Which of the following disaster recovery testing techniques is the MOST cost-effective way to determine the effectiveness of the plan?
A . Preparedness tests
B . Paper tests
C . Full operational tests
D . Actual service disruption
Answer: A
Explanation:
Preparedness tests would involve simulation of the entire test in phases and help the team better understand and prepare for the actual test scenario. Options B, C and D are not cost-effective ways to establish plan effectiveness. Paper tests in a walk-through do not include simulation and so there is less learning and it is difficult to obtain evidence that the team has understood the test plan. Option D is not recommended in most cases. Option C would require an approval from management is not easy or practical to test in most scenarios and may itself trigger a disaster.
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