Basically, a firewall is a 1._____ process or a set of integrated processes that runs on a router or 2._____ to control the

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问题 Basically, a firewall is a  1._____  process or a set of integrated processes that runs on a router or  2._____  to control the flow of networked application traffic  3.____ through it. Typically, firewalls are placed on the entry point to a  4.______  Network such as the Internet. They could be considered traffic cops. The firewall’s  5.______  is to ensure that all communication between an organization’s network and the Internet conform to the organization’s security policies.
4._____
A.local
B.national
C.private
D.Public

选项 A、 
B、 
C、 
D、 

答案D

解析
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