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VLANs

   

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VLANs

  

 

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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

3. VLANs

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:

Objective

Description

14

Define VLANs.

15

Name seven reasons to create VLANs.

16

Describe the role switches play in the creation of VLANs.

17

Describe VLAN frame filtering and VLAN frame tagging.

18

Describe how switches can be used with hubs.

19

Name the five components of VLAN implementations.

20

Describe static and dynamic VLANs.

21

Describe the VLAN technologies.

22

Describe Token Ring VLANs.

23

Describe Cisco's VLAN architecture.

Virtual local-area networks (VLANs) offer significant cost and performance benefits for a majority of the LANs installed today. Network managers realize these benefits as they migrate to switched LAN architectures across the enterprise. And with VLANs working as an integral part of ATM architectures, the concept and much of the technology have been designed into LAN-based switches that offer similar benefits across shared-LAN backbones. In addition, end users' applications need not change to realize these benefits: As part of switching architecture, VLANs are invisible to end users. Finally, VLANs are more than simply a shared hub, routing, switching, or network management solution: The combination of all these components provides powerful segmentation and efficient administration across the network.

This chapter provides an introduction to VLANs and switched internetworking, compares traditional shared LAN configurations with switched LAN configurations, and discusses the benefits of using a switched virtual LAN architecture.

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 3-1 to guide you to the next step.

Figure 3-1. How to Best Use This Chapter in Preparation for the CLSC Exam

 

   

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