Question 140
An ISMS reviewer examines the following case: A manufacturer tests restoring files yet has no plan for essential customer service processes. What evidence would most directly show that the response is operating effectively?
Explanation
Correct Answer
Disruption tests demonstrate essential business activity continues or resumes within approved limits. This is the relevant test result for the scenario in which a manufacturer tests restoring files yet has no plan for essential customer service processes. It verifies the action to coordinate information security continuity needs with business continuity and recovery arrangements. The corresponding operating design is to set critical activity priorities, recovery targets, roles, alternate capability and restore testing. The result should rule out the error of assuming a successful file restoration is equivalent to an exercised end-to-end continuity plan.
Incorrect Answers
Supplier reviews, account evidence and contracts verify agreed security responsibilities operate. This may be a useful result for supplier security requirements in another case, such as when a manufacturer learns its MSP has deployed unapproved remote support accounts to its network. It does not establish effectiveness of the controls necessary for the described problem. The relevant evidence is that disruption tests demonstrate essential business activity continues or resumes within approved limits. Case: A manufacturer tests restoring files yet has no plan for essential customer service processes.
Exercises prove relevant parties receive accurate timely communications through approved routes. This may be a useful result for information security communication plan in another case, such as when a public utility discovers employees are unsure when and where to report suspicious remote access. It does not establish effectiveness of the controls necessary for the described problem. The relevant evidence is that disruption tests demonstrate essential business activity continues or resumes within approved limits. Case: A manufacturer tests restoring files yet has no plan for essential customer service processes.
Scan and change records show prioritized weaknesses are corrected within approved windows. This may be a useful result for vulnerability remediation operations in another case, such as when a university patches workstations but leaves public research application servers untracked. It does not establish effectiveness of the controls necessary for the described problem. The relevant evidence is that disruption tests demonstrate essential business activity continues or resumes within approved limits. Case: A manufacturer tests restoring files yet has no plan for essential customer service processes.





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