Practice Quiz

CWNA Wireless Network Administrator

Category - CWNA

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Which of the following devices is not a potential source of interference for devices operating in any band?
  1. Bluetooth
  2. 2.4 GHz DSSS cordless phone
  3. 802.11 FHSS access point
  4. HomeRF access point
Explanation
Answer - B - The 2.4 GHz DSSS cordless phone is not a potential source of interference for devices operating in any band.

Key Takeaway: The major source for interference for devices operating in any band is FHSS. FHSS is used by Bluetooth, 802.11 FHSS access points, and Home RF equipment. The 2.4 GHz cordless phone operates in the 2.4 GHz ISM band and interferes with devices in the 2.4 GHz band only.
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