You have received reports of performance problems in a BSS. One specific user is indicating that her downloads are taking a very long time compared to other users around her.
You want to determine if the AP is sending frames multiple times to get through to the user's computer.
Where should you monitor with the protocol analyzer to see retries from the AP in this scenario?
A. Directly in the middle of the AP and client STA
B. Very near the AP
C. Very near the client STA
D. Capture from another AP in another BSS
正解:B
質問 2:
Finish the statement. It is possible to distinguish between _______and ______20 MHz transmissions when looking at an FFT plot.
A. OFDM and HT
B. HR/DSSS and ERP
C. HT and VHT
D. ERP and VHT
正解:A
解説: (Pass4Test メンバーにのみ表示されます)
質問 3:
Given the frame capture and the decode shown,

after which Beacons in the list shown (as indicated by the frame number in the leftmost column) would multicast traffic have been sent in this infrastructure BSS if multicast traffic had been queued for transmission at the access point? (Choose 2)
A. frame number 55
B. frame number 53
C. Framenumber 49
D. frame number 50
E. frame number 54
F. frame number 51
G. frame number 57
正解:A,F
質問 4:
802.11k Neighbor Requests and Neighbor Reports are sent in what type of Management Frames?
A. Beacon
B. Action
C. Reassociation Request and Reassociation Response
D. RRM
正解:B
解説: (Pass4Test メンバーにのみ表示されます)
質問 5:
WMM-PS trigger frames can be what type of IEEE 802.11 frames? (Choose 2)
A. Reassociation
B. QoS Action
C. QoS Data
D. QoS Null
E. CTS
F. PS-Poll
正解:C,D
質問 6:
You are attempting to work through a user complaint with the CWNP-recommended troubleshooting methodology.
What must be clearly identified in order to reduce the number of possible causes at step three?
A. The user name
B. The user's IP configuration
C. The device type
D. The problem
正解:D
質問 7:
In the 2.4 GHz band, what data rate are Probe Requests usually sent at from an unassociated STA?
A. 6 Mbps
B. MCS 0
C. The minimum basic rate
D. 1 Mbps
正解:C
解説: (Pass4Test メンバーにのみ表示されます)
質問 8:
Given: Adjacent Channel Interference (ACI) can cause frame corruption and poor performance in WLANs. You are using a protocol analyzer in the attempt to detect ACI.
What should you look for in such a scenario?
A. Look at CRC errors
B. Look at Retry counts
C. Capture on the channel you think may be impacted by ACI and see if any frames are captured from adjacent channels
D. Look for frames with a low signal strength value in the radio tap header
正解:C
Otsuka -
CWAP-404過去問を解く上で見開きに、解答があるのは非常に良い。解説もまとまってる。