CWAP-404試験無料問題集（184題）「CWNP Certified Wireless Analysis Professional 認定」

出題：1

Given: ABC Company recorded the 2.4 GHz band with a spectrum analyzer prior to installing their ERP WLAN. Image-A is how the band appeared prior to the WLAN installation. Image-B is how the band appears now, and all channels on their WLAN have ceased to function.

What is the best explanation as to why their WLAN is no longer functioning properly?

A. A Terminal Doppler Weather Radar (TDWR) is causing a DFS response across the entire band.

B. A wideband RF power source is corrupting all IEEE 802.11 transmissions.

C. A manual site survey tool is actively testing the throughput of their WLAN.

D. A new microwave oven was installed in the cafeteria.

E. A malfunctioning IEEE 802.11 OFDM radio card is transmitting continuously.

正解：B 解答を投票する

出題：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. 1 and 2

D. 3 and 4

E. All of the plots

正解：A 解答を投票する

出題：3

As the WLAN administrator in your organization you are responsible for troubleshooting connection issues. Several STAs are connecting to the network, but are unable to communicate after connection. You suspect a DHCP problem. After capturing traffic on the wired-side of the AP, you want to view only DHCP traffic. What filter in Wireshark can be used for this purpose?

A. DHCPv6

B. DHCP

C. BOOTP

D. DHCPv4

正解：B 解答を投票する

出題：4

You are performing a multiple adapter channel aggregation capture to troubleshoot a VoIP roaming problem and would like to measure the roaming time from the last VoIP packet sent on the old AP's channel to the first VoIP packet sent on the new AP's channel. Which timing column in the packet view would measure this for you?

A. Delta

B. Absolute

C. Roaming

D. Relative

正解：C 解答を投票する

解説: (GoShiken メンバーにのみ表示されます)

出題：5

An RST frame should be acknowledged by which frame?

A. RTS-Ack

B. Block Ack

C. CTS

D. Ack

正解：C 解答を投票する

解説: (GoShiken メンバーにのみ表示されます)

出題：6

Which one of the following is not a valid acknowledgment frame?

A. Block Ack

B. CTS

C. Ack

D. RTS

正解：D 解答を投票する

解説: (GoShiken メンバーにのみ表示されます)

出題：7

As a WLAN consultant, you have been asked to troubleshoot a problem with a single wireless client station (Station-Z). Your customer informs you that other wireless client stations are not having problems with wireless connectivity, and that Station-Z is configured in the same manner as all other wireless client stations on the network. Station-Z is showing an unusually high retransmission count in its client utility statistics. Using a wireless protocol analyzer, where and how should you begin troubleshooting this problem? (Choose 2)

A. Position the analyzer near Station-Z. Analyze Station-Z's transmissions and acknowledgements.
Look for RF and obstacle-induced interference.

B. Position the analyzer near the access point. See if Station-Z's frames are reaching the access point and if so, analyze their signal strength.

C. Position the analyzer near Station-Z. Analyze the frames Station-Z is receiving, looking for delayed ACK frames.

D. Position the analyzer halfway between Station-Z and the access point. Analyze the data rate at which frames are sent and how long they take to be received.

E. Position the analyzer halfway between Station-Z and the access point. Measure the distance between Station-Z and the access point.

正解：A,B 解答を投票する

出題：8

Which statement accurately describes IEEE 802.11 Power Save operation in a Basic Service Set that does not support the QoS facility?

A. 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.

B. 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.

C. 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.

D. After waking at a scheduled TBTT, client stations send Null Function frames to the access point with the Power Management bit set back to zero.

E. 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.

正解：A 解答を投票する

出題：9

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 complaining user's station is retransmitting fragments many times likely due to nearby RF interference.

B. The complaining user's WLAN client utilities are configured with a small fragmentation threshold.

C. The access point is not signaling for protection (Protection = no) in the Beacons, but it should be.

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：B,E 解答を投票する

出題：10

You need to determine RF activity over time in a spectrum analyzer. It is to be able to see the activity and the amplitude of that activity.
What kind of view should be used?

A. Device listing

B. Channel listing

C. Real-time FFT

D. Swept spectrogram

正解：D 解答を投票する

CWAP-404試験無料問題集「CWNP Certified Wireless Analysis Professional 認定」