CWNP PW0-105 Online Practice Questions and Exam Preparation

CWNP PW0-105 Online Questions & Answers

• Question 41:

  Given: Two co-located 802.11b/g/n APs can interfere with one another and cause contention and collisions, even when the two APs are operating on non-overlapping channels (e.g. 1 and 6).

  What deployment flaw could cause this problem? (Choose two)

  A. The access points are mounted too closely to one another.
  B. Reflective objects in the area are causing significant multipath.
  C. A client station is using active scanning to probe for access points on multiple channels.
  D. The output power on the access points is too high.
  E. A client station authenticates to both access points, but does not associate.
  F. The access points are not synchronized to the same NTP server.
  A. The access points are mounted too closely to one another.
  D. The output power on the access points is too high.

• Question 42:

  What statement about 802.3af Power over Ethernet (802.3, Clause 33) is true?

  A. If a dual-radio access point requires 12W to operate, a PoE power source supplies 15.4W to the powered interface.
  B. 802.3af-compliant endpoint and midspan PSE devices support 10/100 as well as Gigabit (1000Base- T) data rates.
  C. Class 1 powered devices may use a maximum of 29W of power.
  D. 802.3af-compliant Ethernet switches must be able to simultaneously support class 3 powered devices on every powered interface.
  E. There are two classes of 802.3af PSEs: Type A supports up to 7W and Type B supports up to 15W of supplied power.
  A. If a dual-radio access point requires 12W to operate, a PoE power source supplies 15.4W to the powered interface.

• Question 43:

  What feature(s) are most likely to be supported by 802.11 enterprise-class WLAN controllers? (Choose 4)

  A. Link aggregation / port trunking
  B. 802.1p and DSCP QoS
  C. BGP and Frame Relay
  D. Captive web portals
  E. IGMP snooping
  A. Link aggregation / port trunking
  B. 802.1p and DSCP QoS
  D. Captive web portals
  E. IGMP snooping

• Question 44:

  What statement about the IEEE 802.11e QoS facility is true?

  A. 802.11 QoS is achieved by giving high priority queues a statistical advantage at winning contention.
  B. Four 802.1p user priorities are mapped to eight 802.11 transmit queues.
  C. When the Voice queue has frames awaiting transmission, no data will be transmitted from the Best Effort queue.
  D. To improve efficiency, Block Acknowledgments are required for Voice and Video WMM queues.
  E. 802.11 control frames are assigned to the 802.11 EF priority queue.
  A. 802.11 QoS is achieved by giving high priority queues a statistical advantage at winning contention.

• Question 45:

  What terms accurately complete the following sentence? The IEEE 802.11-2007 standard specifies mandatory support of the ___________ cipher suite for Robust Security Network Associations, and optional use of the ___________ cipher suite, which is designed for use with pre-RSNA hardware.

  A. CCMP, TKIP
  B. 802.1X/EAP, WEP
  C. TLS, SSL
  D. CCKM, WPA
  E. RC5, RC4
  A. CCMP, TKIP

• Question 46:

  Given: XYZ Corporation is experiencing connectivity problems with their existing building-to-building bridge link. A concrete wall on the roof of one building is partially blocking the Fresnel Zone, and the connection is dropping many frames. The administrator moves the antenna to an area not obstructed by the concrete wall and then realizes the RF cable cannot reach the new location.

  If an extension cable is added to move the antenna, what are the likely results?

  A. The data throughput rate will increase because VSWR will decrease.
  B. The Equivalent Isotropically Radiated Power (EIRP) will decrease.
  C. The antenna's azimuth beamwidth will decrease.
  D. The size of the Fresnel zone will increase.
  E. The likelihood of a direct lightning strike will increase.
  B. The Equivalent Isotropically Radiated Power (EIRP) will decrease.

• Question 47:

  In a long-distance RF link, what statement about Fade Margin is true?

  A. Fade Margin is an additional pad of signal strength designed into the RF system to compensate for unpredictable signal fading.
  B. The Fade Margin of a long-distance radio link should be equivalent to the receiver's antenna gain.
  C. A Fade Margin is unnecessary on a long-distance RF link if more than 80% of the first Fresnel zone is clear of obstructions.
  D. The Fade Margin is a measurement of signal loss through free space, and is a function of frequency and distance.
  A. Fade Margin is an additional pad of signal strength designed into the RF system to compensate for unpredictable signal fading.

• Question 48:

  Why is it recommended for a wireless network administrator to disable 1 Mbps and 2 Mbps data rates on the WLAN infrastructure? (Choose two) A. To improve capacity in the BSS

  B. To reduce the size of the AP's effective service area
  C. To prevent 802.11b devices from associating
  D. To maximize the range of the highest data rates
  E. To prevent VoWiFi multicast frames
  F. To enable support for long preambles
  B. To reduce the size of the AP's effective service area

• Question 49:

  The 802.11 protocol specifies a fundamental channel access method that is required for all stations and is used in all IBSS and BSS networks. What is this fundamental channel access method called?

  A. DCF
  B. PCF
  C. HCF
  D. EDCAF
  E. HCCA
  F. PCF/CA
  A. DCF

• Question 50:

  When a client moves to a new BSS within an ESS, what steps are part of the 802.11 reassociation process? (Choose two)

  A. The client station transmits a Reassociation Request frame to its current access point.
  B. The current access point informs the IP gateway of the reassociation.
  C. The current access point triggers the client's reassociation service.
  D. The new access point transmits a Reassociation Response to the client station with a status value.
  E. The client and new access point create unicast encryption keys.
  F. The client station transmits a deauthentication frame to the current access point.
  D. The new access point transmits a Reassociation Response to the client station with a status value.
  E. The client and new access point create unicast encryption keys.