CWNP PW0-105 Online Practice Questions and Exam Preparation

CWNP PW0-105 Online Questions & Answers

• Question 71:

  Given: As defined in the 802.11 specification, legacy Power Save requires an inefficient back-and-forth frame exchange process. Due to this inefficiency, many WLAN device implementations use a variation of 802.11 Power Save to accomplish the same function.

  What non-standard power save behavior is used by most Wi-Fi devices in actual implementations?

  A. Client devices ignore the TIM field and automatically send PS-Poll frames after every beacon.
  B. After each beacon, the AP attempts to empty its frame buffer by sending Wake-on-WLAN frames to wake each dozing client.
  C. Request-to-Send and Clear-to-Send frame exchanges are used to trigger the delivery of buffered data.
  D. The Beacon interval is changed from the default 100 time units to 10 or less time units.
  E. Clients send null data frames to the AP and switch the power management bit from 1 to 0 to receive queued data.
  F. Stations send a CTS-to-self frame to the AP with a very long duration period so they can receive all of their buffered data at once.
  E. Clients send null data frames to the AP and switch the power management bit from 1 to 0 to receive queued data.

• Question 72:

  What term correctly completes the following sentence?

  802.11a/b/g used a mandatory 800ns guard interval. 802.11n introduces an optional short 400ns guard interval. Guard intervals (GI) are necessary in OFDM to reduce the likelihood of interference between two consecutive ____________.

  A. Frames
  B. Packets
  C. Segments
  D. Bits
  E. Bytes
  F. Symbols
  F. Symbols

• Question 73:

  What factor is NOT taken into account when calculating the Link Budget of a point-to-point outdoor WLAN bridge link?

  A. Operating frequency
  B. Transmit antenna gain
  C. Transmit power
  D. Antenna height
  E. Receive sensitivity
  F. Distance
  D. Antenna height

• Question 74:

  In WLAN security, which authentication methods always create Layer 2 dynamic encryption keys? (Choose two)

  A. HTTPS Captive Portal
  B. WEP
  C. WPA2-PSK
  D. EAP-TLS
  E. Shared Key
  F. TKIP
  C. WPA2-PSK
  D. EAP-TLS

• Question 75:

  Given: XYZ Company has decided to install an 802.11 WLAN system that will support 1000 wireless users, but they are concerned about network security. XYZ is interested in deploying standardized security features. In addition to WPA2Enterprise with PEAP and role-based access control, XYZ would like to support management frame protection as well as a fast secure roaming protocol for future mobile handsets.

  As XYZ Company selects a product to deploy, what two IEEE amendments should be supported to provide the management frame protection and fast secure roaming security features? (Choose two)

  A. 802.11j
  B. 802.11p
  C. 802.11r
  D. 802.11u
  E. 802.11w
  F. 802.11z
  C. 802.11r
  E. 802.11w

• Question 76:

  What statements about the beamwidth of an RF antenna are true? (Choose two)

  A. The lower the gain of an antenna, the more narrow one or both beamwidths become.
  B. The beamwidth patterns on an antenna polar chart indicate the point at which the RF signal stops propagating.
  C. Horizontal and vertical beamwidth are calculated at the points in which the main lobe decreases power by 3 dB.
  D. Horizontal beamwidth is displayed (in degrees) on the antenna's Azimuth Chart.
  E. Antenna beamwidth is measured in units of decibels relative to an isotropic radiator (dBi).
  C. Horizontal and vertical beamwidth are calculated at the points in which the main lobe decreases power by 3 dB.
  D. Horizontal beamwidth is displayed (in degrees) on the antenna's Azimuth Chart.

• Question 77:

  What statements describe industry practices for communication protocols between WLAN controllers and controller-based APs? (Choose two)

  A. All vendors use the same protocol so that APs will interoperate with WLAN controllers from other vendors.
  B. Some vendors use proprietary protocols, and some vendors use protocols based on public standards like RFCs.
  C. For most vendors, the controller-based APs maintain data and control tunnels with at least two controllers for immediate failover and redundancy.
  D. All vendors support at least one L2 or L3 broadcast protocol for controller discovery by controller- based APs.
  E. All vendors recommend using L2 (instead of L3) controller discovery and tunneling protocols in large enterprises.
  B. Some vendors use proprietary protocols, and some vendors use protocols based on public standards like RFCs.
  D. All vendors support at least one L2 or L3 broadcast protocol for controller discovery by controller- based APs.

• Question 78:

  Given: You are on-site to perform a post-deployment site survey. When verifying a multiple channel VoWiFi deployment using a VoWiFi handset, which aspect is most important?

  A. Performing protocol analysis with a single wireless adapter that is scanning all channels in use
  B. Testing a constant conversation or handset tone while roaming from area to area, or performing an active survey
  C. Configuring DSCP-to-802.11e QoS maps on the handset for each access category.
  D. Verifying the orientation/polarity of all omni-directional antennas in use by the VoWiFi clients.
  B. Testing a constant conversation or handset tone while roaming from area to area, or performing an active survey

• Question 79:

  Which IEEE 802.11 physical layer (PHY) specifications include support for and compatibility of both OFDM and HR/DSSS? (Choose 2)

  A. HR/DSSS (802.11b)
  B. OFDM (802.11a)
  C. ERP (802.11g)
  D. HT (802.11n)
  E. CCK (802.11b)
  F. PBCC (802.11g)
  C. ERP (802.11g)
  D. HT (802.11n)

• Question 80:

  ABC Company is planning a point-to-multipoint outdoor bridge deployment with standalone (autonomous) 802.11 bridge units. 802.1X/EAP will be used for bridge authentication. What device in the bridge implementation acts as the 802.1X Authenticator?

  A. The RADIUS server
  B. All non-root bridges
  C. A designated non-root bridge
  D. The root bridge
  E. The Ethernet switch
  D. The root bridge