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  第73题      
  章/节:   计算机专业英语       

 
The Address Resolution Protocol(ARP)was developed to enable communication on an Internetwork and perform a required function in IP routing.ARP lies between layers(71)of the OSI model,and allows computers to introduce each other across a network prior to communication.APR finds the(72 )address of a host from its known(73 )address.Before a device sends a datagram to another device,it looks in its ARP cache to see if there is a MAC address and corresponding IP address for the destination device.If there is no entry,the souree device sends a(74)message to every device on the network.Each device compares the IP address to its own.Only the device with the matching IP address replies with a packet containing the MAC address for the device(except in the case of “proxy ARP”).The source device adds the(75 )device MAC address to its ARP table for future reference.
 
 
  A.  IP
 
  B.  physical
 
  C.  MAC
 
  D.  virtual
 
 
 

 
  第72题    2015年上半年  
   57%
Traditional network layer packet forwarding relies on the information provided by network layer(71)protocols, or stati..
  第75题    2019年上半年  
   49%
Network security consists of policies and practices to prevent and monitor(71)access,misuse, modification, or denial o..
  第71题    2014年上半年  
   57%
The traditional way of allocating a single channel among multiple competing users is to chop up its (71) by using one of..
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