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

Explanation:
Spoofing is usually when you change your identity to portray yourself as someone else. One example is to change the source IP address in an IP packet to make it appear that the packet was sent by someone else.
Incorrect Answers:
A: The program that acts as another program is not called spoofing. This technique is called man in the middle.
B: This is called social engineering.
D: This is called social engineering.