单选题
Various security measures are recommended EXCEPT ______.
A、
turning off network services
B、
employing a full-inspection firewall
C、
making sure that servers and applications are patched
D、
eliminating all unneeded programs
【正确答案】
A
【答案解析】
其依据是“Turn off unnecessary network services。”即关闭不必要的网络服务，而不是关闭所有的网络服务。一字之差，却相去甚远，要注意辨析。
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