Dlulisa nge-Ethernet izintambo idatha kanye kwentambo

ukudluliswa kwedatha ngenethiwekhi kuhlanganisa sebuningini amadivayisi zokuxhumana ukuthi sihlanganise iziteshi idatha, kanye nedivayisi usuke enikeziwe phakathi yonke imilayezo Endpoints exchange.

Phakathi computer, isibonelo, ukudluliswa kwedatha okungamukelekile kwenziwe ngokuvumelana nezidingo zabantu ukusebenzela PC. Amadivayisi kungaba buthule isikhathi eside, abasebenza ngokuzimela (ukudlulisa idatha hhayi eyenziwa ngalesi sikhathi), bese wathumela endaweni ethile umlayezo noma idokhumenti. Lapho ucingo isiteshi ongaphakeme-speed, leli fayela zidlulele imizuzu eminingana, futhi ngokuvamile ecasula abasebenzisi. Ukuqeda zinkingana inethiwekhi lakhiwe, olusebenzisa ezivamile ikhebula ngesivinini kuwo wonke amadivayisi. Ngeke uthinte phezu imininingwane yezobuchwepheshe lapha, futhi ngeke sikwazi kuphela sithi lenethiwekhi kungenziwa amelwe ngesimo amakhompyutha oxhumene, ngamunye elandela siteshi. Endabeni ka ukudluliselwa computer ibona ikheli, futhi lo muntu okuthiwa kuso sibhekiswe, ithola ulwazi. Uma kudingeka, uthumele umsebenzisi ethize kufanele ulinde ukuba kukhululwe isiteshi, bese uqala ukudluliswa. Uma kwenzeka ukuthi abasebenzisi ezimbili kanyekanye azama ukuthatha umugqa ke emva kokuba engenzi lutho isikhathi esifushane, zama futhi kuze omunye wabo ngaphambi omunye. Ubani osithathile ikhompyutha isiteshi ezivamile Ungayisebenzisa ngejubane futhi egcwele. Lena algorithm esebenza kahle kakhulu umsebenzi lapho ukudluliswa kwedatha kuyashesha futhi kuthembekile.

Njengoba cishe kakade ukuyichaza, lolu hlobo inethiwekhi igama-Ethernet. Sebenzisa izinhlobo ezifanayo zokuxhumana endaweni encane, ezifana esakhiweni. Ngakho-ke uhlobo uxhumano zendawo. Inethiwekhi ye-Ethernet is zilandele izilinganiso ezithile omhlaba futhi wathatha cishe zonke eziphethe imakethe yomhlaba wonke ngo-ingxenye yayo.

Nge-radio-Ethernet yasungulwa muva nje. Lokhu indinganiso entsha, futhi usetshenziswa ezimbili. Okokuqala, it is a engenantambo wendawo endaweni inethiwekhi ngaphakathi kwezindonga ibhilidi noma esakhiweni. Okuyixazululayo inkinga ka 'ukuhamba elinganiselwe "ngaphakathi enhlanganweni - bonke abasebenzi ukufinyelela kwenethiwekhi eliphezulu. Okwesibili, Radio--Ethernet lwenethiwekhi ikuvumela ukuba unike amandla inkinga kunethiwekhi enkulu ababhalisile, futhi ukudluliswa kwedatha yomuntu siqu wenziwa ngokudlula wokugcina inkinga imayela. Igama elithi "imayela lokugcina" lisetshenziswa ekunqumeni lwenethiwekhi phakathi zokubhalisa kanye abaseduze kulo engeyokuqala "inethiwekhi enkulu." Ibanga empeleni ziyahlukahluka kusuka a amamitha ambalwa kuze kube 20-30 amakhilomitha.

Kuyinto engalungile imenze zokubhalisa umsakazo ngamunye "iphuzu ukuze ukhombe", ngoba kulesi simo, ngenxa yezizathu kwezobuchwepheshe, siteshi kuzoba kuyabiza, futhi ulwazi uzobe akhishwa kancane. Ngakho-ke kuphumelela kangcono ukuhlela isiteshi "iphuzu-to-multipoint" futhi uyenze itholakale ku-ababhalisile abaningi. Laba ababhalisile Ungayisebenzisa ikumodi ukushayisana, ezifana inethiwekhi ye-Ethernet. Wenza leso sinqumo ngoba wakhulelwa futhi ithuthukiswe muva nje, futhi iyahambisana ezivamile-Ethernet-ikhebula. muva-radio-Ethernet IEEE wathola Wekomidi Lomhlaba, futhi isinika ukuzinza lobuchwepheshe umsebenzi tekusebenta.