Which option lists the non-overlapping channels in the ETSI domain?

The correct answer is A. 1, 6, and 11. In the 2.4 GHz band, 802.11 channels are each 22 MHz wide and spaced 5 MHz apart, so two channels must be at least 5 channels apart (25 MHz) to be non-overlapping. Channels 1, 6, and 11 (A) satisfy this requirement and are the universally recognized set of three non-overlapping…

WLAN Design

Question

Options

A1, 6, and 11
B1, 5, 9, and 13
C1, 5, 9, 13, and 14
D1, 5, and 9
E1, 6, 11, and 14

How the community answered

(26 responses)

A
92% (24)
C
4% (1)
E
4% (1)

Explanation

In the 2.4 GHz band, 802.11 channels are each 22 MHz wide and spaced 5 MHz apart, so two channels must be at least 5 channels apart (25 MHz) to be non-overlapping. Channels 1, 6, and 11 (A) satisfy this requirement and are the universally recognized set of three non-overlapping channels. While the ETSI regulatory domain allows channels 1–13 (versus the FCC's 1–11), the standard non-overlapping channel set recognized in ETSI for practical Wi-Fi deployments remains 1, 6, and 11. Although 1, 5, 9, 13 can also be non-overlapping in ETSI environments, the exam recognizes 1, 6, 11 as the correct answer, consistent with Cisco's CCNA Wireless curriculum for this domain.

Topics

#ETSI domain#non-overlapping channels#2.4GHz#channel planning

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