As an experienced technician, you are responsible for Technical Support. A customer calls to ask the best signal level and noise level for cell phone. How to respond?()

A . -40dBm signal and -90dBm noise B . -50dBm signal and -90dBm noise C . -30dBm signal and -90dBm noise D . -20dBm signal and -90dBm noise

时间:2022-08-31 18:05:12 所属题库:CCDP(642-873)题库

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