Making sure that the data is accessible when and where it is needed is which of the following?

A.
confidentiality

B.
integrity

C.
acceptability

D.
availability

Explanation:
Availability protection ensures reliability and timely access to data and resources to authorized individuals.
Network devices, computers, and applications should provide adequate functionality to perform in a predictable
manner with an acceptable level of performance. They should be able to recover from disruptions in a secure
and quick fashion so productivity is not negatively affected. Necessary protection mechanisms must be in place
to protect against inside and outside threats that could affect the availability and productivity of all businessprocessing components.
Incorrect Answers:
A: Confidentiality ensures that the necessary level of secrecy is enforced at each junction of data processing
and prevents unauthorized disclosure. This is not what is described in the question.
B: Integrity ensures that data is unaltered. This is not what is described in the question.
C: Making sure that the data is accessible when and where it is needed is not the definition of acceptability.

Harris, Shon, All In One CISSP Exam Guide, 6th Edition, McGraw-Hill, New York, 2013, p. 23