2022计算机类考试思科认证冲刺密卷单选题答案(11.11)

1. [单选题]路由器当前的模式为“端口模式”，要退回到“特权模式”，应该使用的快捷键为（）

A. ctrl+b
B. ctrl+z
C. ctrl+c
D. ctrl+p

2. [单选题]A Ezonexam technician is troubleshooting connectivity problems between two routers that are directly connected through the serial line. The technician notices that the serial line is up but cannot see any neighbors displayed in the output of the show cdp neighbors command.In which OSI layer is the problem most likely occurring?

A. Physical
B. Data link
C. Network layer
D. Transport layer
E. Application layer

查看答案&解析查看所有试题

本文链接：https://www.51ksbd.net/show/40nonj.html