Which one of the following is not a valid reason for an AP to fail a STAs association?

1. A. Requesting station has the wrong PSK
2. B. Does not support the specified authentication algorithm
3. C. AP is unable to handle additional associations
4. D. Requesting station does not support all the required data rates

Correct Answer: A

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?

1. A. Delta
2. B. Absolute
3. C. Roaming
4. D. Relative

Correct Answer: C

What does the value of the Listen Interval field in an Association request frame indicate?

1. A. How long a STA performing active scanning will listen for Probe Responses before changing channels
2. B. How often a STA will go off channel to look for other BSSs
3. C. How often a STA in power save mode wakes up to listen to Beacon frames
4. D. How long a STA waits for an Ack before retransmitting the frame

Correct Answer: C
how often a STA in power save mode wakes to listen to Beacon management frames.

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

1. A. A supported WLAN adaptor with a customized driver
2. B. Any 802.11 wireless adaptor
3. C. A dual radio spectrum analyzer card
4. D. SNMP read credentials to the WLAN controller or APs

Correct Answer: C

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?

1. A. There is a transmit power mismatch between the client and the AP and while the client can hear the Aps traffic, the AP cannot hear the client.
2. B. The portable analyzer has a lower receive sensitivity than the AP and while it can’t capture the packets from the client STA, the AP can receive them OK.
3. C. The STA is transmitting data using more spatial streams than the potable analyzer can support
4. D. The portable analyzer is too close to the AP causing CCI, blinding the AP to the client’s packets

Correct Answer: B