c thi\u1ebft b\u1ecb c\u00f3 t\u1ed1c \u0111\u1ed9 t\u01b0\u01a1ng t\u1ef1.<\/td>\n<\/tr>\n
          Ki\u1ec3m tra l\u1ed7i<\/td>\nKi\u1ec3m tra l\u1ed7i c\u01a1 b\u1ea3n b\u1eb1ng bit ch\u1eb5n l\u1ebb.<\/td>\nC\u00f3 th\u1ec3 y\u00eau c\u1ea7u c\u00e1c giao th\u1ee9c ki\u1ec3m tra l\u1ed7i n\u00e2ng cao.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

          Quan \u0111i\u1ec3m v\u00e0 c\u00f4ng ngh\u1ec7 t\u01b0\u01a1ng lai li\u00ean quan \u0111\u1ebfn truy\u1ec1n d\u1eabn kh\u00f4ng \u0111\u1ed3ng b\u1ed9<\/h2>\n

          Truy\u1ec1n d\u1eabn kh\u00f4ng \u0111\u1ed3ng b\u1ed9 c\u00f3 th\u1ec3 s\u1ebd ti\u1ebfp t\u1ee5c \u0111\u00f3ng m\u1ed9t vai tr\u00f2 quan tr\u1ecdng trong c\u00e1c h\u1ec7 th\u1ed1ng truy\u1ec1n th\u00f4ng trong t\u01b0\u01a1ng lai. Khi c\u00f4ng ngh\u1ec7 ti\u1ebfn b\u1ed9, ch\u00fang ta c\u00f3 th\u1ec3 mong \u0111\u1ee3i nh\u1eefng c\u1ea3i ti\u1ebfn trong k\u1ef9 thu\u1eadt ph\u00e1t hi\u1ec7n v\u00e0 s\u1eeda l\u1ed7i, n\u00e2ng cao h\u01a1n n\u1eefa \u0111\u1ed9 tin c\u1eady v\u00e0 hi\u1ec7u qu\u1ea3 c\u1ee7a giao ti\u1ebfp kh\u00f4ng \u0111\u1ed3ng b\u1ed9.<\/p>\n

          C\u00e1ch s\u1eed d\u1ee5ng ho\u1eb7c li\u00ean k\u1ebft m\u00e1y ch\u1ee7 proxy v\u1edbi truy\u1ec1n kh\u00f4ng \u0111\u1ed3ng b\u1ed9<\/h2>\n

          M\u00e1y ch\u1ee7 proxy \u0111\u00f3ng vai tr\u00f2 trung gian gi\u1eefa m\u00e1y kh\u00e1ch v\u00e0 m\u00e1y ch\u1ee7, t\u1ea1o \u0111i\u1ec1u ki\u1ec7n thu\u1eadn l\u1ee3i cho c\u00e1c t\u00e1c v\u1ee5 li\u00ean l\u1ea1c kh\u00e1c nhau. M\u1eb7c d\u00f9 kh\u00f4ng b\u1ecb r\u00e0ng bu\u1ed9c tr\u1ef1c ti\u1ebfp v\u1edbi truy\u1ec1n kh\u00f4ng \u0111\u1ed3ng b\u1ed9, m\u00e1y ch\u1ee7 proxy c\u00f3 th\u1ec3 n\u00e2ng cao qu\u00e1 tr\u00ecnh giao ti\u1ebfp t\u1ed5ng th\u1ec3 b\u1eb1ng c\u00e1ch t\u1ed1i \u01b0u h\u00f3a trao \u0111\u1ed5i d\u1eef li\u1ec7u, x\u1eed l\u00fd b\u1ed9 nh\u1edb \u0111\u1ec7m v\u00e0 cung c\u1ea5p l\u1edbp b\u1ea3o m\u1eadt b\u1ed5 sung.<\/p>\n

          Li\u00ean k\u1ebft li\u00ean quan<\/h2>\n

          \u0110\u1ec3 bi\u1ebft th\u00eam th\u00f4ng tin v\u1ec1 truy\u1ec1n kh\u00f4ng \u0111\u1ed3ng b\u1ed9, b\u1ea1n c\u00f3 th\u1ec3 kh\u00e1m ph\u00e1 c\u00e1c t\u00e0i nguy\u00ean sau:<\/p>\n

            \n
          1. Wikipedia - Giao ti\u1ebfp n\u1ed1i ti\u1ebfp kh\u00f4ng \u0111\u1ed3ng b\u1ed9<\/a><\/li>\n
          2. H\u01b0\u1edbng d\u1eabn \u2013 Truy\u1ec1n kh\u00f4ng \u0111\u1ed3ng b\u1ed9<\/a><\/li>\n
          3. H\u01b0\u1edbng d\u1eabn \u0111i\u1ec7n t\u1eed \u2013 Truy\u1ec1n t\u1ea3i kh\u00f4ng \u0111\u1ed3ng b\u1ed9 v\u00e0 \u0111\u1ed3ng b\u1ed9<\/a><\/li>\n<\/ol>\n

