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  第73题      
  章/节:   专业英语       

 
The use of network(71),systems that effectively isolate an organization's internal network structure from an(72)network, such as the INTERNET is becoming increasingly popular. These firewall systems typically act as application-layer(73)between networks, usually offering controlled TELNET, FTP, and SMTP access. With the emergence of more sophisticated(74)layer protocols designed to facilitate global information discovery , there exists a need to provide a general (75)for these protocols to transparently and securely traverse a firewall.
 
 
  A.  hosts
 
  B.  routers
 
  C.  gateways
 
  D.  offices
 
 
 

 
  第71题    2012年下半年  
   50%
A management domain typically contains a large amount of management information. Each individual item of(71)information ..
  第75题    2011年下半年  
   64%
One of the main resposibilities of ICMP is to report(71). Although technology has produced increasingly relaible transmi..
  第71题    2013年上半年  
   48%
Traditional network layer packet forwarding relies on the information provided by network layer(71)protocols, or static ..
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第73题    在手机中做本题