陶渊明

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.

A. loaded with cargo
B. in danger
C. not carrying cargo
D. discharging cargo

A. Y型过滤器
B. 直通过滤器
C. 旁通过滤器
D. 烧结过滤器

A. 正确
B. 错误