Which of the following provides a user ID and password together?

A.
Authorization

B.
Auditing

C.
Authentication

D.
Identification

Explanation:
Authentication generally requires one or more of the following:
Something you know: a password, code, PIN, combination, or secret phrase.
Something you have: a smart card, token device, or key.
Something you are: a fingerprint, a retina scan, or voice recognition; often referred to as biometrics,
discussed later in this chapter.
Somewhere you are: a physical or logical location.
Something you do: typing rhythm, a secret handshake, or a private knock.