最新なCWAP PW0-270問題集（60題）、真実試験の問題を全部にカバー！

質問 1：
ABC Company's WLAN administrator is getting complaints from one user that his WLAN throughput is sluggish compared to other users in his area. The administrator takes his diagnostics laptop, which has a wireless protocol analyzer installed, to the area where the complaining user works. The administrator uses the PING utility to test connectivity from the complaining user's wireless client station to another wireless client station across the closest access point, while capturing the wireless frames. The administrator sees what is displayed in this screenshot.

From this screenshot, which statements can you conclude to be TRUE that are related to the complaining user's throughput problem? (Choose 2)
A. The access point is not signaling for protection (Protection = no) in the Beacons, but it should be.
B. The complaining user's station is retransmitting fragments many times likely due to nearby RF interference.
C. The complaining user's WLAN client utilities are configured with a small fragmentation threshold.
D. The complaining user's wireless client station should be using RTS/CTS as a protection mechanism, but it is not.
E. The access point and other stations are using ERP-OFDM modulation, and the complaining user's wireless client station is using HR/DSSS modulation.
正解：C,E

質問 2：
Using the exhibit as a reference,

which spectrum plots display, in real time, the value of RF amplitude as a function of radio frequency?
A. 1 and 3
B. 1, 3, and 4
C. All of the plots
D. 3 and 4
E. 1 and 2
正解：A

質問 3：
In the frame decode shown, there are two sets of supported data rates. 1, 2, 5.5, and 11 Mbps are all shown as "basic" data rates, and 6, 9, 12, 18, 24, 36, 48, and 54 Mbps are shown simply as supported data rates.

What is true of "basic" data rates in this context?
A. The AP requires all client stations to support Basic rates in order to associate to its BSS.
B. Basic rates are optional data rates for the BSS, often used for assuring connectivity for legacy stations.
C. Basic rates are only used for multicast traffic, and do not affect unicast traffic.
D. Basic rates are defined in an AP's service set to specify mandatory data rates for all retry frames.
E. The highest data rate set to Basic is automatically used to send broadcast traffic such as Beacon frames.
正解：A

質問 4：
Given the screenshot shown,

Choose the statement that accurately describes what is being seen by this protocol analyzer.
A. Three access points are on the same channel in the same physical area.
B. Three wireless stations are participating in an Ad Hoc WLAN.
C. One access point is using the 802.11 round robin Beacon feature.
D. A Single Channel Architecture (SCA) WLAN solution has three WLAN profiles configured
正解：B

質問 5：
The IEEE 802.11 Dynamic Frequency Selection (DFS) service is capable of performing what functions? (Choose 2)
A. Testing channels for radar before using a channel and while operating in a channel
B. Establishing an interference baseline on all 2.4 GHz channels
C. Suspending operations on a channel with high IEEE 802.11 co-channel interference
D. Using modulation switching techniques to avoid interfering with radar systems
E. Requesting and reporting of measurements in the current and other channels
正解：A,E

質問 6：
According to the 802.11n-2009 amendment, what security requirement is specified for HT BSSs?
A. HT BSSs must mandatorily support 802.11r FT.
B. HT BSSs are prevented from supporting WEP.
C. All unicast traffic transmitted by an HT station and destined to an HT station must use AESCCMP.
D. TKIP cannot be supported in an HT BSS.
E. In an RSN, HT stations may not communicate with one another using TKIP.
正解：E