ISC CISSP Practice Test 11
Question 100
A manufacturer wants to compare loss from server downtime under different restoration speeds and has reliable annual incident data. The organization has now implemented this response: Perform quantitative analysis of estimated event frequency and loss magnitude for each recovery option. Which observation would MOST directly demonstrate that the security objective was met?
- A risk register records scenario assumptions, impact dimensions, likelihood bands and review dates.
- The signed exception includes accountable owner, scope, duration, compensating controls and review threshold.
- An approved change ticket for Perform quantitative analysis of estimated event frequency and loss magnitude for each recovery option. without a completed verification result.
- The analysis documents annualized loss estimates, uncertainty and sensitivity to outage duration.
Explanation
Correct Answer
D:The analysis documents annualized loss estimates, uncertainty and sensitivity to outage duration. This validates that frequency and impact estimates can compare expected annualized exposure for competing mitigations.
Incorrect Answers
A:This demonstrates controls in another circumstance: A manufacturing risk assessment scores every scenario 'high' but lacks likelihood assumptions and cannot prioritize investment.
B:This other observation is relevant to: A business owner asks to accept unpatched internet-facing service risk indefinitely because 'nothing has happened yet.'
C:An approved change without an executed test cannot prove operating effectiveness. The needed evidence is The analysis documents annualized loss estimates, uncertainty and sensitivity to outage duration.
Question 101
A previous security situation was: A manufacturer wants to compare loss from server downtime under different restoration speeds and has reliable annual incident data. Now the requirement changes: New data shows disruptive incidents are highly uncertain and historical counts are sparse. Which NEW action BEST answers the changed need?
- Perform quantitative analysis of estimated event frequency and loss magnitude for each recovery option.
- Use only a red-amber-green label with no defined business loss assumptions.
- The analysis documents annualized loss estimates, uncertainty and sensitivity to outage duration.
- Add scenario ranges and qualitative judgement rather than presenting false numeric precision.
Explanation
Correct Answer
D:Uncertainty requires ranges and explicit assumptions, not unjustified point estimates. The revised action is Add scenario ranges and qualitative judgement rather than presenting false numeric precision.
Incorrect Answers
A:This is the appropriate response to the original situation: Frequency and impact estimates can compare expected annualized exposure for competing mitigations. It does not directly meet the new condition.
B:This remains inappropriate: A color label cannot compute the financial tradeoff the owner requests.
C:This is a record of how the initial safeguard would be checked, not an action implementing the newly requested condition: The analysis documents annualized loss estimates, uncertainty and sensitivity to outage duration.
Question 102
A business owner asks to accept unpatched internet-facing service risk indefinitely because 'nothing has happened yet.' What should the security manager recommend as the MOST appropriate response to the current requirement?
- Reopen the acceptance promptly and implement prioritized patching or isolation.
- Measure residual exposure, treatment outcomes and risk indicators against business objectives, not activity counts alone.
- Require documented residual-risk acceptance with an expiry, compensating controls and periodic re-evaluation.
- Record informal verbal acceptance and stop security monitoring.
Explanation
Correct Answer
C:Nonoccurrence of a breach is not evidence that future loss fits tolerance. This directly addresses the stated situation.
Incorrect Answers
A:This is appropriate for a later condition (A public exploit emerges that directly targets the vulnerable service.), but it does not directly resolve the initial need. Threat change invalidates stale assumptions and may require urgent treatment.
B:This response addresses a different condition: An executive committee wants monthly risk dashboards, but the available report counts blocked phishing messages as proof that material risk fell. The present case requires the measure described by Require documented residual-risk acceptance with an expiry, compensating controls and periodic re-evaluation.
D:Untracked acceptance cannot support oversight or detect changes in exposure. The proposal would not be defensible for this case.
Question 103
A business owner asks to accept unpatched internet-facing service risk indefinitely because 'nothing has happened yet.' A designer proposes: Record informal verbal acceptance and stop security monitoring. What is the MOST significant security deficiency in this proposal?
