CompTIA Security Plus Mock Test Q920

Which of the following BEST describes using a smart card and typing in a PIN to gain access to a system?

A. Biometrics
B. PKI
C. Single factor authentication
D. Multifactor authentication

Correct Answer: D
Section: Access Control and Identity Management

Explanation:
Multifactor authentication requires a user to provide two or more authentication factors for authentication purposes. In this case, a smart card (something they have) is one and a PIN
(something they know) is the second.

Incorrect Answers:
A: Biometrics refers to a collection of physical attributes of the human body that can be used for authentication. It is an authentication factor type. Something they are.
B: Public Key Infrastructure (PKI) centers on proving the identity of communication partners. PKI makes use of asymmetric cryptographic solutions to securely exchange sessionbased
symmetric encryption keys. PKI also makes use of hashing to protect message integrity.
C: Single factor authentication only requires one authentication factor for authentication purposes.

References:
Stewart, James Michael, CompTIA Security+ Review Guide, Sybex, Indianapolis, 2014, pp. 282, 285, 350