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CWAP Certified Wireless Analysis Professional Official Study Guide: Exam PW0-270

ISBN: 978-0-470-76903-4
696 pages
March 2011
CWAP Certified Wireless Analysis Professional Official Study Guide: Exam PW0-270 (0470769033) cover image


The official study guide for the Certified Wireless Analysis Professional certification from CWNP

Four leading wireless experts thoroughly prepare you for the vendor-neutral CWAP exam administered by CWNP, the industry leader for enterprise Wi-Fi training and certification.  This official study guide not only covers all exam objectives for the CWAP exam, it also prepares you to administer and troubleshoot complex enterprise WLAN environments.

  • Covers all exam objectives for the Certified Wireless Analysis Professional (CWAP) exam
  • Covers 802.11 physical (PHY) and 802.11 MAC layer frame formats and technologies
  • Also covers 802.11 operation and frame exchanges, spectrum analysis and troubleshooting, and protocol analysis and troubleshooting
  • Includes hands-on exercises using the Wireshark protocol analyzer and Fluke Network’s Spectrum analyzer software
  • Companion CD includes two practice exams and over 150 electronic flashcards

Advancing your skills as a wireless administrator professional? Start by passing the CWAP exam with the complete test prep you’ll find in this practical study guide and CD.

Note: CD-ROM materials for eBook purchases can be downloaded from


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Table of Contents

1 802.11 Overview.

2 802.11 Physical (PHY) Layer Frame Format.

3 802.11 MAC Sub-layer Frame Format.

4 802.11 Management Frames.

5 802.11 Control Frames.

6 802.11 Data Frames.

7 802.11 Medium Contention.

8 802.11 Power Management.

9 802.11 Security.

10 802.11n - HT analysis.

11 Spectrum Analysis - Layer 1.

12 Protocol Analyzer Operation & Troubleshooting.

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Author Information

David A. Westcott, CWNE #7, is an independent consultant and technical trainer with over 25 years of experience. He has been a certified trainer and course developer for over 17 years, working with government agencies, corporations, and universities. David D. Coleman, CWNE #4, is the Global Training Manager for Aerohive Networks, creators of the award-winning cooperative control wireless LAN (WLAN) architecture. He is the author of numerous white papers and books about Wi-Fi technology. Peter Mackenzie, CWNE #33, is the Head of Technical Operations at MarQuest, and has many years of experience providing wireless network training and consultancy specializing in network analysis and troubleshooting. Ben Miller, CWNE #12, is Course Director for the Global Knowledge Wireless Curriculum, where he oversees course development, instructor readiness, and equipment testing for vendor-neutral wireless training.

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Download TitleSizeDownload
Download WiFi Alliance White Papers not included on CD (page 24) 1.92 MB Click to Download
Download ch04_capture1.pcap (Exercise 4.1, page 146) 161.11 KB Click to Download
Download ch04_capture2.pcap (Exercise 4.2, page 152) 44.53 KB Click to Download
Files missing on CD: Chapter 9 PCAP files 85.79 KB Click to Download
Chapter 11 image files 4.89 MB Click to Download
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Do you think you've discovered an error in this book? Please check the list of errata below to see if we've already addressed the error. If not, please submit the error via our Errata Form. We will attempt to verify your error; if you're right, we will post a correction below.

ChapterPageDetailsDatePrint Run
CD CD Flashcard corrections
Due to a formatting error, several of the flashcards on the CD that shipped with the first printing of the book have incorrect questions and answers.

Flashcard 74:
Question: What data frames do carry data?
Answer: Data, Data+CF-Ack, Data+CF-Poll, Data+CF-Ack+CF-Poll, Qos Data, Qos Data+CF-Ack, Qos Data+CF-Poll, QoS Data+CF-Ack+CF-Poll

Flashcard 75:
Question: How many address fields are in an 802.11 frame?
Answer: Three, sometimes four

Flashcard 76:
Question: What are the names of the 4 802.11 address fields?
Answer: Address1, Address2, Address3, Address4

Flascard 77:
Question: What are the five logical uses of the address fields?
Answer: Source address, destination address, transmitter address, receiver address, basic service set identifier (BSSID)
4/28/11 1st
1 24 White Papers missing from CD: Wi-Fi Alliance and Wi-Fi CERTIFIED
In the sidebar titled ?Wi-Fi Alliance and Wi-Fi CERTIFIED? there is reference to a number of White Papers included on the CD. These White Papers were mistakenly left off the first printing CD. They can be downloaded from this book?s Resources & Downloads page.
4/22/11 1st
2 52 Omission in Figure 2.11
ISM Channel 165, referred to in the preceeding paragraph, was left out of the figure. The center frequency of Channel 165 is 5.825 GHz.
11/4/11 1st
4 145-6 Correction to Exercises 4.1 and 4.2: instructions for downloading and installing Wireshark
The Wireshark application is not included on the CD as indicated in the book. For the explanation and steps 1-4 of Exercise 4.1, Viewing an Association Sequence, on pages 145-146, please replace the text in the book with the following:

In this exercise, you will use a protocol analyzer to view 802.11 data frames encrypted with CCMP. The following directions should assist you with locating, downloading, and install- ing Wireshark. If you are familiar with another protocol analyzing software, feel free to use it to perform this lab. If you have already installed Wireshark, you can skip steps 1?4.
  1. In your web browser, go to the Wireshark website:
  2. Click the Download Wireshark button to locate the installation file, and download the file that is appropriate for your operating system.
  3. After downloading the file, double-click it to proceed with the installation, and follow the installation directions.
4/19/11 1st
4 146 Missing files on the CD: Exercise 4.1
In step 4 of Exercise 4.1, reference is made to the following file on the companion CD: ch04_capture1.PCAP. The file was mistakenly left off the CD, and can be found at this book?s Resources and Downloads page.

4/22/11 1st
4 152 Missing files on the CD: Exercise 4.2
In step 4 of Exercise 4.2, reference is made to the following file on the companion CD: ch04_capture2.PCAP. The file was mistakenly left off the CD, and can be found at this book?s Resources and Downloads page.
4/22/11 1st
9 295-7 Missing PCAP Files: Exercise 9.1
In Exercise 9.1, there is mention of a number of PCAP files on the companion CD: OPEN_SYSTEM_AUTHENTICATION.PCAP, SHARED_KEY_AUTHENTICATION_ENCRYPTED.PCAP, and SHARED_KEY_AUTHENTICATION_DECRYPTED.PCAP. These files were mistakenly left off the CD, and can be found at this book?s Resources and Downloads page.
4/25/11 1st
11 441 Images missing from files on CD
On page 441, there is mention of color images of spectrum analyzers included on the CD. Those images were mistakenly left off the first printing's CD. The can be found on this book's Resources and Downloads page.
3/31/11 1st
12 535 Correction to Exercise 12.1: instructions for downloading OmniPeak Enterprise
In Exercise 12.1, there is a reference to a demo version of OmniPeak Enterprise included on the CD. Due to permission issues, OmniPeak Enterprise cannot be included on the demo. Users are asked to download the software from WildPackets? website at Follow these steps:
  1. Open your web browser and go to WildPacket's website at
  2. On the home page, click on the Download OmniPeak Now link and follow the instructions.
4/22/11 1st
12 536 Text correction: Incorrectly named file in Exercise 12.1
In step 13 of Exercise 12.1, there is a reference to a file called EAPauth2.apc. That file should actually be called LEAPauth2.apc.
4/22/11 1st
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