Iyini i-IEEE 802.3?

I-IEEE 802.3 iyiqembu elisebenzayo elabhala isethi evamile ye-Institute of Electrical and Electronics Engineers (IEEE), echaza isilawuli sokufinyelela okumaphakathi (MAC) kuzo zombili izendlalelo zesixhumanisi esibonakalayo nedatha ye-Ethernet enezintambo. Lokhu ngokuvamile ubuchwepheshe benethiwekhi yendawo (LAN) enezinhlelo zokusebenza zenethiwekhi yendawo ebanzi (WAN). Sungula ukuxhumana ngokomzimba phakathi kwama-node namadivayisi wengqalasizinda (amahabhu, amaswishi, amarutha) ngezinhlobo ezahlukene zezintambo zethusi noma ze-optical

I-802.3 ubuchwepheshe obusekela ukwakhiwa kwenethiwekhi ye-IEEE 802.1. 802.3 futhi ichaza indlela yokufinyelela ye-LAN kusetshenziswa i-CSMA/CD.

Iyini i-Subnet Mask?

Imaski ye-subnet ibizwa nangokuthi imaski yenethiwekhi, imaski yekheli, noma imaski yenethiwekhi engaphansi. Ibonisa ukuthi yimaphi amabhithi ekheli lasesizindeni se-inthanethi ahlonza i-subnet yomsingathi nokuthi imaphi amabhithi ahlonza i-bitmask yomsingathi. Imaski ye-subnet ayikwazi ukuba khona iyodwa. Kufanele isetshenziswe ngokuhambisana nekheli le-IP.

Imaski ye-subnet yikheli elingu-32-bit elivala ingxenye yekheli le-IP ukuze lihlukanise i-ID yenethiwekhi ku-ID yomsingathi, futhi libonisa ukuthi ingabe ikheli lasesizindeni se-inthanethi liku-LAN noma i-WAN.