94. What is Authentication and What are its Various Forms?
Authentication is a process that verifies a user's credentials before granting access to a system, network, or device. The following are the various forms of authentication:Single-factor authentication: It is the most basic and widely used method of authentication. To allow access to a system, this method just requires one verification method, such as a password or a security pin.Two-factor authentication (also known as 2FA) entails the use of a second factor to confirm a user's identity. You must input the username, password, and OTP or PIN for verification using this method.
