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CCENT/CCNA ICND1 Exam Guide: Introduction to Wireless LANs

Chapter Description

This chapter examines the basic concepts, standards, installation, and security options for some of the most common WLAN technologies today.

Exam Preparation Tasks

Review All the Key Topics

Review the most important topics from this chapter, noted with the key topics icon. Table 11-11 lists these key topics and where each is discussed.

Table 11-11. Key Topics for Chapter 11

Key Topic Element

Description

Page Number

Table 11-2

WLAN standards organizations and their roles

304

Table 11-3

Comparison of 802.11a, 802.11b, and 802.11g

305

Table 11-4

WLAN modes, their formal names, and descriptions

307

Table 11-5

Unlicensed bands, their general names, and the list of standards to use each band

309

Figure 11-6

DSSS frequencies, showing the three nonoverlapping channels

310

List

WLAN configuration checklist

315

List

Common WLAN installation problems related to the work done in the site survey

319

List

Other common WLAN installation problems

319

Table 11-8

Common WLAN security threats

321

Table 11-9

WLAN security standards

322

Table 11-10

Comparison of WLAN security standards

326

Complete the Tables and Lists from Memory

Print a copy of Appendix H, "Memory Tables" (found on the CD), or at least the section for this chapter, and complete the tables and lists from memory. Appendix I, "Memory Tables Answer Key," also on the CD, includes completed tables and lists for you to check your work.

Definitions of Key Terms

Define the following key terms from this chapter and check your answers in the glossary:

  • 802.11a,
  • 802.11b,
  • 802.11g,
  • 802.11i,
  • 802.11n,
  • access point,
  • ad hoc mode,
  • Basic Service Set (BSS),
  • CSMA/CA,
  • Direct Sequence Spread Spectrum,
  • Extended Service Set (ESS),
  • Frequency Hopping Spread Spectrum,
  • infrastructure mode,
  • Orthogonal Frequency Division Multiplexing,
  • Service Set Identifier (SSID),
  • Wi-Fi Alliance,
  • Wi-Fi Protected Access (WPA),
  • wired equivalent privacy (WEP),
  • WLAN client,
  • WPA2