HPE Aruba Certified Mobility Associate (ACMA) — Question 57

An enterprise needs an upgrade to 802.11ac. Users run applications such as Web, email, voice, and video. The architect needs to conduct an active site survey to plan 802.11ac AP locations. The noise floor is about -90 dBm across the site.
Based on Aruba best practices, what is the minimum acceptable signal that the architect should look for to determine the test AP range?

Answer options

• A. a signal of -65 dBm in the 2.4 GHz band
• B. a signal of -75 dBm in the 5 GHz band
• C. a signal of -65 dBm in the 5 GHz band
• D. a signal of -75 dBm in the 2.4 GHz band

Correct answer: C

Explanation

The minimum acceptable signal strength for reliable performance in the 5 GHz band is -65 dBm, which aligns with Aruba's best practices for ensuring adequate coverage and capacity for applications like video and voice. The other options either propose lower signal strengths or refer to the 2.4 GHz band, which is less optimal for high-density environments and does not meet the requirements for 802.11ac.