A network administrator is setting up a new wireless network in an enterprise environment. The network uses multiple access points (APs) to cover a large office area. After deployment, users report intermittent connectivity issues and degraded performance. While investigating, the administrator noticed that all APs are operating on the default channels and are positioned closely together, which causes channel overlap leading to co-channel interference. Which of the following actions should the administrator take to resolve this problem?
Select non-overlapping channels for adjacent APs.
Configure all APs to use the same channel to ensure uniform coverage.
Increase the transmission power on all APs to overcome the interference.
Decrease the APs' transmission power so that they only cover very small areas.