CWNP Certified wireless analusis professional(cwap) Sample Questions:

1. According to the IEEE 802.11 standard, what is one structural difference between a MAC Protocol Data Unit (MPDU) and a MAC Management Protocol Data Unit (MMPDU)?

A) The MPDU frame FCS field is 4 bytes, while the MMPDU frame FCS field is 8 bytes.
B) The MPDU header always places the BSSID in the first address field, but in the MMPDU the BSSID can be found in any of the address fields.
C) An MMPDU header may only contain three address fields, but an MPDU may have four address fields.
D) The MMPDU frame body is limited to 200 bytes, whereas the MPDU frame body can carry up to 2312 bytes.

2. Choose the correct pairing of IEEE 802.11 standards with their specification of supported preamble lengths.

A) 802.11a -long preamble support mandatory, short preamble support mandatory
B) 802.11 -long preamble support mandatory, short preambles not supported
C) 802.11b -long preamble support mandatory, short preamble support mandatory
D) 802.11g -long preamble support mandatory, short preamble support mandatory
E) 802.11b -long preamble support mandatory, short preamble support optional

3. Which of the following descriptions accurately describes IEEE 802.11 compliant Power Save mode operation in a DCF Basic Service Set?

A) When the access point's buffer is full, the access point wakes all client stations using a PS-Poll frame so that they can receive the data.
B) Following a period of time in a low power state, client stations wake themselves and automatically poll the access point for traffic using a PS-Poll frame.
C) Upon receiving traffic for a dozing station, the access point wakes the client station using a PS-Poll frame so that the client station can receive the data.
D) After waking at a schedule TBTT, client stations automatically send Null Function frames to the access point with the Power Management bit cleared.
E) After waking from a low power state, client stations listen for the next beacon to determine if sending a PS-Poll frame to the access point is necessary.

4. Some protocol analyzers have the ability to capture only MAC frame headers (sometimes called packet slicing), and others have the ability to update the capture display without saving the frames permanently (sometimes called stumbling mode). What are advantages of using these two features of a wireless protocol analyzer?

A) Analyzers with a small amount of frame buffer memory can be used.
B) Analyzers can be left running for long periods of time without running out of frame buffer space.
C) Analyzers can capture traffic on more channels simultaneously due to decreased overhead per channel.
D) Capturing, analyzing, and discarding headers allows more CPU cycles for real-time decoding and analysis.
E) Analyzers can use DRAM to store captured frames instead of storing files on a hard drive.

5. At what MAC layer transmission rate does an 802.11b access point send Probe Response frames?

A) At the highest basic rate configured on the access point.
B) At any rate supported by both the client station and the access point.
C) At the lowest basic rate configured on the access point.
D) Always at 1 Mbps.
E) At the highest rate supported by both the access point and client station.

Solutions: