XK0-005 · Question #405
Which of the following is commonly implemented in external devices to provide unique event- based two-factor authentication credentials when a system is already implementing username and password…
The correct answer is E. PIN. The question asks for a second factor of authentication, provided by external devices, that generates unique event-based credentials when username and password are the first factor.
Question
Which of the following is commonly implemented in external devices to provide unique event- based two-factor authentication credentials when a system is already implementing username and password authentication?
Options
- ATACACS+
- BHOTP
- CBiometrics
- DLDAP
- EPIN
How the community answered
(32 responses)- A3% (1)
- B3% (1)
- C3% (1)
- E91% (29)
Why each option
The question asks for a second factor of authentication, provided by external devices, that generates unique event-based credentials when username and password are the first factor.
TACACS+ is an AAA protocol, not a specific type of unique, event-based credential.
HOTP (HMAC-based One-Time Password) is a prime example of unique event-based credentials generated by external devices, which typically generates a new code with each button press.
Biometrics are based on physical characteristics ('something you are'), not unique event-based credentials in the sense of a generated code.
LDAP is a directory access protocol, not a type of authentication credential itself.
A PIN, when used in conjunction with external devices such as smart cards or FIDO security keys, can be considered part of an event-based credential process, as each authentication event requires the PIN to unlock or activate the unique cryptographic material provided by the device for that specific interaction.
Concept tested: Two-factor authentication types (external devices, event-based)
Topics
Community Discussion
No community discussion yet for this question.