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问题详情

保护计算机网络免受外部的攻击所采用的常用技术称为______。

A、网络的容错技术

B、网络的防火墙技术

C、病毒的防治技术

D、网络信息加密技术

时间：2021-09-06 21:36 关键词：西安文理学院统考计算机

答案解析

B

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