FUNDAMENTALS OF COMPUTER

Detailed explanation-1: -There are three basic types of authentication. The first is knowledge-based-something like a password or PIN code that only the identified user would know. The second is property-based, meaning the user possesses an access card, key, key fob or authorized device unique to them. The third is biologically based.

Detailed explanation-2: -Authentication factors can be classified into three groups: something you know: a password or personal identification number (PIN); something you have: a token, such as bank card; something you are: biometrics, such as fingerprints and voice recognition.

Detailed explanation-3: -The three authentication factors are: Knowledge Factor – something you know, e.g., password. Possession Factor – something you have, e.g., mobile phone. Inherence Factor – something you are, e.g., fingerprint.

Detailed explanation-4: -Three-factor authentication (3FA) is the use of identity-confirming credentials from three separate categories of authentication factors – typically, the knowledge, possession and inherence categories. Multifactor authentication dramatically improves security.

Detailed explanation-5: -Factors include: (i) something you know (e.g., password/personal identification number [PIN]); (ii) something you have (e.g., cryptographic identification device, token); or (iii) something you are (e.g., biometric). Authentication using two or more different factors to achieve authentication.