Suppose you search for an AP on a WLC and notice that Noise is −20 on the 2.4 GHz band. Which of the following statements is correct?

Suppose you search for an AP on a WLC and notice that Noise is −20 on the 2.4 GHz band. Which of the following statements is correct?

• The noise is at a very low level, which is good for wireless performance.
• The noise is at a very high level, which is good for wireless performance.
• The noise is at a very low level, which is bad for wireless performance.
• The noise is at a very high level, which is bad for wireless performance.

Explanation: The noise level is measured in dBm, from 0 dBm to −100 dBm or more. For the best wireless performance, you want the noise level to be as minimal as possible, so −100 would be best. Because the actual level is −20, performance is probably very bad around the AP.

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