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300-360 · Question #47

An engineer is performing a predictive wireless design for a carpeted office space, which requires voice capability and location services. Which two requirements are inputs to the design? (Choose…

The correct answer is B. overlapping -75 dBm coverage from three access points D. continuous -67 dBm coverage from one access point. For a voice network the APs are grouped closer together and have more overlap than a data-only installation because voice clients need to roam to a better AP before dropping packets. Generally, you should create smaller cells than for data-only networks and ensure the…

WLAN Design

Question

An engineer is performing a predictive wireless design for a carpeted office space, which requires voice capability and location services. Which two requirements are inputs to the design? (Choose two.)

Options

  • Aoverlapping -67 dBm coverage from three access points
  • Boverlapping -75 dBm coverage from three access points
  • Coverlapping-72 dBm coverage from two access points
  • Dcontinuous -67 dBm coverage from one access point
  • Econtinuous -72 dBm coverage from one access point

How the community answered

(28 responses)
  • A
    7% (2)
  • B
    75% (21)
  • C
    14% (4)
  • E
    4% (1)

Explanation

For a voice network the APs are grouped closer together and have more overlap than a data-only installation because voice clients need to roam to a better AP before dropping packets. Generally, you should create smaller cells than for data-only networks and ensure the overlapping cell edges are at or above -67 dBm. For mobile devices to be tracked properly, a minimum of three access points (with four or more preferred for better accuracy and precision) should be detecting and reporting the received signal strength (RSSI) of any client station, asset tag, or rogue device being tracked. It is preferred that this detected signal strength level be -75dBm or better. N.html#pgfId-1000250

Topics

#predictive design#voice coverage#location services#signal requirements

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