Ethernet is a layer 2 data link protocol that is widely used with the TCP/IP protocol, which resides at layers 3 and 4. To understand network communications, it is essential to learn about the ...
The most ubiquitous example is the IP protocol in TCP/IP (see TCP/IP ... function of the dial-up telephone system. See layer 3 switch. Layer 2 is responsible for node-to-node validity and ...