TCP/IP Network Layer
Network Interface Layer
The application layer includes many protocols. The transport layer includes fewer, most notably, TCP and UDP. The TCP/IP network layer includes a small number of protocols, but only one major protocol: the Internet Protocol (IP). In fact, the name TCP/IP is simply the names of the two most common protocols (TCP and IP) separated by a /.
Internet Layer
IP provides several features, most importantly, addressing and routing. This section begins by comparing IP’s addressing and routing with another commonly ...
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