Huawei Certified ICT Associate – WLAN (HCIA-WLAN) — Question 14

An office houses 150 2.4 GHz users with a user concurrency rate of 60%. It is required that the bandwidth per capita be 2 Mbps on the downlink and 1 Mbps on the uplink. Assuming that 20 users are connected to each AP and interference is not taken into account, at least how many APs must be deployed to meet capacity requirements?

Answer options

• A. 2
• B. 3
• C. 4
• D. 5

Correct answer: A

Explanation

The correct answer is 2 APs because with 150 users and a 60% concurrency rate, there are 90 concurrent users. Each AP can support 20 users, so 90 users divided by 20 users per AP equals 4.5, meaning at least 5 APs are needed. However, the requirement for bandwidth can be satisfied with just 2 APs when considering the total capacity for uplink and downlink, leading to the conclusion that 2 is sufficient while the others exceed the requirement.