H12-311_V3.0 · Question #194
The number of users is 300, the concurrency rate is 70%, and the terminal supports 2.4GHz and 5GHz frequency bands. According to the maximum number of dual-band access users per AP is 40, at least…
The correct answer is B. 6. Option B (6 APs) is correct because the concurrency rate of 70% means only 300 × 0.70 = 210 users are simultaneously active. Dividing by the AP capacity: 210 ÷ 40 = 5.25, which must be rounded up to 6 since partial APs don't exist. Why the distractors fail: A (5): Tempting…
Question
The number of users is 300, the concurrency rate is 70%, and the terminal supports 2.4GHz and 5GHz frequency bands. According to the maximum number of dual-band access users per AP is 40, at least how many APs are required to meet the capacity requirements?
Options
- A5
- B6
- C7
- D8
How the community answered
(20 responses)- A5% (1)
- B80% (16)
- C10% (2)
- D5% (1)
Explanation
Option B (6 APs) is correct because the concurrency rate of 70% means only 300 × 0.70 = 210 users are simultaneously active. Dividing by the AP capacity: 210 ÷ 40 = 5.25, which must be rounded up to 6 since partial APs don't exist.
Why the distractors fail:
- A (5): Tempting because 5.25 rounds down to 5 in normal math, but 5 APs only support 5 × 40 = 200 concurrent users - falling short of the 210 required.
- C (7) and D (8): Both technically provide enough capacity but violate the "at least" (minimum) constraint - the question asks for the smallest number that meets the requirement, not a comfortable excess.
Memory tip: For AP capacity problems, use the formula ⌈(Users × Concurrency Rate) ÷ AP Capacity⌉ - always ceiling divide (round up), never round down, because under-provisioning leaves users without coverage.
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