单项选择题
A.FTP B.SFTP C.SMTP D.TFTP
Which of the following is used to serve as an emergency...
单项选择题Which of the following is used to serve as an emergency backup line to troubleshoot a broadbandconnection on many routers?（）
A.DSL B.POTS C.VDSL D.Smart jack
An administrator wants to test the network MTU. Which o...
单项选择题An administrator wants to test the network MTU. Which of the following commands allows differentsize packets to be sent?（）
A.netstat B.traceroute C.nbtstat D.ping
An administrator suspects that an incorrect POTS line i...
单项选择题An administrator suspects that an incorrect POTS line is carrying the DSL signal. Which of thefollowing will help diagnose this issue?（）
A. Multimeter B. Toner probe C. Protocol analyzer D. Butt set
