A network administrator is troubleshooting severe wireless performance degradation and intermittent disconnections in a dense office environment operating on the band. An RF spectrum analyzer reveals that adjacent access points are broadcasting on channels , , and . Which of the following channel reconfigurations should the administrator implement to eliminate co-channel and adjacent-channel interference?
- Reconfigure the access points to broadcast exclusively on channels 1, 6, and 11.Answer
- BReconfigure the access points to broadcast on adjacent even-numbered channels 2, 4, and 6.
- CUpdate the wireless access point configuration to dynamically assign IP addresses via DNS scope settings.
- DReplace the wireless access points with Layer 2 unmanaged switches to divide the wireless collision domains.
Answer
Reconfigure the access points to broadcast exclusively on channels 1, 6, and 11.
In 2.4 GHz wireless networks, each channel spans 20 to 22 MHz of frequency space, while channel centers are only 5 MHz apart. To avoid adjacent-channel interference between neighboring access points, administrators must select non-overlapping channels. The standard non-overlapping channel set for 2.4 GHz Wi-Fi is 1, 6, and 11.
Step-by-Step Solution
Key Concept
2.4 GHz Wi-Fi Channel Overlap and Non-Overlapping Channel Selection
Estimated Time:1m 30s