H12-323_V2.0 · Question #537
A company's WLAN network has multiple APs working in the 2.4G frequency band. Since there are relatively few available channels in the 2.46 frequency band, the recommended bandwidth is 20 MHz .
The correct answer is A. True. Option A is correct because the 2.4 GHz band supports only three non-overlapping 20 MHz channels (channels 1, 6, and 11 in most regions), making channel reuse a critical concern when deploying multiple APs. Using 20 MHz bandwidth preserves all three non-overlapping slots…
Question
A company's WLAN network has multiple APs working in the 2.4G frequency band. Since there are relatively few available channels in the 2.46 frequency band, the recommended bandwidth is 20 MHz .
Options
- ATrue
- BFalse
How the community answered
(58 responses)- A74% (43)
- B26% (15)
Explanation
Option A is correct because the 2.4 GHz band supports only three non-overlapping 20 MHz channels (channels 1, 6, and 11 in most regions), making channel reuse a critical concern when deploying multiple APs. Using 20 MHz bandwidth preserves all three non-overlapping slots, allowing adjacent APs to operate on different channels without co-channel interference. Option B (False) is wrong because widening channels to 40 MHz in the 2.4 GHz band would effectively leave only one or zero non-overlapping channels, dramatically worsening interference in a multi-AP environment. The 5 GHz band - not 2.4 GHz - is where 40 MHz or 80 MHz channels are commonly recommended, since it offers many more non-overlapping channels.
Memory tip: Think "2.4 GHz = 3 channels, stay thin (20 MHz)." The fewer the channels, the narrower your bandwidth should be to share them fairly.
Topics
Community Discussion
No community discussion yet for this question.