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 anaIysis, 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?
发布于 2021-03-18 18:36:18
【单选题】 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.
