Wireless LANs (WLANs) fill a particularly important role in providing network access to end users. In particular, WLANs allow the user to communicate over the network without requiring any cables, enabling mobile devices while removing the expense and effort involved in running cables.
This chapter examines the basics of WLANs. In particular, the first section introduces the concepts, protocols, and standards used by many of the most common WLAN installations today. The chapter then examines some basic installation steps. The last major section looks at WLAN security, which is particularly important because the WLAN signals are much more susceptible to being intercepted by an attacker than Ethernet LANs. The chapter also includes a helpful "do I know this already" quiz, to determine whether you need to read the full chapter or can move ahead to the exam preparation section.
Read the rest of Wireless LANs in this PDF.
About the book: CCNA Official Exam Certification Library, Third Edition, is the newest edition of the all-time best-selling CCNA self-study preparation package. This comprehensive review and practice package is designed for the latest CCNA® 640-802 exams. The two books contained in this package, CCENT/CCNA ICND1 Official Exam Certification Guide, Second Edition, and CCNA ICND2 Official Exam Certification Guide, Second Edition, present complete reviews and a more challenging and realistic preparation experience. The books are updated to cover all the new 640-802 exam objectives, such as security, wireless, IPv6, and troubleshooting.
Excerpted from CCNA Official Exam Certification Library, Third Edition by Wendell Odom (ISBN-10: 1-58720-183-6; ISBN-13: 978-1-58720-183-7). Copyright © 2008, Cisco Press. All rights reserved.
