Which of the following implementation methods does CAC have? (Multiple choice)

Question

Options

• ABased on channel utilization
• BBased on the number of users
• CBased on terminal SNR
• DBased on AP number

• A
  73% (29)
• D
  28% (11)

Explanation

CAC (Call Admission Control) in wireless networks uses measurable radio and load parameters to decide whether to admit new connections. Channel utilization (A) controls admission by monitoring how much of the wireless medium is already occupied, rejecting new requests when a threshold is exceeded. User count (B) enforces a hard cap on concurrent connections per AP, while terminal SNR (C) gates admission based on the signal quality of the requesting device - ensuring weak-signal clients don't degrade overall network performance. Option D is incorrect because the number of APs is an infrastructure planning metric, not a per-connection admission criterion; CAC decisions are made from the perspective of a single AP evaluating whether to accept a new client or call.

Memory tip: Think of CAC as asking three questions before letting someone in - "Is the airwaves too busy?" (channel utilization), "Is the room full?" (user count), and "Can you even hear me clearly?" (SNR). AP count is a deployment concern, not an admission gatekeeper.

No community discussion yet for this question.