            T\u00f3m l\u1ea1i, truy\u1ec1n kh\u00f4ng \u0111\u1ed3ng b\u1ed9 l\u00e0 m\u1ed9t ph\u01b0\u01a1ng th\u1ee9c truy\u1ec1n th\u00f4ng c\u01a1 b\u1ea3n c\u00f3 l\u1ecbch s\u1eed l\u00e2u \u0111\u1eddi v\u00e0 ti\u1ebfp t\u1ee5c \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng trong c\u00e1c h\u1ec7 th\u1ed1ng truy\u1ec1n th\u00f4ng hi\u1ec7n \u0111\u1ea1i. T\u00ednh linh ho\u1ea1t, hi\u1ec7u qu\u1ea3 v\u00e0 kh\u1ea3 n\u0103ng ch\u1ed1ng \u1ed3n khi\u1ebfn n\u00f3 tr\u1edf th\u00e0nh l\u1ef1a ch\u1ecdn c\u00f3 gi\u00e1 tr\u1ecb cho nhi\u1ec1u \u1ee9ng d\u1ee5ng kh\u00e1c nhau v\u00e0 c\u00f3 th\u1ec3 v\u1eabn ph\u00f9 h\u1ee3p khi c\u00f4ng ngh\u1ec7 ph\u00e1t tri\u1ec3n.<\/p>","protected":false},"featured_media":475703,"menu_order":0,"template":"","meta":{"_acf_changed":false,"content-type":"","inline_featured_image":false,"footnotes":""},"class_list":["post-475927","wiki","type-wiki","status-publish","has-post-thumbnail","hentry"],"acf":{"faq_title":"Frequently Asked Questions about Asynchronous Transmission: A Comprehensive Guide<\/mark>","faq_items":[{"question":"What is asynchronous transmission?","answer":"

            Asynchronous transmission is a communication method used in computer networks and telecommunications. It allows data transmission between devices without requiring synchronized clocks, making it flexible and efficient for various applications.<\/p>"},{"question":"How did asynchronous transmission originate?","answer":"

            The concept of asynchronous transmission dates back to the early days of telegraphy in the mid-19th century. The first electrical telegraph systems used Morse code, and the transmission was inherently asynchronous, as operators manually input signals.<\/p>"},{"question":"How does asynchronous transmission work?","answer":"

            Asynchronous transmission involves sending data in frames with start and stop bits. Each frame contains a start bit to indicate the beginning, data bits, an optional parity bit for error checking, and one or more stop bits to indicate the end. Devices can communicate independently without relying on strict timing.<\/p>"},{"question":"What are the key features of asynchronous transmission?","answer":"

            Asynchronous transmission offers flexibility, error detection using parity bit, efficiency with low overhead, and noise tolerance. It allows devices to operate at different speeds and handle noisy communication channels effectively.<\/p>"},{"question":"What types of asynchronous transmission exist?","answer":"

            Asynchronous transmission can be categorized into two types:<\/p>

            1. 1 Stop Bit: The most common type, with a single stop bit following the data bits.<\/li>
            2. 2 Stop Bits: Less common, with two stop bits following the data bits.<\/li><\/ol>"},{"question":"In what ways is asynchronous transmission used?","answer":"

              Asynchronous transmission finds applications in various areas, such as serial communication between computers and peripheral devices, modem communication, and IoT devices for data transfer and power conservation.<\/p>"},{"question":"What challenges does asynchronous transmission face?","answer":"

              Despite its advantages, asynchronous transmission may have limited data rate capabilities for high-speed data transfer. It can also encounter synchronization issues when devices operate at significantly different speeds.<\/p>"},{"question":"How does asynchronous transmission compare to synchronous transmission?","answer":"

              Asynchronous transmission does not require synchronized clocks and has lower overhead due to start-stop bits. In contrast, synchronous transmission relies on synchronized clocks and has higher overhead due to constant timing.<\/p>"},{"question":"What are the future perspectives and technologies related to asynchronous transmission?","answer":"

              Asynchronous transmission is expected to continue playing a significant role in communication systems. Future advancements may include improved error detection and correction techniques, enhancing its reliability and efficiency.<\/p>"},{"question":"How are proxy servers associated with asynchronous transmission?","answer":"

              While not directly tied to asynchronous transmission, proxy servers act as intermediaries in communication and can optimize data exchange, handle caching, and provide an additional layer of security for communication processes.<\/p>"}]},"_links":{"self":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/wiki\/475927","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\/475927\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/media\/475703"}],"wp:attachment":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/media?parent=475927"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}