CWNP Certified wireless analusis professional(cwap) Sample Questions:

1. An 802.11b PPDU's preamble consists of two fields and can collectively be considered
"long" or "short" by the 802.11b standard. Which of the following is true regarding the PLCP preamble?

A) When short preambles are being used, the Sync and SFD fields both consist of 16 bits.
Only access points have configurable preamble lengths.
B) Long and short preamble lengths are both variable depending on the modulation in use on the network, and access points always inform stations of the preamble length in use on the network.
C) A long preamble uses a Sync field of 128 bits, and both stations and access points may have configurable preamble lengths.
D) 802.11g stations associating to 802.11b access points must use the DSSS preamble length specified by the access point.
E) A short preamble uses a Sync field of 40 bits, and stations and access points must have matching preamble lengths in order to communicate.
F) An 802.11b access point that supports both long and short preambles may allow stations that are using different preamble lengths to communicate through it simultaneously.

2. What are the primary mechanisms used by an 802.11 BSS during a contention-free period to cause stations that are not the Point Coordinator to defer?

A) Null Function data frames using SIFS
B) Contention-Free Polling List broadcasts
C) All frames transmitted during the CFP have a Duration field value of 32,768
D) The Pseudorandom Backoff Timer in each station
E) CF Parameter Set elements in the Beacons
F) Point Coordination Function Interframe Space (PIFS)

3. In the frame decode shown, 1, 2, 5.5, and 11 Mbps are all shown as supported data rates.
1 and 2 Mbps are shown with (basic) beside them. What does (basic) mean in this context?

A) The highest data rate set to basic is automatically used to send broadcast traffic such as Beacon Management frames.
B) Basic rates are optional data rates, often used for assuring connectivity for those stations that are at a significant distance from the access point.
C) Basic rates are only used for multicast traffic, and do not affect unicast traffic.
D) Basic rates are those rates required by the access point to participate in a Basic Service Set.

4. Which statement accurately describes why the Traffic Indication Map (TIM) information element is not shown in this Beacon Management frame?

A) This Beacon was captured on channel 2 but was transmitted on channel 1. This caused a loss of information elements within the Beacon.
B) Beacons transmitted by 802.11 IBSS networks do not include TIMs.
C) This model of access point does not support 802.11 compliant Power Save mode.
D) This Beacon frame is using a DTIM instead of a TIM.
E) Beacons only contain TIMs when the Power Management bit in the Frame Control field of the MAC header is set to 1

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

A) 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.
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) 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.
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.

Solutions: