Which of the following statements about the authentication concept of information security management is true?

A.
It ensures that modifications are not made to data by unauthorized personnel or processes.

B.
It determines the actions and behaviors of a single individual within a system, and identifies that particular individual.

C.
It ensures the reliable and timely access to resources.

D.
It establishes the users’ identity and ensures that the users are who they say they are.

Explanation:

The concept of authentication establishes the users’ identity and ensures that the users are who they say they are.
Answer option C is incorrect. The concept of availability ensures the reliable and timely access to data or resources.
Answer option A is incorrect. The concept of integrity ensures that modifications are not made to data by unauthorized personnel or processes.

Answer option B is incorrect. The concept of accountability determines the actions and behaviors of a single individual within a system, and identifies that particular individual. Reference: "http.//en.wikipedia.org/wiki/Information_security"