单项选择题

Which of the following describes a static NAT？（）

A.A static NAT uses a one to many mapping.
B.A static NAT uses a many to one mapping.
C.A static NAT uses a many to many mapping.
D.A static NAT uses a one to one mapping.

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单项选择题

Which of the following encryption methods is often used along with L2TP？（）

A.S/MIME
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单项选择题

Which of the following specifies a set of consistent requirements for a workstation or server？（）

A.Vulnerability assessment
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