Part II-1. TCP/IP NETWORK INTERFACE LAYER PROTOCOLS
TCP/IP LOWER-LAYER CORE PROTOCOLS
The TCP/IP protocol suite is largely defined in terms of the protocols that constitute it, and several dozen are covered in this book. Most of the critical protocols of the suite function at the lower layers of the OSI Reference Model (covered in Part I-2): layers 2, 3 and 4, which correspond to the network interface, Internet, and transport layers in the TCP/IP model architecture (described in Part I-3). Included here are the all-important Internet Protocol (IP) at layer 3 and Transmission Control Protocol (TCP) at layer 4, which combine to give TCP/IP its name.
Due to the importance of these and other TCP/IP protocols at the lower layers, this is the largest ...
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