单项选择题
A.Echo is the discernable leak-through of your own Rx path into your own Tx path.
B.Echo is the discernable leak-through of the packets of your Rx path into your own Tx path.
C.Echo is the nonaudible leak-through of the packets of your Rx path into your own Tx path.
D.Echo is the audible leak-through of the packets from the transmit path into your own receive path.
E.Echo is the nonaudible leak-through of the packets of your Tx path into your own Rx path.
单项选择题 Refer to the exhibit. The Hamilton Hair Emporium was having difficulty hearing during conference calls. This configuration adjustment was made, and now the company is experiencing sound distortion. What is the cause?（）
单项选择题 Refer to the exhibit. Where would a Cisco Unity Express Network Module physically reside? （）
多项选择题 heClintonHoweWeightsandMeasuresCompanywantstosendCDRstoasyslogserver.Whichtwooptionsarerequired?（）