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3
netwOrk COnCePts and design
Objectives
• Understand network concepts and technologies.
•
Design a network with subnetting.
•
Construct local area networks.
3.1 Introduction
In Chapter 2, we discussed the protocols in each layer of the Transmission Control
Protocol/Internet Protocol (TCP/IP) architecture. In this chapter, we will rst explore
various types of networks. We will examine network devices and network media. We
will also take a closer look at network interface cards (NICs), switching devices, and
network routing devices. We will see how these devices are put together to physically
construct a network.
Before network hosts including computers and network devices can be physically
connected, each host on a network should be properly assig ...