专业英语(计算机英语)问题
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专业英语(计算机英语)问题
1( ),short for modulator/demodulator,device that converts digital signals
into a representation of analog form(modulation) to send over phone lines;a
receiving modem then converts the analog signal back to a digital
signal(demodulation).
A.Server B.Network C.Modem D.Gateway
2( ),difference between the lowest and highest frequencies transmitted in a
particular channel or system.
A.Amplitude B.Bandwidth C.Bridge D.Network
3( )is a device that functions as both a router and a bridge.
A.Repeater B.Switch C.Gateway D.Brouter
4 A( ) channel allows simultaneous message exchange in both directions.It really
consists of two simplex channels,a forward channel and a reverse
channel,linking the same points.
A.half-duplex B.full-duplex C.simplex D.none of the
above
1( ),short for modulator/demodulator,device that converts digital signals
into a representation of analog form(modulation) to send over phone lines;a
receiving modem then converts the analog signal back to a digital
signal(demodulation).
A.Server B.Network C.Modem D.Gateway
2( ),difference between the lowest and highest frequencies transmitted in a
particular channel or system.
A.Amplitude B.Bandwidth C.Bridge D.Network
3( )is a device that functions as both a router and a bridge.
A.Repeater B.Switch C.Gateway D.Brouter
4 A( ) channel allows simultaneous message exchange in both directions.It really
consists of two simplex channels,a forward channel and a reverse
channel,linking the same points.
A.half-duplex B.full-duplex C.simplex D.none of the
above
1.C
2.A
3.B
4.B
再问: 第三题不是B啊
再答: 那就是C,网关。他问的是既做路由又做网桥的是什么设备。不是交换机的话,那就是网关?
再问: 晕死是D 没发改了 悲剧 不过要谢谢你 分给你把
再答: 呵呵,sorry
2.A
3.B
4.B
再问: 第三题不是B啊
再答: 那就是C,网关。他问的是既做路由又做网桥的是什么设备。不是交换机的话,那就是网关?
再问: 晕死是D 没发改了 悲剧 不过要谢谢你 分给你把
再答: 呵呵,sorry