When designing a WLAN, AP placement is important. How would you rank the density of APs needed to support location services versus data and voice services?

Question

Options

• AVoice and data services both require a higher density of APs than location services.
• BData services have a lower density of APs compared to location services, but more than
• CVoice services have the highest density of APs over location and data services.
• DData services have the lowest density of APs compared to location services, which has the

• A
  3% (1)
• C
  6% (2)
• D
  91% (32)

Explanation

AP density requirements from highest to lowest are: Location Services > Voice > Data. Location services require the highest AP density because they rely on multiple APs simultaneously hearing a client to perform RF triangulation or trilateration - typically requiring at least 3 APs with strong enough signal to locate a device accurately. Voice services require a higher density than data because voice is sensitive to coverage gaps, latency, and jitter - Cisco recommends a minimum of -67 dBm at the cell edge for voice. Data services require the lowest density since occasional coverage gaps or lower signal levels are tolerable with basic data applications. Answer D correctly states data has the lowest density and location services has the highest.

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