CWAP-405無料問題集「CWNP Certified Wireless Analysis Professional」

質問 1

You have deployed a new 802.11ac WLAN for a customer who wants to take advantage of
802.11ac standardized Transmit Beamforming. After the installation you perform a protocol capture to confirm Transmit Beamforming is operating as expected. When analyzing the protocol exchange you observe the beamformer transmits a VHT NDP Announcement frame but you never see the transmitted NDP. What do you conclude from this behavior?

（A）NDPs are PHY PPDUs which contain no MPDU and therefore will not be displayed in a protocol analyzer.

（B）This behavior is non-standard and is likely a bug with the current driver.

（C）This is normal, 802.11ac includes the NDP within the VHT NDP Announcement.

（D）This indicates the beamformer is misconfigured.

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)

質問 2

Which one of the following is required for Wi-Fi integration in laptop-based Spectrum Analyzer software in addition to the spectrum analysis adapter?

（A）A firmware upgrade for the spectrum analysis adapter

（B）SNMP read credentials to the WLAN controller or APs

（C）A directional antenna

（D）An 802.11 wireless adaptor

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

Which statement is true regarding VHT Transmit Beamforming?

（A）The beamformee calculates both the feedback and steering matrix

（B）The beamformee calculates the feedback matrix and the beamformer calculates the steering matrix

（C）The beamformee calculates the steering matrix and the beamformer calculates the feedback matrix

（D）The beamformer calculates both the feedback and steering matrix

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 4

Which one of the following cannot typically be determined using a Spectrum Analyzer without Wi- Fi integration?

（A）Data Rate

（B）Channel Utilization

（C）Device Location

（D）SNR

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)

質問 5

When a data frame is encrypted with WPA2, to which portion of the frame is the encryption applied?

（A）Frame body and MAC Header

（B）Frame body including the LLCPDU

（C）Frame body excluding the LLCPDU

（D）The whole MPDU

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

A STA utilizing DCF for medium access, that has been waiting for the medium to become free, must wait for which interframe space following the ACK of the previous frame transmission?

（A）AIFS

（B）PIFS

（C）DIFS

（D）EIFS

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 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 the frames Station-Z is receiving, looking for delayed ACK frames.

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

（C）Position the analyzer halfway between Station-Z and the access point. Measure the distance between Station-Z and the access point.

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

正解：B、E 解答を投票する

質問 8

Which part of a QoS Data frame can be used to advertise its QoS priority?

（A）QoS Control

（B）IP header

（C）WMM Information Element

（D）802.1Q VLAN Tag

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-405 無料問題集「CWNP Certified Wireless Analysis Professional」

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