Free CWNP PW0-250 Exam Dumps Questions & Answers

When preparing a floor plan graphic for use in predictive and manual site surveying, what calibration method will lead to the most accurate and reliable RF data?

• A.  Measure the width of an actual office doorway with a tape measure and use this value to calibrate against a doorway graphic.
• B.  Use the longest available measurement (like a straight exterior wall) to calibrate the graphic's scale.
• C.  With properly formatted .bmp and .png graphics, the site survey software should be able to extract the scale directly from the graphic data during import.
• D.  Use the known size of a small object, such as a ceiling tile, and use a single instance of this object (e.g. a single ceiling tile) to scale the floor plan.
• E.  Calibrate the ceiling height of the floor plan first, then the survey software should be able to auto-calibrate the X and Y planes of the graphic.

Given: Assume that music on hold (MOH) features are unicast only.
What VoWiFi implementations require multicast packet delivery support by the WLAN infrastructure?

• A.  VoWiFi soft phones
• B.  All VoWiFi implementations
• C.  Push-to-Talk VoWiFi phones
• D.  Flat (non-VLAN) VoWiFi implementations
• E.  FMC phones

You told your customer that multipath fading may be mitigated simply by moving one or both of the receiver's antennas a little bit, usually by one to four wavelengths away from its original position. Your customer is prepared to make the change, but does not know the wavelength for 802.11a.
What is the approximate wavelength of an 802.11a radio wave?

• A.  12 cm (4.72 inches)
• B.  5.5 cm (2.16 inches)
• C.  45 cm (17.71 inches)
• D.  58 cm (22.83 inches)
• E.  15.24 cm (6 inches)

Assuming an identical RF environment,

which one of these scenarios is most likely to lead to a client-to-AP link imbalance in which one-way communication results?

• A.  Option A
• B.  Option D
• C.  Option B
• D.  Option C

Given: The 802.11n APs you have selected for your public access deployment support many of the PHY and MAC enhancements offered by the 802.11n standard. The AP is single-band (2.4 GHz) and only allows 20 MHz channels. The WLAN radio in the AP is a 3x3 802.11n chip that supports two spatial streams.
What is the maximum MCS rate that could be supported by this AP?

• A.  54 Mbps
• B.  300 Mbps
• C.  65 Mbps
• D.  144 Mbps
• E.  150 Mbps
• F.  108 Mbps