Q27. What is encrypted within the third message of the 4-Way Handshake?

Q28. Where would you look in a packet trace file to identify the configured Minimum Basic Rate (MBR) of a BSS?

Q29. Which one of the these is the most important in the WLAN troubleshooting methodology among those listed?

Q30. Which common feature of a Spectrum Analyzer would be the best to help you locate a non-802.11 interference source?

Q31. When performing protocol analysis, you capture an 802.1 lac data frame on channel 52, transmitted at MCS 8.
At what data rate was the PHY Preamble transmitted?

Q32. The PHY layer provides framing by adding a header to create what type of data unit?

Q33. Prior to a retransmission what happens to the CWmax value?

Q34. The PHY layer provides framing by adding a header to create what type of data unit?

Q35. 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?

Q36. Which one of the following is required for Wi-Fi integration in laptop-based Spectrum Analyzer software in addition to the spectrum analysis adapter?

Q37. Which one of the following is not a valid acknowledgement frame?

Q38. In the 2.4 GHZ band, what data rate are Probe Requests usually sent at from an unassociated STA?

Q39. Finish the statement:
It is possible to distinguish between_______22 MHz transmissions and________20 MHz transmissions when looking at an FFT plot.

Q40. As a wireless network consultant you have been called in to troubleshoot a high-priority issue for one of your customers. The customer’s office is based on two floors within a multi-tenant office block. On one of these floors (floor 5) users cannot connect to the wireless network. During their own testing the customer has discovered that users can connect on floor 6 but not when they move to the floor 5. This issue is affecting all users on floor 5 and having a negative effect on productivity.
To troubleshoot this issue, you perform both Spectrum and Protocol Analysis. The Spectrum Analysis shows the presence of Bluetooth signals which you have identified as coming from wireless mice. In the protocol analyzer you see the top frame on the network is Deauthentication frames. On closer investigation you see that the Deauthentication frames’ source addresses match the BSSIDs of your customers APs and the destination address is FF:FF:FF:FF:FF:FF:FF.
What do you conclude from this troubleshooting exercise?

Q41. You are analyzing a packet decode of a Probe Request and notice the SSID element has a length of zero. What do you conclude about the transmitting STA?

Q42. A client is operating in an unstable RF environment. Out of five data frames transmitted to the client it only receives four. The client sends a Block Ack to acknowledge the receipt of these four frames but due to frame corruption the Block Ack is not received by the AP. Which frames will be retransmitted’

Q43. When configuring a long-term, forensic packet capture and saving all packets to disk which of the following is not a consideration?

Q44. In what scenario is Open Authentication without encryption not allowed based on the 802.11 standard?

Q45. 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?