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免费智能真题库 > 历年试卷 > 网络工程师 > 2011年上半年 网络工程师 上午试卷 综合知识
  第73题      
  章/节:   计算机专业英语       

 
Border Gateway Protocol (BGP) is inter-autonomous system (71) protocol. BGP is based on a routing method called path vector routing. Distance vector routing is not a good candidate for inter-autonomous system routing because there are occasions on which the route with the smallest (72) count is not the preferred route. For example, we may not want a packet through an autonomous system that is not secure even though it is the shortest route. Also, distance vector routing is unstable due to the fact that the routers announce only the number of hop counts to the destination without actually defining the path that leads to that (73) .A router that receives a distance vector advertisement packet may be fooled if the shortest path is actually calculated through the receiving router itself. Link (74) routing is also not a good candidate for inter-autonomous system routing  because an internet is usually too big for this routing methoD. To use link state routing for the whole internet would require each router to have a huge link state database. It would also take a long time for each router to calculate its routing (75) using the Dijkstra algorism.
 
 
  A.  connection
 
  B.  window
 
  C.  source
 
  D.  destination
 
 
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  第73题    2016年下半年  
   84%
All three types of cryptography schemes have unique function mapping to specific applications.For example, the symmetric..
  第72题    2011年上半年  
   53%
Border Gateway Protocol (BGP) is inter-autonomous system (71) protocol. BGP is based on a routing method called path vec..
  第72题    2020年下半年  
   57%
The Address Resolution Protocol(ARP)was developed to enable communication on an Internetwork and perform a required func..
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