2. 计算机
  3. (75) is a mechanism used for protecting the users outside of network from accessing some non-authorized computer resources.

(75) is a mechanism used for protecting the users outside of network from accessing some non-authorized computer resources.

admin2010-05-10  61
问题 (75) is a mechanism used for protecting the users outside of network from accessing some non-authorized computer resources.
选项 A、Network Card
B、Protocol
C、firewall
D、Router
答案C
解析 防火墙是一种机制，用来防止用户从外部网络访问一些未经授权的计算机资源。
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