Implementing Additional Authentication Factor with "Something You Have" Principle

An administrator wants to implement an additional authentication factor to the remote SSH servers.

Which of the following accomplishes this goal with the principle of something you have?

A.

Certificate

B.

Pattern

C.

Password

D.

Fingerprint.

A.

Option A: Certificate Certificates are a type of digital authentication that can be used to confirm a user's identity. They are typically issued by a trusted third party and contain information such as the user's name and public key. In the context of SSH servers, certificates can be used as an additional authentication factor by requiring the user to present a valid certificate in addition to their password.

Option B: Pattern Patterns are not typically used as an authentication factor in the context of remote SSH servers. They are more commonly used as a method of unlocking mobile devices or other types of physical access control.

Option C: Password Passwords are a common form of authentication that require the user to provide a secret phrase or code that is known only to them. While passwords can provide a basic level of security, they can also be vulnerable to attacks such as brute force or password guessing.

Option D: Fingerprint Fingerprints are a biometric authentication factor that can be used to confirm a user's identity. In the context of SSH servers, fingerprints can be used as an additional authentication factor by requiring the user to provide a valid fingerprint scan in addition to their password.

Answer: Of the four options given, the one that best aligns with the principle of "something you have" is option A: Certificate. Certificates can be used as an additional authentication factor by requiring the user to present a valid certificate in addition to their password. This adds an extra layer of security to the authentication process, as an attacker would need to possess both the user's password and their certificate in order to gain access.