单项选择题

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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单项选择题

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

多项选择题

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

单项选择题

Which of the commands below would you enter if you wanted to see the configuration register of your router?（）

A. show boot
B. show flash
C. show register
D. show version
E. show config