CWNP PW0-105 Online Practice Questions and Exam Preparation

CWNP PW0-105 Online Questions & Answers

• Question 31:

  What mechanisms are specified by the IEEE 802.11 standard to attempt to prevent multiple radios from transmitting on the RF medium at a given point in time? (Choose three)

  A. Random backoff timer
  B. Clear channel assessment
  C. Network allocation vector
  D. Slot assessment value
  E. Collision detection
  F. Duty cycle detection
  A. Random backoff timer
  B. Clear channel assessment
  C. Network allocation vector

• Question 32:

  What factors are likely to cause the greatest impact on the application layer throughput of an 802.11n client station in a 2.4 GHz HT BSS? (Choose three)

  A. Use of WEP or TKIP for encryption instead of CCMP
  B. Use of passphrase authentication instead of 802.1X/EAP authentication
  C. Increasing the beacon interval from 100 to 200 (TUs)
  D. RF interference from more than 10 nearby Bluetooth transmitters
  E. Increasing or decreasing the number of spatial streams in use by the client station and AP
  F. Configuring the AP to perform off-channel IDS scans for rogue devices for 50 ms out of every 20 seconds
  A. Use of WEP or TKIP for encryption instead of CCMP
  D. RF interference from more than 10 nearby Bluetooth transmitters
  E. Increasing or decreasing the number of spatial streams in use by the client station and AP

• Question 33:

  When planning an access point deployment that utilizes Power over Ethernet (PoE) switches at the network edge, what design decision could adversely affect the operation of 802.3af APs?

  A. All ports on the Ethernet switch will be supporting Class 3 PoE powered devices.
  B. Some APs are connected to a PoE switch and are also receiving power from an AC outlet.
  C. The Ethernet switch's uplink ports are not connected to an 802.3af-compliant core or distribution Ethernet switch.
  D. A gigabit Ethernet switch port supporting an 802.11a/g AP auto-negotiates to 100 Mbps.
  E. The installation team is not informed that PoE support will reduce the recommended maximum UTP cabling length from 100m to 50m.
  A. All ports on the Ethernet switch will be supporting Class 3 PoE powered devices.

• Question 34:

  Which antenna types are commonly used by indoor Wi-Fi devices in a MIMO diversity implementation? (Choose two)

  A. Dipole
  B. Patch
  C. Dish
  D. Grid
  E. Sector
  A. Dipole
  B. Patch

• Question 35:

  What causes of hidden nodes within a BSS would likely lead to an increase in collisions and retries? (Choose two)

  A. Data frames too large for the physical environment
  B. Client stations broadcasting with too much power
  C. Access points broadcasting with too little power
  D. Client stations too close in proximity to each other
  E. Obstacles between client stations causing attenuation
  F. Large 802.11 cells with physically distributed stations
  E. Obstacles between client stations causing attenuation
  F. Large 802.11 cells with physically distributed stations

• Question 36:

  In an 802.11b/g system, what channels are considered non-overlapping? (Choose two)

  A. Channels 5 and 10
  B. Channels 1 and 5
  C. Channels 3 and 7
  D. Channels 2 and 8
  E. Channels 8 and 11
  F. Channels 10 and 13
  A. Channels 5 and 10
  D. Channels 2 and 8

• Question 37:

  What is required to establish a high quality 2.4 GHz RF link at a distance of 3 miles (5 kilometers)?

  A. Minimum output power level of 1 W
  B. Accurate Earth Bulge calculations
  C. Directional antennas at each endpoint
  D. A minimum antenna gain of 13 dBi at both endpoints
  E. A Fresnel Zone that is at least 60% clear of obstructions
  E. A Fresnel Zone that is at least 60% clear of obstructions

• Question 38:

  Which answer correctly completes the following sentence? The WMM certification, created by the Wi-Fi Alliance, is based on the ___________ coordination function with support for ___________ QoS priority.

  A. Hybrid, contention-based
  B. Point, scheduled
  C. Dynamic, distributed
  D. Distributed, trigger-and-delivery
  E. Enhanced, contention-free
  A. Hybrid, contention-based

• Question 39:

  What is the approximate beamwidth of the antenna displayed in the exhibit?

  

  A. 15 degrees
  B. 30 degrees
  C. 50 degrees
  D. 70 degrees
  E. 120 degrees
  B. 30 degrees

• Question 40:

  Prior to association, what parameter can 802.11 client devices measure and use to select the optimal access point for association?

  A. Signal strength of access point beacons
  B. Proximity to potential access points
  C. Retry rate of probe request and response frames
  D. Average round trip time to reach the IP gateway
  E. Number of nearby RF interference sources
  A. Signal strength of access point beacons