Designing Cisco Enterprise Wireless Networks (ENWLSD) — Question 227

A customer has multiple WGBs located around a warehouse to support mobile and stationary industrial machines. The wireless network consists of these components:

• two Cisco 5520 WLCs in a high availability cluster
• 100 Cisco 2800 APs in local mode
• 25 Cisco IW3700 Series APs in WGB mode
• WLANs that are all 802.11a only
• UNII 1, UNII 2, and UNII 2E channels in use

The customer wants to use only UNII 2 channels within the mobile machine area of the warehouse and must reduce the channel scan time on the WGBs. Which channels must be incorporated in the design for the WGBs?

Answer options

• A. 36, 40, 44, 48
• B. 52, 56, 60, 64
• C. 100, 104, 108, 112
• D. 149, 153, 157, 161

Correct answer: B

Explanation

The correct answer is B, as UNII 2 channels (52, 56, 60, 64) are specifically designated for indoor use and align with the customer's requirement to operate within the mobile machine area. Options A, C, and D do not meet the criteria since they either fall outside the UNII 2 range or are not suitable for the specified WLAN configuration.