试题与答案

10BASE-FB标准将网卡与有源集线器(Active HUB) 之间用光纤连接起来

题型:单项选择题

题目:

10BASE-FB标准将网卡与有源集线器(Active HUB) 之间用光纤连接起来,最大距离可达( )m。

A.500

B.185

C.2000

D.2400

答案:

参考答案:C

解析: 10BASE-FP、10BASE-FL与10BASE-FB (光缆),10BASE-FP、10BASE-FL与10BASE-FB是IEEE 802.3物理层标准中新补充的3种光纤传输介质标准,传输速率为10Mbps。 10BASE-FP标准的网卡与无源集线器之间用光纤连接起来,最大距离为500m。10BASE-FB标准将网卡与有源集线器之间的光纤连接起来,最大距离可达2000m。10BASE-FL标准将Ethernet中继器的数目由最多4个扩展到6个,以便增加Ethernet主干缆长度。

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