Which of the following is the MOST likely reason for this issue?

While implementing a non-carrier-grade wireless backhaul, a technician notices the current channel selection is externally 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?
A . The channel is reserved for licensed band use.
B. The channel selection is defective, contact the manufacturer.
C. The channel must be unblocked by the vendor.
D. The device requires a firmware update to unlock the channel.

View Answer

Answer: A

Explanation:

The 2. band is subdivided into up to 14 channels, spaced at 5 MHz intervals from 2412 MHz up to 2484 MHz. Wi-Fi requires bandwidth of approximately 20 MHz, not 5 MHz. Consequently, a site designer needs to choose the channels that do not overlap. On a WLAN where only the first 11 channels are available, channels 1, 6, and 11 can be selected as non-overlapping. Note: In the Americas, regulations permit the use of channels 1-11 only, while in Europe, channels 1-13 are permitted. In Japan, all 14 channels are permitted.