Which network device allows two-factor authentication to be implemented, based on the usage of
smart cards?

A.
Routers

B.
Switches and bridges

C.
Remote access servers

D.
Modems

Explanation:
Remote access servers (RAS) connections can be secured through two-factor authentication. The
user must have the physical card and a PIN to access the system.
Incorrect Answers:
A: Routers, being the first line of defense, are usually configured with access entries to allow only
authorized traffic.
B: Switches and bridges are used to improve the efficiency of the network.
D: Modems enable the digital signals from a computer to be connected to the analog telephone
line.References:Mike Pastore and Emmett Dulaney, Security+ Study Guide, 2nd Edition, Sybex,
Alameda, 2004, p. 110 – 114.