免费智能真题库 > 历年试卷 > 网络工程师 > 2022年下半年 网络工程师 上午试卷 综合知识
  第75题      
  章/节:   计算机专业英语       

 
Network firewalls are security devices used to stolo or mitigate(71) access to private networks connected to the Internet, especially intranets. The only traffic allowed on the network is defined via firewall (72)-any other traffic attempting to access the network is blocked. Networkfirewalls sit at the (73) line of a network, acting as a communications liaison between intenal and extenal devices, When properly configured, a firewall allows users to access any of the resources they need while simultaneously keeping out unwanted accesses. In addition to limiting access to a protected computer and network, a firewall can (74) all traffic coming into or leaving a network, and manage remote access to a private network through secure authentication certificates and logins. (75) firewalls examine every packet that passes through the network and then accept or deny it as defined by rules set by the user.
 
 
  A.  Application-layer
 
  B.  Packet filtering
 
  C.  Circuit-level
 
  D.  Proxy server
 
 
 

 
  第75题    2009年上半年  
   68%
The Border Gateway Protocol (BGP) is an interautonomous system (71) protocol. The primary function of a BGP speaking sys..
  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    2010年下半年  
   38%
The metric assigned to each network depends on the type of protocol. Some simple protocol, like RIP, treats each network..
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