What type of authentication is exemplified by swiping a key card and entering a password?

The scenario of swiping a key card followed by entering a password is an example of multi-factor authentication. This process involves two distinct types of authentication factors: something you have (the key card) and something you know (the password). Multi-factor authentication enhances security by requiring multiple verification methods, making it significantly more difficult for unauthorized users to gain access.

The use of two different forms of authentication is crucial in today’s security landscape, as it adds layers of protection against potential breaches. By requiring both a physical token (the key card) and a knowledge-based credential (the password), multi-factor authentication helps to ensure that access is granted only to legitimate users.

Other authentication methods, such as single sign-on or single-factor authentication, do not incorporate this dual approach, as single sign-on typically allows access through a single set of credentials across various platforms, and single-factor authentication relies on only one verification method. Biometric authentication involves using physical traits for verification, which is not demonstrated in this scenario.