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【单选题】
使用单臂路由实现VLAN间通信时，通常的做法是采用子接口，而不是直接采用物理端口，这是因为（）。A.
物理接口不能封装802.1Q
B.
子接口转发速度更快
C.
用子接口能节约物理接口
D.
子接口可以配置Access端口或Trunk端口
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皮皮学刷刷变学霸
举一反三
【单选题】How does the man support his schooling?
A.
By his language skills.
B.
By a restaurant's donation.
C.
By an academic scholarship.
D.
By a part-time cook job.
【简答题】阅读理解。 One day Mr Jackson took Paul to his favourite restaurant. It was a French restaurant. The waiter was from France. But he didn't speak to them in French.'Would you like to see the menu?' he asked...
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