Which of the following specifies the maximum non-overlapping channels that can be deployed in the 2.4 GHz ISM band?
  1. 3
  2. 12
  3. 11
  4. 5
Explanation
Answer - A - The maximum non-overlapping channels that can be deployed in the 2.4 GHz ISM band is 3.

Key Takeaway: The 802.11b and 802.11g amendments require 25 MHz of separation between the center frequencies of HR-DSSS channels to be considered non-overlapping. The 802.11g amendment also requires 20 MHz of separation between the center frequencies of ERP-OFDM channels. Only three channels: 1, 6, and 11 meet these requirements.
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