Senior management wants to thoroughly test a disaster recovery plan (DRP) for a mission-critical system. Which of the following would provide the MOST reliable results?

The correct answer is A. Full interruption test. A full interruption test completely shuts down the primary system and forces a failover to the disaster recovery environment, exactly as would occur in a real disaster. Because it reflects actual conditions, it provides the most reliable and realistic assessment of the DRP's viab

Submitted by yasin.bd· Apr 18, 2026Information Security Incident Management

Question

Options

AFull interruption test
BParallel test
CSimulation test
DStructured walk-through

How the community answered

(54 responses)

A
72% (39)
B
7% (4)
C
17% (9)
D
4% (2)

Explanation

A full interruption test completely shuts down the primary system and forces a failover to the disaster recovery environment, exactly as would occur in a real disaster. Because it reflects actual conditions, it provides the most reliable and realistic assessment of the DRP's viability. A parallel test (B) runs both primary and DR systems simultaneously, reducing risk but potentially masking failover issues. A simulation test (C) exercises the plan through a scenario without actual failover. A structured walk-through (D) is a tabletop exercise where participants discuss steps without any system activity. Each step up from walk-through toward full interruption increases realism and reliability of results.

Topics

#Disaster Recovery Plan (DRP)#DRP Testing#Business Continuity#Full Interruption Test

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