An RST frame should be acknowledged by which frame?

A. Ack

B. CTS

C. Block Ack

D. RTS-Ack

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?

A. Authentication

B. Reassociation

C. 4-Way Handshake

D. Probe Response

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

A. Requesting station has the wrong PSK

B. Does not support the specified authentication algorithm

C. AP is unable to handle additional associations

D. Requesting station does not support all the required data rates

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?

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.

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.

C. The STA is transmitting data using more spatial streams than the potable analyzer can support

D. The portable analyzer is too close to the AP causing CCI, blinding the AP to the client's packets

Which one of the following is not an 802.11 Management frame?

A. Action

B. Authentication

C. PS-Poll

D. Beacon

Which one of the following statements is not true concerning DTIMs?

A. Buffered Broadcast and Multicast traffic will be transmitted following a DTIM

B. The DTIM interval can dictate when an STA will wake up to listen to beacon frames

C. DTIM stands for Delivery Traffic Indication Map

D. Every Beacon frame must contain a DTIM

Which one of the statements regarding the Frame Control field in an 802.11 MAC header is true?

A. Only Control frames have a Frame Control field

B. The Frame Control field contains three sub-fields and eight one-bit flags

C. The Frame Control field is used to communicate the duration value

D. The Frame Control field is always set to 0

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

A. RRM

B. Action

C. Beacon

D. Reassociation Request and Reassociation Response

A PHY Header is added to the PSDU at which sub-layer?

A. LLC

B. MAC

C. PLCP

D. PMD

You are troubleshooting a client that is experiencing slow WLAN performance. As part of the troubleshooting activity, you start a packet capture on your laptop close to the client device. While analyzing the packets, you suspect that you have not captured all packets transmitted by the client. By analyzing the trace file, how can you confirm if you have missing packets?

A. Look for gaps in the sequence number in MAC header

B. Protocol Analyzers show the number of missing packets in their statistics view

C. Retransmission are an indication of missing packets

D. The missing packets will be shown as CRC errored packets