CWNP Certified wireless analusis professional(cwap) Sample Questions:

1. Which of the following is true regarding frame acknowledgement in an 802.11 wireless LAN?

A) PS-Poll frames may be acknowledged either with an ACK frame or with a Data frame
B) Directed management frames such as authentication and association requests are always acknowledged.
C) Data frame retransmissions are not acknowledged if they are fragmented.
D) Broadcast frames are acknowledged by all client stations participating in PCF mode.
E) Multicast frames are acknowledged by client stations participating in the multicast data stream only.
F) Data frames are not acknowledged if the Layer 4 protocol is TCP because TCP has its own ACK frames. UDP datagrams are always acknowledged.

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

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

3. An 802.11 Authentication frame includes information used to initiate a multi-frame exchange between a client station and an access point that ultimately results in the verification of the identity of the client station. Which of the following are fixed fields in the Authentication frame?

A) Algorithm number
B) Supported rates
C) Challenge text
D) Transaction sequence number
E) Contention-free parameter set

4. In the 802.11b standard, the PLCP header Service field has a Modulation Selection bit.
Which of the following are true regarding use of the Modulation Selection bit?

A) Based on the Modulation Selection bit in received Data frames, the receiving station can determine which modulation to use when sending acknowledgements.
B) The Modulation Selection bit is used to determine which modulation will be used to send the entire PPDU.
C) The Modulation Selection bit is used by the access point in CF-End frames to note which modulation will be used for Data frames in the contention period to follow.
D) The Modulation Selection bit is used to determine whether CCK or PBCC is in use for any speed where either could be used.
E) Based on the setting of the Modulation Selection bit and the value in the Signal field, the modulation to be used can be uniquely determined.

5. What is an advantage of being able to fragment MSDUs and MMPDUs on a wireless network?

A) Decreased retransmission overhead in a noisy RF environment.
B) Decreased translation time between 802.3 and 802.11 networks at the access point.
C) Increased throughput due to interference from other 802.11 stations.
D) Increased throughput in a clean RF environment
E) Decreased number of 802.11 control and management frames required for transmission.
F) Increased throughput in an 802.11b/g mixed mode environment.

Solutions: