题目内容
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[主观题]
What is a spoofing attack?()
A.A hacker pretends to be the superuser and spoofs a user into allowing him into the system
B.A hacker calls a user and pretends to be a system administrator in order to get the user’s password
C.A computer (or network) pretends to be a trusted host(or network)
D.A hacker gains entrance to the building where the network resides and accesses the system by pretending to be an employee
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