Certified Wireless Analysis Professional - CWAP-405 Exam Practice Test

Question 1

Where, in a protocol analyzer, would you find an indication that a frame was transmitted as part of an A-MPDU?

A. A-MPDU flag in the QoS Control Field

B. The Aggregation flag in the Radio Tap Header

C. A-MPDU flag in the Frame Control Field

D. The HT Operation Element

Correct Answer: B

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Question 2

Explain the protocol behavior that can be known in the following graphic?

A. The data frames are missing because the capture adaptor does not support the PHY rate being used to transmit the data.

B. Only the CTS frames are being acknowledged. This is normal behavior.

C. Only the CTS frames are being acknowledged. This indicates a problem with the wireless client.

D. Single Channel Architecture is in use.

Correct Answer: D

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Question 3

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

A. MCS 0

B. The minimum basic rate

C. 1 Mbps

D. 6 Mbps

Correct Answer: C

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Question 4

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?

A. Absolute

B. Roaming

C. Relative

D. Delta

Correct Answer: D

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Question 5

Why would a STA that supports 802.11k Radio Measurement send a Neighbor Request to an AP?

A. To request a list of neighboring APs which the STA can use as roaming candidates

B. To learn about neighboring interference sources and tune its RF radio accordingly

C. To inform the current AP about the STA's intent to roam to a neighboring AP, ensuring a seamless handover

D. To request a list of neighboring STAs which enables the STA to better pick the right protection mechanisms

Correct Answer: A

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Question 6

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 than 2% of all packets are retransmissions. You move to capture packets by the AP and, while the retry rate is still less than 2%, 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 portable analyzer is too close to the AP causing CCI, blinding the AP to the client's packets

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

Correct Answer: B

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Question 7

The Retry subfield is found in which IEEE 802.11 frame field?

A. Data Control field

B. Frame Control field

C. QoS Control field

D. Protocol Order field

E. Sequence Control field

F. MAC Service Data Unit field

Correct Answer: B

Question 8

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

A. Supported Rates & Extended Supported Rates elements in a Beacon frame

B. In the Minimum Basic Rate Element in a Beacon frame

C. In the MBR Information Element in an Association Response frame

D. In the MBR Action frame

Correct Answer: A

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CWNP Certified Wireless Analysis Professional - CWAP-405 Exam Practice Test

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