The TCP/IP model is a four-layer networking model used for internet communication, consisting of Application, Transport, Internet, and Network Interface layers.

Elaboration:

• More practical than the OSI model and is the foundation of the internet.
• Includes protocols like TCP, UDP, IP, and ICMP.
• Works with both IPv4 and IPv6.

Example:

When you send an email, the TCP/IP stack ensures the message is transmitted and received correctly over the internet.