WANs

Ngo inethiwekhi yekhompyutha ukuqinisekisa amazinga ukuhambisana nezindinganiso ezithile ezisetshenziswa izakhiwo inethiwekhi, ngokuthi yezifiso. Eza e hardware ne-software. amadivaysi Hardware (interface) zisekelwa izindinganiso ungqimba ngokomzimba, futhi isebenzise idatha software ukwesekwa ezikhethekile.

LANs futhi WANs kuchazwa ngalokho yezifiso abawasebenzisayo. I -computer inethiwekhi ngokuyinhloko esetshenziselwa iqoqo elilodwa amazinga bonke abahlanganyeli ukuhleloxhumano ukuxhuma amakhompyutha izakhiwo, izakhiwo, iphansi.

WANs ukumboza, njengoba umthetho, izindawo ezinkulu. Lapho zihlanganiswa womabili amakhompyutha ngabanye namanethiwekhi bendawo bendawo ngokusebenzisa yezifiso ahlukahlukene.

Imisebenzi umphakathi ophucukile ezimweni yesimanje awunakuba khona ngaphandle kokuthethelela wokuxhumana okusheshayo kanye exchange okusheshayo kolwazi. WANs zenzelwe ukubhekana nale nkinga. Isimo eziyisisekelo ukuze kusebenze lezi amanethiwekhi iyona leso ukudluliswa kolwazi , kungakhathaliseki ukuthi amakhompyutha ziyasuswa kusukela komunye nomunye.

inethiwekhi Global - lena yenethiwekhi, okubandakanya amakhompyutha, etholakala kulezi zindawo enkulukazi esingenamkhawulo zekhompyutha ixhunywe kwinethiwekhi. Izinga idatha ku inethiwekhi ingaphansi kwe zendawo.

lenethiwekhi yekhompyutha yezifiso

inethiwekhi Global isekela TCP / IP, ATM, ephalamende, kanye nabanye. Okuvame kakhulu olandelwayo - TCP / IP, kuhlanganise a sub-protocol. It - subprotocol isicelo, ezokuthutha, inethiwekhi, isixhumanisi ngokomzimba.

Izinhlelo eziningi usebenze ezingeni isicelo futhi ube yezifiso zabo. It - HTTP, WWW, njll Izivumelwano banesibopho abakhipha nokubonisa ulwazi oludingekayo.

protocol Ezokuthutha iqinisekisa idatha ukulethwa kwezicelo okuqondile okungakusiza ukuzisingatha. TCP libizwa.

Uxhumano olandelwayo IP unesibopho ethola nokuthumela izicelo ezingeni eliphansi ukuze uthole lonke ulwazi oludingekile.

Channel futhi ungqimba ngokomzimba inesibopho sokunquma izindlela nedatha izimo yokudlulisela.

Akwaziwa amanethiwekhi global: isibonelo, WWW (Worldwide Web). Inethiwekhi siqukethe amaseva ukuthi ukugcina ulwazi olufanele kubasebenzisi namakhompyutha ngabanye ukuthi ukuthola ulwazi kusuka kuseva futhi ukulayisha ke kubo. WWW Network - elula futhi kulula ukuyisebenzisa.

amanethiwekhi Global zihlanganisa subnetwork ehlanganisa izingxenye ahlukene ezifana zokuxhumana imigqa izakhi usuke. Imizila yokukhulumisana eyaziwa nangokuthi iziteshi noma emikhulu, phezu kwabo, imininingwane idluliswa kusuka umshini kumshini.

Ukushintsha ama izakhi ezisetshenziswa ukuxhuma zokuxhumana imigqa, bakhonza njengamaphayona imizila. It - ezikhethekile amakhompyutha.

WANs ngokuvamile aqukethe inani elikhulu ngocingo futhi izintambo ukuthi ukuxhuma yebhangqa imizila.

A kungenzeka yesibili ukuxhumanisa phakathi imizila isixhumanisi umsakazo, usebenzisa satellite noma ukuphinda eliwumhlaba. router ngamunye has antenna ayo, lapho-ke uyakwazi ukuthola nokuthumela isignali. imizila Network kungenziwa kalula othathwe amasignali e-satellite, futhi kwezinye izimo, babe nethuba ukuzwa ulwazi ngobulili esikhathini imizila angomakhelwane ukuthi ukuthumela idatha ku-satellite. Kwezinye WANs, bonke imizila oxhumene abavamile ezimbili iphuzu subnet, isiphuphutheki unikezwe kuphela ezinye zazo. Isethelayithi amanethiwekhi asakazwa futhi iningi ziphoqa lapho okusweleka khona ukuqinisekisa kokusakaza.