问题:
A . A command that is available in every release of IOS, regardless of the version or deployment status.
B . A command that can be entered in any configuration mode.
C . A command that is universal in application and supports all protocols.
D . A command that is implemented in all foreign and domestic IOS version.
E . A command that is set once and affects the entire router.
● 参考解析
本题暂无解析
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