最新的CWAP Wi-Fi Analysis認證 CWAP-404考試題庫

問題1

Which one of the following statements is not true concerning DTIMs?

A. Buffered Broadcast and Multicast traffic will be transmitted following a DTIM

B. DTIM stands for Delivery Traffic Indication Map

C. The DTIM interval can dictate when an STA will wake up to listen to beacon frames

D. Every Beacon frame must contain a DTIM

正確答案: D

說明：（僅 VCESoft 成員可見）

問題2

As the WLAN engineer in your organization, you must troubleshoot performance problems related to co- channel interference (CCI).
What is a good measurement of CCI impact in addition to the number of APs seen on a channel?

A. Retries

B. Non-Wi-Fi device count

C. The frequency used

D. Utilization

正確答案: C

問題3

What types of wireless systems are illustrated?

A. A Bluetooth v2.0 file transfer and a 40 MHz HT AP on channels 11, 7 (primary, secondary)

B. A 2.4 GHz cordless phone on channel 14 and a wireless RFID reader

C. An ERP IEEE 802.11 system using channel 6 and Bluetooth v1.2 discovery

D. An 802.11 HR/DSSS system using channel 2 and a digital FHSS phone

正確答案: C

問題4

What is used to respond with an uplink transmission to an MU-RTS trigger frame in the 802.11ax PHY?

A. HE MU PPDU

B. VHT PPDU

C. HE SU PPDU

D. HE TB PPDU

正確答案: D

說明：（僅 VCESoft 成員可見）

問題5

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. Roaming

B. Delta

C. Absolute

D. Relative

正確答案: A

說明：（僅 VCESoft 成員可見）

問題6

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

A. 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.

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. 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.

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. 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.

正確答案: E

問題7

802.11k Neighbor Requests and Neighbor Reports are sent in what type of Management Frames?

A. Beacon

B. Reassociation Request and Reassociation Response

C. RRM

D. Action

正確答案: D

說明：（僅 VCESoft 成員可見）

問題8

Which one of the following is not a valid reason for an AP to fail a STAs association?

A. AP is unable to handle additional associations

B. Requesting station has the wrong PSK

C. Does not support the specified authentication algorithm

D. Requesting station does not support all the required data rates

正確答案: B

問題9

Which one of the following statements describes the function of WMM Admission Control?

A. APs regulate the available bandwidth in an attempt to provide a guarantee of the amount of time that a STA has available to access the channel

B. APs control access to the wireless medium by polling STAs for data packets

C. APs guarantee Voice and Video access categories priority over the WLAN medium

D. Provides a new 802.11 Authentication method for Voice devices

正確答案: C

問題10

Recently, three rogue APs have been connected to the network and later discovered. You want to prevent future rogue AP installations as much as possible.
What is the first step to eliminating or reducing rogue APs on the network?

A. Enable rogue detection in the existing authorized APs

B. Use IPSec between every AP and the network infrastructure

C. Create a hash of the MAC addresses of all authorized devices and continually scan for non- matching hashes

D. Define a direct policy that stipulates the ramifications of installing unauthorized devices

正確答案: A

問題11

Why would a STA that supports 802.11k Radio Measurement send a Neighbor Request to an AP?

A. To request a list of neighboring STAs which enables the STA to better pick the right protection mechanisms

B. To learn about neighboring interference sources and tune its RF radio accordingly

C. To inform the current AP about the STA's intent to roam to a neighboring AP, ensuring a seamless handover

D. To request a list of neighboring APs which the STA can use as roaming candidates

正確答案: D

說明：（僅 VCESoft 成員可見）

問題12

A manager at a retail outlet has complained that an incident occurred allowing a STA to launch an attack against another STA connected to their public Wi-Fi hotspot. He has asked you to troubleshoot the situation and verify that all possible measured are being taken to prevent this.
What configuration should you check in the AP?

A. DNS settings

B. Captive portal Internet gateway

C. Inter-VAP filtering

D. Client-to-client direct communications

正確答案: D

說明：（僅 VCESoft 成員可見）

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