[单选题]哪个命令可以成功测试网络：()

正确答案 ：B

Routerping192.5.5.30

[多选题]Why is full-duplex Ethernet superior to its single-duplex counterpart? (Select two answer choices.)

正确答案 ：BD

It operates without collisions

It provides faster data transfer

解析：解析：Explanation:

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