Hub Taw Qhia

Ib qho khoom siv uas txuas ntau Ethernet twisted khub cables lossis fiber ntau optic cables ua ke ntawm tib lub cev nruab nrab. Lub hub yog txheej txheej ntawm lub cev uas ua haujlwm hauv OSI qauv. Nws tuaj yeem pom tau tias muaj ntau qhov chaw nres nkoj relay, thiab yog tias nws pom kev sib tsoo, nws yuav xa cov teeb liab thaiv.
Hubs feem ntau tuaj nrog BNC thiab / lossis AUI adapters los txuas rau ib txwm 10BASE2 lossis 10BASE5 tes hauj lwm.
Vim qhov tseeb tias lub hub yuav rov tsim dua lossis nthuav tawm cov teeb liab digital uas tau txais, thiab tom qab ntawd xa nws los ntawm txhua qhov chaw nres nkoj ntawm lub hub, muaj feem ntau ntawm cov teeb liab sib tsoo, thiab cov teeb liab kuj tseem yuav raug eavesdropped. Qhov no txhais tau hais tias tag nrho cov khoom siv txuas nrog lub hub koom nrog tib lub chaw sib tsoo thiab tshaj tawm xov xwm, yog li feem ntau cov hubs tau hloov los ntawm cov keyboards.