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

質問 1

You must report on frame types seen on the WLAN. You want to list the frame types by both name and binary value.
What frame type is represented by the binary value 011010, which includes the Type and Subtype values?

（A）Authentication

（B）Association Request

（C）PS-Poll

（D）Beacon

正解：C 解答を投票する

質問 2

What does the value of the Listen Interval field in an Association request frame indicate?

（A）How long a STA performing active scanning will listen for Probe Responses before changing channels

（B）How often a STA will go off channel to look for other BSSs

（C）How long a STA waits for an Ack before retransmitting the frame

（D）How often a STA in power save mode wakes up to listen to Beacon frames

正解：D 解答を投票する

解説: (JPNTest メンバーにのみ表示されます)

質問 3

The network administrator at ABC Engineering has taken a large packet capture from one of their APs running in monitor mode. She has very little knowledge of 802.11 protocols but would like to use the capture file to evaluate the overall health and performance of their wireless network.
When she asks your advice, which tool do you recommend she opens the packet capture file with?

（A）Spectrum analyzer

（B）Python

（C）Capture visualization tool

（D）WLAN scanner

正解：C 解答を投票する

解説: (JPNTest メンバーにのみ表示されます)

質問 4

According to 802.11-2007, in what frame type(s) might you find the PMK Count and PMKID List fields?

（A）Authentication and Association Request and Response frames

（B）All frames that include the RSN IE

（C）EAPoL 4-Way Handshake frames

（D）Only (Re)Association Request frames

（E）Beacon and Probe Response frames

正解：D 解答を投票する

質問 5

Which one of the following is not an 802.11 Management frame?

（A）Authentication

（B）PS-Poll

（C）Action

（D）Beacon

正解：B 解答を投票する

解説: (JPNTest メンバーにのみ表示されます)

質問 6

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）Capture on the channel you think may be impacted by ACI and see if any frames are captured from adjacent channels

（B）Look at Retry counts

（C）Look at CRC errors

（D）Look for frames with a low signal strength value in the radio tap header

正解：A 解答を投票する

質問 7

What IEEE 802.11 technology is illustrated by the exhibit?

（A）A-MSDU

（B）A-MPDU

（C）TCP Fragment Bursting

（D）Jumbo frames

（E）Fragmentation

（F）U-APSD

正解：A 解答を投票する

質問 8

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）Capture from another AP in another BSS

（B）Directly in the middle of the AP and client STA

（C）Very near the client STA

（D）Very near the AP

正解：D 解答を投票する

質問 9

ABC International has installed a new smart ZigBee controlled lighting system. However, the network team is concerned that this new system will interface with the existing WLAN and has asked you to investigate the impact of the two systems operating simultaneously in the 2.4 GHz band. When performing Spectrum Analysis, which question could you answer by looking at the FFT plot?

（A）Is the ZigBee system causing an increase in WLAN retries?

（B）Is the ZigBee system using more the 50% of the available airtime?

（C）Do the ZigBee channels used by the lightning system overlap with the WLAN channels?

（D）Is the WLAN corrupting ZigBee system messages?

正解：C 解答を投票する

解説: (JPNTest メンバーにのみ表示されます)

質問 10

What is an AIFS?

（A）A variable Interframe Space introduced by 802.11e to help prioritize medium access for different Access Categories

（B）A medium access method introduced by 802.11n, but never implemented

（C）A form of aggregation performed at the PLCP sub-layer

（D）The shortest period of time a STA can sleep

正解：A 解答を投票する

解説: (JPNTest メンバーにのみ表示されます)

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

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