IOS 命令结构中的术语关键字和参数有什么区别？ What is the difference between the terms keyword and argument in the IOS command structure?
A. 输入的关键字具有预定义的长度。参数可以是任意长度。 A keyword is entered with a predefined length. An argument can be any length.
B. 关键字是特定的参数。参数不是预定义的变量。 A keyword is a specific parameter. An argument is not a predefined variable.
C. 完成命令需要关键字。参数不是。 A keyword is required to complete a command. An argument is not.
D. 关键字总是直接出现在命令之后。一个论点没有。 A keyword always appears directly after a command. An argument does not.
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哪个命令或组合键允许用户返回到命令层次结构中的上一级？ Which command or key combination allows a user to return to the previous level in the command hierarchy?
A. Ctrl-C Ctrl-C
B. 退出 exit
Ctrl-Z Ctrl-Z
D. 结束 end
发出 ping 命令后，管理员在交换机上使用 Ctrl-Shift-6 组合键。使用这些按键的目的是什么？ An administrator uses the Ctrl-Shift-6 key combination on a switch after issuing the ping command. What is the purpose of using these keystrokes?
A. 重新启动 ping 过程 to restart the ping process
B. 退出到不同的配置模式 to exit to a different configuration mode
C. 中断 ping 过程 to interrupt the ping process
D. 允许用户完成命令 to allow the user to complete the command
请参见图示。管理员正在尝试配置交换机，但收到图中显示的错误消息。问题是什么？ Refer to the exhibit. An administrator is trying to configure the switch but receives the error message that is displayed in the exhibit. What is the problem?
A. 管理员必须通过控制台端口连接才能访问全局配置模式。 The administrator must connect via the console port to access global configuration mode.
B. 必须使用整个命令 configure terminal。 The entire command, configure terminal, must be used.
C. 在发出命令之前，管理员必须先进入特权 EXEC 模式。 The administrator must first enter privileged EXEC mode before issuing the command.
D. 管理员已经处于全局配置模式。 The administrator is already in global configuration mode.
输入 IOS 命令时按 Tab 键有什么作用？ What function does pressing the Tab key have when an IOS command is entered?
A. 它中止当前命令并返回到配置模式。 It aborts the current command and returns to configuration mode.
B. 它将光标移动到下一行的开头。 It moves the cursor to the beginning of the next line.
C. 它完成命令中部分键入的单词的剩余部分。 It completes the remainder of a partially typed word in a command.
D. 它退出配置模式并返回到用户 EXEC 模式。 It exits configuration mode and returns to user EXEC mode.
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