Implementing Cisco Enterprise Wireless Networks (ENWLSI) — Question 120

An engineer is planning an image upgrade of the WLC, and hundreds of APs are spread across remote sites with limited WAN bandwidth. The engineer must minimize the WAN utilization for this upgrade. Which approach must be used for the AP image upgrade?

Answer options

• A. Predownload the new code to the APs.
• B. Use the Smart AP image upgrade feature.
• C. Allow the APs to download their code after WLC reboot.
• D. Execute parallel TFTP code upgrade on the APs via SSH.

Correct answer: B

Explanation

The correct answer is B because the Smart AP image upgrade feature is specifically designed to optimize the bandwidth usage during upgrades by coordinating the downloads efficiently. Option A, while helpful, does not directly minimize WAN usage like option B. Option C allows for less control over bandwidth usage as APs download code after a reboot, and option D would increase WAN utilization by performing upgrades in parallel without any optimization.