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  第73题      
  章/节:   专业英语       

 
Together with the network layer,the transport layer is the heart of the protocol ( 71).The network layer provides end-to-end (72) delivery using datagrams or virtual circuits.The transport layer builds on the network layer to provide data transport from a process on a (73) machine to a process on a destination machine with a desired level of reliability that is independent of the physical (74) currently in use.It provides the abstractions that applications nedd to use the network.Without the (75) layer,the whole concept of layered protocols would make little sense.
 
 
  A.  connection
 
  B.  terminal
 
  C.  source
 
  D.  destination
 
 
 

 
  第75题    2011年上半年  
   63%
The presentation layer is concerned with the(71)and semantics of the information exchanged between two systems. The proc..
  第74题    2013年下半年  
   68%
OSPF is a link-state routing protocol. It is designed to be run internal to a single (71) system. Each OSPF router maint..
  第73题    2014年下半年  
   56%
Digital data can also be represented by(71)signals by use of a modem. The modem converts a series of binary voltage (..
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第73题    在手机中做本题