Which test checks the transmitter and receiver of a local modem?()
- A、data parity
- B、analog loop back
- C、local digital loop back
- D、remote digital loop back
正确答案:B
答案解析:有

微信扫一扫手机做题
Which test checks the transmitter and receiver of a local modem?()
微信扫一扫手机做题