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CWNP CWAP-402 Exam Practice Questions (P. 5)

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Question #21
You work as an SE for a value-added reseller. A client has an existing deployment of 802.11n Aps and wants to upgrade several BSSs to 802.11ac.
What hardware feature of some enterprise Aps may allow for this without a forklift upgrade?
  1. A
    Adding an 802.11ac module to the existing APs
  2. B
    Simply check the Enable 802.11ac checkbox in the web-based configuration interface
  3. C
    Replace the antennas with 802.11ac antennas
  4. D
    Converting the 802.11n radio to an 802.11ac radio through software

Correct Answer:
B

Question #22
You are troubleshooting throughput problems for a WLAN cell. The cell is provisioned with an 802.11ac dual-band AP. Users connected with both 5 GHz and 2.4
GHz connections are reporting performance problems. The AP settings are properly optimized. No interface issues have been detected (either co-channel interference or non-Wi-Fi interference) and the number of associated users is low.
What should you analyze to resolve the issue?
  1. A
    The 2.4 GHz radio configuration
  2. B
    The antennas used on the client devices
  3. C
    the Ethernet uplink and the network infrastructure
  4. D
    The 5 GHz radio configuration

Correct Answer:
C

Question #23
When using Wireshark for protocol analysis, what filter will allow you to see only beacon frames?
  1. A
    wlan.fc.type_subtype = =0x05
  2. B
    wlan.fc.type_subtype = =0x0b
  3. C
    wlan.fc.type_subtype = =0x08
  4. D
    wlan.fc.type_subtype = =0x04

Correct Answer:
C
Reference:
http://www.lovemytool.com/blog/2010/02/wireshark-wireless-display-and-capture-filters-samples-by-joke-snelders.html

Question #24
You have captured 802.11 traffic using an adapter that includes the radio tap header. You see several frames often called announcement frames in the capture.
What best describes these types of frames?
  1. A
    They only include beacon and probe request frames
  2. B
    They are used to allow a STA to awake from sleep and for no other reason
  3. C
    They only include beacon and probe response frames
  4. D
    They are meant to provide information to the network that may result in state changes, but they are not open for rejection

Correct Answer:
C

Question #25
What is the formula used to calculate the Duration field value in an RTS frame?
  1. A
    RTS Duration field = CTS duration
  2. B
    RTS Duration field = Data or management to be sent frame duration
  3. C
    RTS Duration field = Data or management frame to be sent duration + CTS duration + one ACK duration + three SIFS
  4. D
    RTS Duration field = Data or management frame to be sent duration + CTS duration

Correct Answer:
C

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