Refer to the exhibit． Two buildings on the San Jose campus of a small company must be connected to use Ethernet with a bandwidth of at least 100 Mbps． The company is concerned about possible problems from voltage potential differences between the two buildings． Which media type should be used for the connection?
【正确答案】
D
【答案解析】电压不同，而且两个公司的距离不是很远，当然可以考虑光纤了。