Which of the following penetration testing techniques automatically tests every phone line in an
exchange and tries to locate modems that are attached to the network?

A.
Demon dialing

B.
Sniffing

C.
Social engineering

D.
Dumpster diving

Explanation:
The demon dialing technique automatically tests every phone line in an exchange
and tries to locate modems that are attached to the network. Information about these modems can
protocol analyzer is used to capture data packets that are later decoded to collect information such
used for searching paper disposal areas for unshredded or otherwise improperly disposed-of
getting information (like passwords) just by asking for them.