HPE Aruba Certified Mobility Associate (ACMA) — Question 37

An architect plans 12 APs for an auditorium that is 325 square meters (3, 498 square feet). Each AP has one 2.4 GHz radio and one 5 GHz radio. Both types of radios use 20 MHz channels.
Assume that DFS channels can be used in this design. How many 5 GHz collision domains does this design provide?

Answer options

• A. 1
• B. 6
• C. 12
• D. 25

Correct answer: B

Explanation

The correct answer is 6, as the 5 GHz band can accommodate more channels due to its higher frequency and the use of DFS channels. Each collision domain is defined by the number of non-overlapping channels available, and with the configuration provided, 6 distinct collision domains can be achieved. The other options either underestimate or overestimate the number of collision domains based on the radio channel allocations.