WANs

Inethiwekhi esuka kwikhompyutha iye ukuqinisekisa amanqanaba zokungahambisani imigangatho ethile esetyenziswa yi sokuyilwa womnatha, ebizwa iprotocol. Baya kuza hardware ne-software. izixhobo zekhompyutha (ujongano) exhasiweyo kwimigangatho mxube ngokwasemzimbeni, kwaye zisebenza ngexesha i data ngenkxaso software ezikhethekileyo.

LANs kunye WANs zichazwa koko elandelwayo abayisebenzisayo. Le computers womnatha zisetyenziswa ikakhulu ngenxa iqela elilodwa nemigangatho zonke nxaxheba ukuxhumana senginginya nodibaniso iikhompyutha indawo, izakhiwo, imigangatho.

WANs kukugubungela, njengoko umthetho, iindawo ezinkulu. Bona zizidibanise zombini iikhompyutha ngamnye indawo nothungelwano yendawo isebenzisa iprotocol ezahlukeneyo.

Imisebenzi ye uluntu oluphucukileyo kwiimeko mihla akunakwenzeka ngaphandle ngonxibelelwano ngokukhawuleza exchange olukhawulezayo lolwazi. WANs zenzelwe ukuba ukusombulula le ngxaki. Imeko esisiseko nokusebenza kwala networks ke lwephanyazo ukudluliselwa kolwazi , kungakhathaliseki ukuba computers zisuswe omnye komnye.

uthungelwano lwehlabathi - oku kuyinto inethiwekhi enjalo, equka iikhompyutha, akhiwe kwintsimi enkulu ukuba i esingenakubalwa yeenkqubo zekhompyutha oxhulumene kwi network. Iqondo data kwi network lingaphantsi kwenani yasekuhlaleni.

Izivumelwano kwinethiwekhi yekhompyutha

womnatha Global ixhasa TCP / IP, ATM, ephalamende, kunye nabanye. Le protocol iqhelekileyo - TCP / IP, kuquka sub-protocol. It - application subprotocol, ezothutho, uthungelwano, ilinki emzimbeni.

Iinkqubo ezininzi isebenze kwinqanaba yesicelo kwaye neenkqubo zabo. Oku - HTTP, WWW, njl Izivumelwano linoxanduva lokunikezela nokubonisa ulwazi olufunekayo.

Transport protocol iqinisekisa unikezelo data kwezicelo ezithile ingaphatha kubo. TCP ibizwa.

Network protocol IP unoxanduva nokufumana kunye nokuthumela izicelo kwinqanaba elisezantsi ukufumana yonke ingcaciso eyimfuneko.

Channel kunye maleko ebonakalayo unoxanduva yokuqingqa iimeko ugqithiso iindlela kunye data.

Ayaziwa uthungelwano lwehlabathi; umzekelo, WWW (WorldWide Web). Uthungelwano iquka abancedisi agcina ulwazi oluyimfuneko kubasebenzisi kunye neekhompyutha ngabanye ukufumana ingcaciso evela kwiseva bazilayishe kubo. WWW Network - lula kwaye kulula ukuyisebenzisa.

uthungelwano Global ziquka womnatha ezibandakanya amacandelo ezahlukeneyo ezifana nemigca zonxibelelwano kunye nezinto utshintshayo. Luluhle unxibelelwano ngenye eyaziwa njengamajelo okanye ngoohola, phezu kwabo, data liyagungqa kwimatshini ukuya kumatshini.

Ukutshintshela izinto ezisetyenziswa ukudibanisa imigca unxibelelwano, bakhonza imizila. Oku - computer zizodwa.

WANs iqulathe jikelele inani elikhulu zocingo kunye neengcingo adibanayo isikali imizila.

A ithuba lesibini ukudibanisa phakathi imizila unxibelelwano ngonomathotholo, esebenzisa satellite okanye iklasi ezisentlabathini. umzila nganye eriyali yayo, apho iyakwazi ukufumana nokuthumela uphawu. imizila Network kube lula athatyathwe satellite, kwaye kwezinye iimeko, kufuneka ithuba lokuva ulwazi idluliselwe kwi imizila ezikufuphi ukuba ukuthumela idatha yisathelayithi. Kwezinye WANs, yonke imizila oqhagamshelwano phakathi eziqhelekileyo esimanqaku ezimbini subnet, yisathelayithi kubonelelwa kuphela abanye babo. networks satellite kusasazwa ngqo yaye ezifunwa kakhulu naphi na apho kuyimfuneko ukuze kuqinisekiswe zosasazo.