What is the Maximum Tolerable Downtime (MTD)?

A.
Maximum elapsed time required to complete recovery of application data

B.
Minimum elapsed time required to complete recovery of application data

C.
Maximum elapsed time required to move back to primary site after a major disruption

D.
It is maximum delay businesses can tolerate and still remain viable

Explanation:
The outage time that can be endured by a company is referred to as the maximum tolerable downtime (MTD).
Incorrect Answers:
A: Maximum Tolerable Downtime does not refer to application data. Maximum Tolerable Downtime is the time
delay that the business can tolerate.
B: Maximum Tolerable Downtime does not refer to application data. Maximum Tolerable Downtime is the time
delay that the business can tolerate.
C: Maximum Tolerable Downtime does not refer to the time needed to move back to the primary site after a
disruption. Maximum Tolerable Downtime is the time delay that the business can tolerate.

Harris, Shon, All In One CISSP Exam Guide, 6th Edition, McGraw-Hill, 2013, p. 909