- Threat change invalidates stale assumptions and may require urgent treatment.
- Common assessed exposure supports rational treatment and investment decisions.
- Untracked acceptance cannot support oversight or detect changes in exposure.
- Executive attention alone is neither probability nor loss magnitude.
Explanation
Correct Answer
C:Untracked acceptance cannot support oversight or detect changes in exposure. This is the direct weakness in the proposed action.
Incorrect Answers
A:This explains a later shift in requirements (A public exploit emerges that directly targets the vulnerable service.), not the failure of the current proposal.
B:This is an advantage of another design (Establish a documented scoring method grounded in business impact, likelihood evidence and risk criteria.), not the particular flaw of Record informal verbal acceptance and stop security monitoring.
D:This is a limitation elsewhere: A manufacturing risk assessment scores every scenario 'high' but lacks likelihood assumptions and cannot prioritize investment. It does not explain the deficiency of the specified proposed approach.
Question 104
A business owner asks to accept unpatched internet-facing service risk indefinitely because 'nothing has happened yet.' The organization has now implemented this response: Require documented residual-risk acceptance with an expiry, compensating controls and periodic re-evaluation. Which observation would MOST directly demonstrate that the security objective was met?
- Dependency analysis demonstrates common provider failure paths and accountable mitigation owners.
- An approved change ticket for Require documented residual-risk acceptance with an expiry, compensating controls and periodic re-evaluation. without a completed verification result.
- The signed exception includes accountable owner, scope, duration, compensating controls and review threshold.
- An approved treatment plan shows residual loss, owners and criteria for deployment acceptance.
Explanation
Correct Answer
C:The signed exception includes accountable owner, scope, duration, compensating controls and review threshold. This validates that nonoccurrence of a breach is not evidence that future loss fits tolerance.
Incorrect Answers
A:This other observation is relevant to: A supplier merger causes the same outsourced identity service to support five formerly independent business units.
B:An approved change without an executed test cannot prove operating effectiveness. The needed evidence is The signed exception includes accountable owner, scope, duration, compensating controls and review threshold.
D:This demonstrates controls in another circumstance: A healthcare cloud migration has significant residual availability risk that exceeds approved tolerance despite proposed controls.
Question 105
A business owner asks to accept unpatched internet-facing service risk indefinitely because 'nothing has happened yet.' The team must implement a defensible safeguard AND demonstrate that it works. Which TWO entries form that control-and-evidence pair? (Select TWO.)
- Perform quantitative analysis of estimated event frequency and loss magnitude for each recovery option.
- Require documented residual-risk acceptance with an expiry, compensating controls and periodic re-evaluation.
- The signed exception includes accountable owner, scope, duration, compensating controls and review threshold.
- Record informal verbal acceptance and stop security monitoring.
- Reopen the acceptance promptly and implement prioritized patching or isolation.
Explanation
Correct Answers
B:Correct control. Nonoccurrence of a breach is not evidence that future loss fits tolerance.
C:Correct verification. The specific evidence is: The signed exception includes accountable owner, scope, duration, compensating controls and review threshold.
Incorrect Answers
A:The proposed control fits another scenario: A manufacturer wants to compare loss from server downtime under different restoration speeds and has reliable annual incident data. It does not directly address this scenario's primary requirement.
D:Untracked acceptance cannot support oversight or detect changes in exposure.
E:This concerns a later and different need: A public exploit emerges that directly targets the vulnerable service. Threat change invalidates stale assumptions and may require urgent treatment.
Question 106
A supplier merger causes the same outsourced identity service to support five formerly independent business units. What should the security manager recommend as the MOST appropriate response to the current requirement?
- Establish a documented scoring method grounded in business impact, likelihood evidence and risk criteria.
- Assess concentrated third-party failure risk and include dependency relationships in the enterprise risk register.
- Score each unit's risk separately and assume failures cannot affect other units.
- Activate a migration and continuity plan with milestone verification and fallback arrangements.
