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2016年上半年 上午试卷 综合知识
第 74 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.  network
 
  B.  session
 
  C.  transmission
 
  D.  application




 
 
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