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问题 单项选择题

交换机端口可以分为半双工与全双工两类。对于100Mb/s的全双工端口，端口带宽为( )。

A．100Mb/s

B．200Mb/s

C．400Mb/s

D．800Mb/s

答案

参考答案：B

解析： 对于10Mb/s的端口，半双工端口带宽为10Mb/s，而全双工端口带宽为20Mb/s对于 100Mbps的端口，半双工端口带宽为100Mb/s，而全双工端口带宽为200Mb/s。

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