单项选择题

Which of the following network cable types requires grounding?（）

A.STP
B.UTP
C.Fiber
D.Serial

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At which of the following OSI model layers is HTTPS encryption performed?（）

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B.Layer 5
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单项选择题

Which of the following performs posture assessments for unknown devices that connect to thenetwork?（）

A.PKI
B.EAP
C.NAC
D.AAA