【单选题】【消耗次数:1】
如果信号不经过调制直接传送到信道上进行传输,则称为( )
基带传输
频带传输
串行传输
宽带传输
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相关题目
【单选题】 利用模拟信道传输数字信号的方法称为( )。
①  基带传输
②  调幅
③  调频
④  频带传输
【单选题】 利用模拟信道传输数字信号的方法称为( )。
①  基带传输
②  调幅
③  调频
④  频带传输
【单选题】 基带系统是使用( ) 进行传输的。
①  模拟信号
②  多信道模拟信号
③  数字信号
④  多路数字信号
【单选题】 传输介质一次传输一位的传输方式是( )。
①  串行传输
②  单工传输
③  异步传输
④  并行传输
【单选题】 传输介质一次传输一位的传输方式是( )。
①  串行传输
②  单工传输
③  异步传输
④  并行传输
【单选题】 在传输介质上一次传输一位的传输方式是( )。
①  串行传输
②  单工传输
③  异步传输
④  并行传输
【单选题】 将物理信道总频带分割成若干个子信道,每个子信道传输一路信号,这就是( )
①  同步时分多路复用
②  空分多路复用
③  异步时分多路复用
④  频分多路复用
【单选题】 若采用4相调制技术,在1200波特的信道上信息的传输率为( )bps。
①  1200
②  2400
③  4800
④  9600
【简答题】 在信道中传输花费的时间称为[填空]。
【单选题】 顺序流式传输经常被称为( )流式传输。
①  HTTP
②  FTP
③  RTP
④  TCP
随机题目
【单选题】 Its ( ) that he has been away from home.
①  evident
②  important
③  genuine
④  alternative
【单选题】 The company has a primary task to ( )its brand name and improve its brand names attractiveness.
①  international
②  internationalization
③  internationalize
④  internationality
【单选题】 With the rapid development of the economy, all ( ) of our life have changed.
①  filed
②  fileds
③  aspect
④  aspects
【单选题】 Nancy was the only woman to()the experiment and was among the few volunteers who died from it.
①  participate in
②  shared in
③  joined in
④  enter into
【单选题】 The policemen( ) many cases by following the footprints left at the scene of crime.
①  investigate
②  investigated
③  has investigated
④  have investigated
【单选题】 His final success ( ) his years of hard work.
①  depends on
②  focuses on
③  concentrates on
④  dwells on
【单选题】 This machine is extremely ( ) because it runs on half-price electricity.
①  economic
②  economical
③  economy
④  economist
【单选题】 More local ( )will be created, particularly in service industries.
①  employee
②  ?employ
③  ?employer
④  ?employment
【单选题】 Doctors should ( )prevention of diseases rather than cure.
①  dwell on
②  focus on
③  depend on
④  rely on
【单选题】 The ( )to her success is her confidence and persistence.
①  road
②  way
③  key
④  cause