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

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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 本题主要考查“防火墙”。Network Card意为“网卡”;protocol意为“协议”;Firewall意为“防火墙”;Router意为“路由器”。答案为C。
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