超星 - IOS管理 - 查题吧

多选题

You are unsuccessful in telnetting into a remote device.you are telled[Connection to 12.1.1.1 closed by foreign host]What could the problem be? (Choose two.)

A. IP addresses are incorrect.
B. Access control list is filtering Telnet.
C. There is a defective serial cable.
D. The VTY password is missing.

单选题

When you are logged into a router, which prompt indicates that you are in privileged mode?

A. %
B. @
C. >
D. $
E.

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