CompTIA Security Plus Mock Test Q241

Which of the following defines a business goal for system restoration and acceptable data loss?

A. MTTR
B. MTBF
C. RPO
D. Warm site


Correct Answer: C
Section: Compliance and Operational Security

Explanation:
The recovery point objective (RPO) defines the point at which the system needs to be restored. This could be where the system was two days before it crashed (whip out the old backup tapes) or five minutes before it crashed (requiring complete redundancy). This is an essential business goal insofar as system restoration and acceptable data loss is concerned.

Incorrect Answers:
A: The mean time to restore (MTTR) is the measurement of how long it takes to repair a system or component once a failure occurs. This means it has to do with TIME lost not data
loss restoration per se.
B: The mean time between failures (MTBF) is the measure of the anticipated incidence of failure for a system or component. This measurement determines the component’s
anticipated lifetime. This is thus also a TIME issue.
D: A warm site provides some of the capabilities of a hot site; it must provide computer systems and compatible media capabilities.

References:
Dulaney, Emmett and Chuck Eastton, CompTIA Security+ Study Guide, 6th Edition, Sybex, Indianapolis, 2014, pp. 9, 444