考题注意

njzhouyh · 发表于 2012-10-31 10:09:47

As a frame leaves a Layer 3 device, the Layer 2 encapsulation information is changed from what it was
when it entered the device. For what two reasons can this happen? (Choose two.)
A. The data is moving from 10BASE-TX to 100BASE-TX.
B. The WAN encapsulation type has changed.
C. The data format has changed from analog to digital.
D. The source and destination hosts are in the same subnet.
E. The source and destination MAC addresses have changed.

BE

slly · 发表于 2012-10-31 10:12:45

霎那_嗖嗖 · 发表于 2012-10-31 10:20:24

答案是对的啊。。

老哥 · 发表于 2012-10-31 23:20:06

答案就是这样啊

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[已解决] 考题注意

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