76． (1) is a channel’s capacity which dire

问题单项选择题

76． (1) is a channel’s capacity which directly reflects the data transfer rate of the channe1.
(2) functions in a NetWare network which is used to define addressing schemes.
(3) is a network layer device that supports multiple LAN interfaces and segments LANs into smaller collision and broadcast domains.
(4) is the popular LAN developed under the direction of the IEEE802.3.
(5) is a device which enables digital microcomputers to communicate across analog telephone lines.

(5)

A．The repeater

B．The modem

C．The hub

D．The printer

答案

参考答案：B

解析：
译文的含义是：((1))指的是能直接反映传输系统的容量，选项B正确。((2))定义NetWare网络上所使用的寻址方案(addressing schemes)，选项C正确。((3))是一种连接多种网络接口和网段，缩小广播域(broadcast domains)和冲突域 (collision domains)的网络设备，选项D正确。
((4))是应用最为广泛的局域网，符合IEEE 802.3系列标准规范，选项C正确。((5))，调制解调器(modem)能使数字计算机通过模拟电话线进行通信，选项B正确。