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  第72题      
  章/节:   计算机专业英语       

 
The de facto standard Application Program Interface (API) for TCP/IP applications is the ”sockets” interface. Although this API was developed for (71) in the early 1980s it has also been implemented on a wide variety of non-Unix systems. TCP/IP (72) written using the sockets API have in the past enjoyed a high degree of portability and we would like the same (73) with IPv6 applications. But changes are required to the sockets API to support IPv6 and this memo describes these changes. These include a new socket address stmcture to carry IPv6 (74) , new address conversion functions, and some new socket options. These extensions are designed to provide access to the basic IPv6 features required by TCP and UDP applications, including multicasting, while introducing a minimum of change into the system and providing complete (75) for existing IPv4 applications.
 
 
  A.  applications
 
  B.  networks
 
  C.  protocols
 
  D.  systems
 
 
 

 
  第74题    2022年上半年  
   76%
A network attack is an attempt to gain(71)access to an organization’s network,with the objective of stealing data or ..
  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74题    2014年上半年  
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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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