单选

网络管理中只允许被选择的人经由网络管理者访问网络的功能属于(25)功能。

A．设备管理
B．安全管理
C．计费管理
D．性能管理

试题出自试卷《软件水平考试（中级）网络工程师上午（基础知识）试题模拟试卷3》

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