CWAP-404 Dumps Released – Best Study Materials for Certified Wireless Analysis Professional (CWAP) Certification

1. Which one of the following should be the first step when troubleshooting a WLAN issue?

2. Which one of the best following is an advantage of using display filters instead of capture-time filters?

3. Using a portable analyzer you perform a packet capture next to a client STA and you can see that the STA is associated to a BSS. You observe the STA sending packets to the AP and the AP sending packets to the STA. Less the 2% of all packets are retransmissions. You move to capture packets by the AP and, while the retry rate is still very low, you now only see unidirectional traffic from the AP to the client.

How do you explain this behavior?

4. Given a protocol analyzer can decrypt WPA2-PSK data packets providing the PSK and SSID are configured in the analyzer software.

When performing packet capture (in a non-FT environment) which frames are required in order for PSK frame decryption to be possible?

5. When configuring a long term, forensic packet capture and saving all packets to disk which of the following is not a consideration?

6. You are performing a multiple adapter channel aggregation capture to troubleshoot a VoIP roaming problem and would like to measure the roaming time from the last VoIP packet sent on the old AP’s channel to the first VoIP packet sent on the new AP’s channel.

Which timing column in the packet view would measure this for you?

7. Protocol analyzers may present field values in either binary, decimal or hexadecimal.

What precedes a

hexadecimal value to indicate it is hexadecimal?

8. Which one of the these is the most important in the WLAN troubleshooting methodology among those listed?

9. The network administrator at ABC Engineering has taken a large packet capture from one of their APs running in monitor mode. She has very little knowledge of 802.11 protocols but would like to use the capture file to evaluate the overall health and performance of their wireless network. When she asks your advice, which tool do you recommend she opens the packet capture file with?

10. 802.11k Neighbor Requests and Neighbor Reports are sent in what type of Management Frames?

11. Which one of the following is required for Wi-Fi integration in laptop-based Spectrum Analyzer software?

12. You’re the WLAN administrator for a large retailer based at the HQ in New York. The London-based office has been complaining about WLAN disconnections around lunch time each day. You suspect this might be interference from the staff microwave, how might you test your theory from the New York office?

13. ABC International has installed a new smart ZigBee controlled lighting system.

However, the network team is concerned that this new system will interface with the existing WLAN and has asked you to investigate the impact of the two systems operating simultaneously in the 2.4 GHz band. When performing Spectrum Analysis, which question could you answer by looking at the FFT plot?

14. In a Spectrum Analyzer the Swept Spectrogram plot displays what information?

15. You have installed a new 802.11ac WLAN configured with 80 MHz channels. Users in one area are

complaining about poor performance. This area is currently served by a single AP. You take a spectrum

analysis capture in the poor performing areA. While examining the waterfall plot you notice the airtime

utilization is higher on the first 20 MHz of the 80 MHz channel when compared to the rest of the channel.

What do you conclude?

16. Which common feature of a Spectrum Analyzer would be the best to help you locate a non-802.11

interference source?

17. A manufacturing facility has installed a new automation system which incorporates an 802.11 wireless network. The automation system is controlled from tablet computers connected via the WLAN.

However, the automation system has not gone live due to problem with the tablets connecting to the WLAN. The WLAN vendor has been onsite to perform a survey and confirmed good primary and secondary coverage across the facility. As a CWAP you are called in to perform Spectrum Analysis to identify any interference sources. From the spectrum analysis, you did not identify any interference sources but were able to correctly identify the issue.

Which of the following issues did you identify from the spectrum analysis?

18. Finish the statement. It is possible to distinguish between _______and ______20 MHz transmissions when looking at an FFT plot.

19. What is the function of the PMD sub-layer?

20. What is the function of the PHY Preamble?