题目内容

若要求传输容量为2Gb/s，传输距离为200m，可选用下列 (44) 作为传输介质。

A. 光缆
B. 双绞线
C. 同轴电缆
D. 无线电波

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站点首页最常用的文件名是 (50) 。

A. index.html
B. default.html
C. resource.html
D. mainfrm.html

LAN网络接口卡处于OSI参考模型的 (40) 。

A. 表示层
B. 数据链路层
C. 物理层
D. 传输层

IP multicasting is a set of technologies that enable efficient delivery of data to many locations on a network. Rather than making multiple copies of a message intended to be distributed to multiple recipients at the (71) of origin of a message, multicasting initially sends just one (72) and does not copy it to the individual recipients until it reaches the closest common point on the network, thereby (73) the bandwidth consumed. Network performance is significantly (74) because it isn’t bogged down with the processing and transmission of several large data fries; each receiving computer doesn’t have to (75) the transmitting server for the file.

A. dropped
B. proved
C. improved
D. upgraded

下列选项中， (42) 是Novell网自身的传输协议。

A. NetBIOS
B. NetBEUI
C. SPX/IPX
D. TCP/IP