May 2012
Intermediate to advanced
768 pages
21h 7m
English
book
CWNA: Certified Wireless Network Administrator Official Study Guide: Exam PW0-105, 3rd Edition
by David D. Coleman, David A. Westcott
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Chapter 8
802.11 Medium Access
In this chapter, you will learn about the following:
CSMA/CA vs. CSMA/CD
Collision detection
Distributed Coordination Function (DCF)
Interframe space (IFS)
Duration/ID field
Carrier sense
Random back-off timer
Point Coordination Function (PCF)
Hybrid Coordination Function (HCF)
Enhanced Distributed Channel Access (EDCA)
HCF Controlled Channel Access (HCCA)
Block acknowledgment (BA)
Wi-Fi Multimedia (WMM)
Airtime Fairness
One of the difficulties we had in writing this chapter was that in order for you to understand how a wireless station gains access to the media, we have to teach more than what is needed for the CWNA exam. The details are needed to grasp the concepts; however, it is the concepts that you will be ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.