An attack that can be perpetrated against a remote user’s callback access
control is:

A.
Redialing.

B.
Call forwarding.

C.
A maintenance hook.

D.
A Trojan horse.

Explanation:
The correct answer is Call forwarding. A cracker can have a person’s call forwarded
to another number to foil the callback system. Answer “A Trojan horse” is
incorrect because it is an example of malicious code embedded in
useful code. Answer “A maintenance hook” is incorrect because it might enable bypassing
controls of a system through a means used for debugging or maintenance.
Answer Redialing is incorrect because it is a distracter.