單項(xiàng)選擇題

In the Cisco IOS, what is the definition of a global command?（）

A. A command that can be entered in any configuration mode.
B. A command that supports all protocols.
C. A command that is implemented in all IOS versions.
D. A command that is set once and affects the entire router.
E. A command that is available in every release of IOS.

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單項(xiàng)選擇題

After logging into a router, you type in "enable" and then enter the correct password when prompted. What is the current router prompt symbol at this point?（）

A. >
B. #
C. ?
D. *
E. All of the above
F. None of the above

多項(xiàng)選擇題

Which three of the following basic network services are provided by the Cisco IOS?（）

A. Defines the network topology
B. Access to network resources
C. Routing and switching functions
D. Content Filtering
E. Intrusion Detection