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为了保证内部网络的安全,下面的做法中无效的是__

单选题
2021-09-01 16:11
A、制定安全管理制度
B、在内部网与因特网之间加防火墙
C、给使用人员设定不同的权限
D、购买高清显示器
查看答案

正确答案
D

试题解析

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