ʶһѵ¡͢

(Network Architecture)

  աâšѹ 蹤ͧػóҡ 1 ͧǢͧ

Դ͡ѹͧաػóЫͿ ⏴ ػóҵҰҹ礧͹ջѭ㹡â ҧá šѹҧػóҧԵ ͵ҧ ҨзԴᵡҧ 㹡á˹ ٻẺ ͧ ٻẺѺ ѧ鹨֧繨еͧԴҫͿդö㹡 § ᵡҧѹö㨡ѹ ͧ֡Ҷ͢¡ ˹ ػóᵡҧѹ 50 Ẻ ͡ѹ͢ǡѹ еͧ ͿѲ дѺ㴨зӧҹҧҺ

  »ѭҴѧ ͧ ͡Եҧ ѲҵҰҹ
âẺҧ Եػóҧ ִẺ㹡üԵԹ оѲԹ ͧºкǡѹ öѹ ͹С˹ҵҰҹ˹ 繷еͧաá˹çҧ ʶһѵ¡ͧâŢҡ͹ С͹ Ҩӡ֡Ҷ֧çҧ ʶһѵ¡õԴâ Ҩҷӡѡ ѺѾ෤Ԥ ͹Ӥѭ㹡֡ͧͧʶһѵ¡͢¡ѹ͹
 
  (Layer) ŴѭҤҡ Ѻʹ㹡èѴõԴâ ç
ҧͧâػǹ˭ж١͡繪 (level) ¡ (Layer) բǹӴѺ÷ӧҹͧͧ ŢӴѺ (N) ´ ˹ҷ÷ӧҹͧᵡҧѹ͡
  ⵤ (Protocol) 㹡ػó͢դѾ
§ 2 ͹Ե (Entity) к (System) ͸Ժҧ ͹Ե ͻपкѴðҹ 繵 ǹк Թ ૹ 繵 㹡÷͹Եҡ 2 觨öáѹ ͹Եͧ ͧ "ٴǡѹ" ¶֧еͧաá˹ѡɳС ٻẺԸա ѧ ӡѴͧⵤš 絢ͧ鹵͹ ٻẺ ѡɳԸա㹡÷ ͹Եöáѹ
  ʶһѵ¡͢ áѹҧкҧѺ
ⵤẺ˹觨Ѻҧ鹷 N ͧͧ˹觡Ѻ鹷 N ǡѹ ͧͧ աͧ˹ ҧâšѹԧ N ͧػó ͧзӡüҹҧ 繡Ẻ "Ҿ" ҹ͡ҧ㹡 ǤԴǨáѹµç Ъ ¡Ẻ "Ẻ͹ԧ" (Virtual Communication)
  Թ࿫ (Interface) 㹡Թ࿫͡õԴҧ N
N+1 ͪ鹷 N-1 ·ҧ繼ӧҹѺ鹺 ҡա ¹ŧ 㹪 ռšз͹µҺ㴷Թ࿫ ҧѧ͹
  ͧ͡ ⵤ Թ࿫ѹ¡
ʶһѵ¡͢ (Network Architecture)ٻẺͧʶһѵ¡繴ѧٻ
  㹡âҧ Host A Host B ¼ҹк͢ ͹ Host A
觢ѧ Host B Ẻѹµç 㹤繨ԧǢ鹵͹觢Ũҡ Host A ѧ Host B зӴѺѧٻ仹

M = Message ͢ H = Header ǹǢͧ T = Tailer ǹ¢ͧ
ٻ 觡Ѻżҹͧʶһѵ¡͢
  ҡҾʴ繢鹵͹÷ӧҹԧͧâҧ (Host A)
мѺ (Host B) ӴѺ鹵͹ѧ
  1. M Ҩ 鹡èҡת鹺ش 7
M ж١觨ҡ 7 Ѻ 6 ¼ҹҧԹ࿫ 6/7
  2. 6 Ѻ M зӡ¹ŧʢͧ 觵ѧ
5 ¼ҹԹ࿫ 5/6
  3. 5 ӡ¹ŧáѺ M §Ъ¤Ǻ
Ţͧ 6ͧͧѺѧѺèҡ觡к 5 ͧͧش Ҩ¡ԡ觢ù
  4. ͢üҹԹ࿫ 4/5 ҡ 5 ѧ 4 觢 M ͡
ࡨ M1 M2 觵Ѻ 3 3 ͧâŷբҴӡѴ ͡ ҡ 4 ѧաǹǢͧࡨ(H) ͡˹ӴѺҢͧࡨӹ дǡ 4 ͧͧѺ㹡èṡࡨҡ͹ѧ ͻͧѹ ԴҴ㹡ࡨҧ 鹡Ѻ繢 M ҧ١ͧ
  5. Ѻ 3 ѺࡨҨҡ 4 Ǩз˹ҷѴԹࡨ
㴤è͡价ҧͧҧ˹ 鹷ҧ ШԵǹ H ͧ 3 仡Ѻ ࡨŴ
  6. 2 ѺࡨŨҡ 3 ǡ˹ҷ㹡äǺ觢Ũҡ
鹷ҧѧ·ҧ١ͧ͹ 2 Եǹ H кԵԴ T ͧ仡Ѻ 㹡÷ӡõǨͺԴҴҨԴҧ觢 2 ͧ ͧѺ繼Ǩͺ
  7. 1 觨зӡ觢͡ҡͧ仨ԧ ҡ鹷ҧѧա
·ҧ¼ҹҧ͡ҧ
  8. ͢ŵҧ ͧѺ 鹵͹÷ӧҹͧͧѺ
ӧҹ͹ѺѹѺ÷ӧҹǡѹͧͧ觨ҡҧش仪鹺ش
  çҧͧ͢¨͡ ջѭԴ
ѡɳФ¤֧ѹ
  - ѭҡ§ С§Թ
  - ѭҡ - ѺҨ㹡§Ẻ simplex, half-duplex,full-duplex
觨еͧ˹ҨͧҧѺ 1 鹷ҧ§
  - ѭҡäǺԴԴҴ
  - ѭѵǢͧ Ѻҡѹ
  - ѭҡŵ硫ªͧҧҧ
  㹡çҧ͢͡ С˹˹ҷ÷ӧҹ
ͧ ºѷԵ˹ٻẺҵҰҹѹ ٻẺͧ ʶһѵ¡͢·ҵҰҹѺкԴҡش繨 ʶһѵ¡͢ ٻẺ OSI 觡˹ͧ ISO
 
     
 
ʶһѵ¡͢ OSI