問題文
Two numbers are needed from the spectrum analyzer: how much of the time any energy at all is present on the channel, and the level that the channel settles to when nothing is transmitting. Which pairing names those two?
選択肢
- How much of the time energy is present comes from the occupancy reading, while the level that quiet periods settle to comes from the ambient level that the interpretation of signal quality rests upon.
- How much of the time energy is present comes from the sideband reading, while the level that quiet periods settle to comes from the ambient level that the interpretation of signal quality rests upon.
- How much of the time energy is present comes from the occupancy reading, while the level that quiet periods settle to comes from the peak level that the interpretation of signal quality rests upon.
- How much of the time energy is present comes from the sideband reading, while the level that quiet periods settle to comes from the peak level that the interpretation of signal quality rests upon.