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Introduction to Switching Concepts


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Introduction to Switching Concepts



How to Best Use This Chapter



Do I Know This Already? Quiz



Foundation Topics

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CLSC Exam Certification Guide

From: CLSC Exam Certification Guide
Author: Kevin Downes; Tim Boyles
Publisher: Cisco Press (Trade/52)
More Information

2. Introduction to Switching Concepts

The objectives of the Cisco LAN Switch Configuration (CLSC) exam are taken from the Cisco web site, at the Cisco career certification and training area. The following table shows the exam objectives covered in this chapter:




Describe the advantages of LAN segmentation.


Describe LAN segmentation using bridges.


Describe LAN segmentation routers.


Describe LAN segmentation using switches.


Name and describe two switching meth-ods.


Describe full- and half-duplex Ethernet operation.


Describe Token Ring switching con-cepts.

In the past, network designers had only a limited number of hardware options when purchasing a technology for their campus networks. Hubs were for wiring closets, and routers were for the data center or main telecommunications operations. The increasing power of desktop processors and the requirements of client-server and multimedia applications, however, have driven the need for greater bandwidth in traditional shared-media environments. These requirements are prompting network designers to replace hubs in their wiring closets with switches.

Switching is a technology that alleviates congestion in Ethernet, Token Ring, and Fiber Distributed Data Interface (FDDI) LANs by reducing traffic and increasing bandwidth. Such switches, known as LAN switches, are designed to work with existing cable infrastructures so that they can be installed with minimal disruption of existing networks.

How to Best Use This Chapter

By taking the following steps, you can make better use of your study time:

  • Keep your notes and the answers for all your work with this book in one place, for easy reference.

  • Take the quiz, and write down your answers. Studies show that retention is significantly increased through writing down facts and concepts, even if you never look at the information again.

  • Use the diagram in Figure 2-1 to guide you to the next step.

Figure 2-1. How to Best Use This Chapter in Preparation for the CLSC Exam

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