CompTIA Security Plus Mock Test Q866

Which of the following types of security services are used to support authentication for remote users and devices?

A. Biometrics
B. HSM
C. RADIUS
D. TACACS


Correct Answer: C
Section: Access Control and Identity Management

Explanation:
RADIUS authentication phase takes place when a network client connects to a network access server (NAS) and provides authentication credentials. The NAS will then make use of
the authentication credentials to issue a RADIUS authentication request to the RADIUS server, which will then exchange RADIUS authentication messages with the NAS.

Incorrect Answers:
A: Biometrics refers to a collection of physical attributes of the human body that can be used as identification or an authentication factor. Devices cannot use this.
B: HSM is a physical computing device that protects and oversees digital keys for strong authentication and provides cryptoprocessing. It is not used for the authentication of remote
users and devices?
D: TACACS was used for communicating with an authentication server, not the actual authentication.

References:

What is a RADIUS Server?


Stewart, James Michael, CompTIA Security+ Review Guide, Sybex, Indianapolis, 2014, p. 285
http://en.wikipedia.org/wiki/Hardware_security_module
http://en.wikipedia.org/wiki/TACACS