Chapter 28. Introduction to the TCP/IP Protocol

Chapter Syllabus

  • 28.1 Introduction to TCP/IP

  • 28.2 Building an IP Network

  • 28.3 TCP and UDP Protocols

  • 28.4 Ports and Sockets

Transmission Control Protocol/Internet Protocol (TCP/IP) is the most widely used protocol in computer networks in the world. All modern network operating systems support TCP/IP. It is a five-layer protocol where the lower four layers have the same functionality as the lower four layers of the OSI model. The fifth layer in the TCP/IP protocol is the application layer, which covers the upper three layers of the OSI model. All hosts in a TCP/IP network are assigned a unique address called an IP address. It is a 32-bit long number divided into four parts of 8 bits each. Each of these ...

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