单选题interface fasterethnet1/0，ip access-group 1 in表示（）A数据报从路由器进入局域网时数据被检查B数据报从局域网进入路由器时被检查C两个方向都检查D需要根据access-list1的内容来判断
单选题
interface fasterethnet1/0，ip access-group 1 in表示（）
A
数据报从路由器进入局域网时数据被检查
B
数据报从局域网进入路由器时被检查
C
两个方向都检查
D
需要根据access-list1的内容来判断
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