CompTIA A+ Core 1 (220-1101) — Question 483

While implementing a non-carrier-grade wireless backhaul, a technician notices the current channel selection is extremely polluted with various RF signals. Upon performing a spectral analysis, the technician discovers a channel containing almost no RF pollution. Unfortunately, the technician is unable to select that channel.
Which of the following is the MOST likely reason for this issue?

Answer options

• A. The channel is reserved for licensed band use.
• B. The channel selection is defective; contact the manufacturer.
• C. The channel must be unlocked by the vendor.
• D. The device requires a firmware update to unlock the channel.

Correct answer: A

Explanation

The correct answer is A because the channel may be allocated for licensed usage, preventing the technician from selecting it. Options B and C are less likely because they suggest a malfunction or a need for vendor intervention rather than a regulatory restriction. Option D implies a technical issue that could be solved with an update, but does not address the licensing aspect.