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【单选题】
在OSI参考模型中,与TCP/IP参考模型的网络接口层对应的是 __ 。A.
网络层
B.
应用层
C.
传输层
D.
物理层和数据链路层
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举一反三
【单选题】A compact disk (CD) is used to store music. Suppose that both the two independent channels of the true stereo music with the highest frequency 22.05 kHz are sampled at the Nyquist sampling rate, then ...
A.
f=44.1, R=16, T=783
B.
f=22.05, R=16, T=392
C.
f=44.1, R=15, T=700
D.
f=44.1, R=16, T=392
【单选题】For a combined FDM / TDM system, if the channel is divided into F sub bands and the time is divided into T slots, then the channel will be able to support f t ______concurrent calls.
A.
F
B.
T
C.
F+T
D.
F·T
【简答题】Suppose that Tang and Wilson must split a fixed 400 pounds of food between them. Tang’s utility function is U T = sqrt ( F 1 ) and Wilson’s utility function is UW = 1⁄2 sqrt ( F 2 ), where F 1 and F 2...
【简答题】Read the text and mark the statements T (true) or F (false). If graffiti is the art of today's streetwise agers, then skateboarding is their sport. Skateboarding has never been more popular.There ...
【简答题】vlan技术可以实现不同工作组(虚拟局域网vlan)之间隔离,把广播帧和单播帧都隔离了。实际需要隔离的是( )帧,不需要隔离( )帧。通过路由技术实现不同网络之间( )帧互通。三层交换机端口一般作为( )端口,此时交换机级联端口设置( ),然后创建下联二层交换机相应的VLAN,并配置该Vlan(虚接口)的地址,开启( )功能。
【简答题】L ook at the following utterances, then decide which involve gesturally deictic expressions and which involve symbolically deictic expressions. 下面各句中哪些指示语是手势用法,哪些是象征用法 a. This city is really beautiful...
【简答题】组建虚拟局域网需要__________设备。
【单选题】1 Listening for Specific Information Listen to the recording. While you are listening, fill in the blanks with T if the statements are true or F if they are false. Then compare your answers with those...
A.
true
B.
false
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