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免费智能真题库 > 历年试卷 > 网络工程师 > 2010年上半年 网络工程师 上午试卷 综合知识
  第72题      
  章/节:   计算机专业英语       

 
Although a given waveform may contain frequencies over a very broad range, as a practical matter any transmission system will be able to accommodate only a limited band of (71) . This, in turn, limits the data rate that can be carried on the transmission (72) . A square wave has an infinite number of frequency components and hence an infinite (73). However, the peak amplitude of the Mi frequency component, kf,is only 1/k, so most of the (74) in this waveform is in the first few frequency components. In general, any digital waveform will have (75) bandwidth. If we attempt to transmit this waveform as a signal over any medium, the transmission system will limit the bandwidth that can be transmitteD.
 
 
  A.  procedure
 
  B.  function
 
  C.  route
 
  D.  medium
 
 
 

 
  第75题    2018年下半年  
   55%
The TTL field was originally designed to hold a time stamp, which was decremented by each visited router.The datagram wa..
  第73题    2020年下半年  
   59%
The Address Resolution Protocol(ARP)was developed to enable communication on an Internetwork and perform a required func..
  第73题    2024年上半年  
   92%
A software-defined wide area network(SD-WAN)is a wide area network that uses software-defined network technology,such as..
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第72题    在手机中做本题