Which of the following is a benefit of using callback devices?

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Which of the following is a benefit of using callback devices?

A.
Provide an audit trail

B.
Can be used in a switchboard environment

C.
Permit unlimited user mobility

D.
Allow call forwarding

Explanation:
A callback feature hooks into the access control software and logs all authorized and unauthorized
access attempts, permitting the follow-up and further review of potential breaches. Call forwarding
(choice D) is a means of potentially bypassing callback control. By dialing through an authorized
phone number from an unauthorized phone number, a perpetrator can gain computer access. This
vulnerability can be controlled through callback systems that are available.

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