CompTIA Security+ Question L-55

In order for Emily, a client, to logon to her desktop computer, she must provide her username, password, and a four digit PIN. Which of the following authentication methods is Emily using?

A. Three factor
B. Single factor
C. Two factor
D. Four factor

Answer: B

Explanation:
Single-factor authentication is when only one authentication factor is used. In this case, Something you know is being used as an authentication factor. Username, password, and PIN form part of Something you know.

CompTIA Security+ Question K-72

One of the most basic ways to protect the confidentiality of data on a laptop in the event the device is physically stolen is to implement which of the following?

A. File level encryption with alphanumeric passwords
B. Biometric authentication and cloud storage
C. Whole disk encryption with two-factor authentication
D. BIOS passwords and two-factor authentication

Answer: C

Explanation:
Whole-disk encryption only provides reasonable protection when the system is fully powered off. to make the most of the defensive strength of whole-disk encryption, a long, complex passphrase should be used to unlock the system on bootup. Combining whole-disk encryption with two factor authentication would further increase protection.

CompTIA Security+ Question H-49

A security administrator is tackling issues related to authenticating users at a remote site. There have been a large number of security incidents that resulted from either tailgating or impersonation of authorized users with valid credentials. The security administrator has been told to implement multifactor authentication in order to control facility access. To secure access to the remote facility, which of the following could be implemented without increasing the amount of space required at the entrance?

A. MOTD challenge and PIN pad
B. Retina scanner and fingerprint reader
C. Voice recognition and one-time PIN token
D. One-time PIN token and proximity reader

Answer: C

Explanation:
Authentication systems or methods are based on one or more of these five factors: Something you know, such as a password or PIN Something you have, such as a smart card, token, or identification device Something you are, such as your fingerprints or retinal pattern (often called biometrics) Something you do, such as an action you must take to complete authentication Somewhere you are (this is based on geolocation)

Multifactor authentication is authentication that uses two of more of the authentication factors listed above.

In this question, we can use voice recognition (something you are) and a one-time PIN token (something you have) to provide two factors of authentication. The one-time PIN token is a small device that generates a one-time PIN to enable access.

CompTIA Security+ Question E-59

Speaking a passphrase into a voice print analyzer is an example of which of the following security concepts?

A. Two factor authentication
B. Identification and authorization
C. Single sign-on
D. Single factor authentication

Answer: A

Explanation:
Two-factor authentication is when two different authentication factors are provided for authentication purposes. Speaking (Voice) – something they are. Passphrase – something they know.