Explanation
Correct Answer
B:Shared dependencies can turn apparently independent risks into a correlated loss scenario. This directly addresses the stated situation.
Incorrect Answers
A:This response addresses a different condition: A manufacturing risk assessment scores every scenario 'high' but lacks likelihood assumptions and cannot prioritize investment. The present case requires the measure described by Assess concentrated third-party failure risk and include dependency relationships in the enterprise risk register.
C:Ignoring concentration underestimates enterprise-wide exposure and recovery impact. The proposal would not be defensible for this case.
D:This is appropriate for a later condition (The provider announces a scheduled shutdown of its legacy authentication API.), but it does not directly resolve the initial need. A known service retirement introduces a time-bound operational change requirement.
Question 107
A supplier merger causes the same outsourced identity service to support five formerly independent business units. A designer proposes: Score each unit's risk separately and assume failures cannot affect other units. What is the MOST significant security deficiency in this proposal?
- Residual risk must be evaluated by the accountable business risk owner against tolerance.
- Ignoring concentration underestimates enterprise-wide exposure and recovery impact.
- Outsourcing technology does not eliminate the customer's business risk ownership.
- A known service retirement introduces a time-bound operational change requirement.
Explanation
Correct Answer
B:Ignoring concentration underestimates enterprise-wide exposure and recovery impact. This is the direct weakness in the proposed action.
Incorrect Answers
A:This is an advantage of another design (Seek additional treatment or a formally authorized risk decision before accepting residual exposure.), not the particular flaw of Score each unit's risk separately and assume failures cannot affect other units.
C:This is a limitation elsewhere: A healthcare cloud migration has significant residual availability risk that exceeds approved tolerance despite proposed controls. It does not explain the deficiency of the specified proposed approach.
D:This explains a later shift in requirements (The provider announces a scheduled shutdown of its legacy authentication API.), not the failure of the current proposal.
Question 108
A supplier merger causes the same outsourced identity service to support five formerly independent business units. The organization has now implemented this response: Assess concentrated third-party failure risk and include dependency relationships in the enterprise risk register. Which observation would MOST directly demonstrate that the security objective was met?
- An approved change ticket for Assess concentrated third-party failure risk and include dependency relationships in the enterprise risk register. without a completed verification result.
- Dependency analysis demonstrates common provider failure paths and accountable mitigation owners.
- The analysis documents annualized loss estimates, uncertainty and sensitivity to outage duration.
- Dashboard trends reconcile risk scenarios, control effectiveness and loss or near-miss indicators.
Explanation
Correct Answer
B:Dependency analysis demonstrates common provider failure paths and accountable mitigation owners. This validates that shared dependencies can turn apparently independent risks into a correlated loss scenario.
Incorrect Answers
A:An approved change without an executed test cannot prove operating effectiveness. The needed evidence is Dependency analysis demonstrates common provider failure paths and accountable mitigation owners.
C:This demonstrates controls in another circumstance: A manufacturer wants to compare loss from server downtime under different restoration speeds and has reliable annual incident data.
D:This other observation is relevant to: An executive committee wants monthly risk dashboards, but the available report counts blocked phishing messages as proof that material risk fell.
Question 109
A previous security situation was: A supplier merger causes the same outsourced identity service to support five formerly independent business units. Now the requirement changes: The provider announces a scheduled shutdown of its legacy authentication API. Which NEW action BEST answers the changed need?
- Dependency analysis demonstrates common provider failure paths and accountable mitigation owners.
- Activate a migration and continuity plan with milestone verification and fallback arrangements.
- Assess concentrated third-party failure risk and include dependency relationships in the enterprise risk register.
- Score each unit's risk separately and assume failures cannot affect other units.
Explanation
Correct Answer
B:A known service retirement introduces a time-bound operational change requirement. The revised action is Activate a migration and continuity plan with milestone verification and fallback arrangements.
Incorrect Answers
A:This is a record of how the initial safeguard would be checked, not an action implementing the newly requested condition: Dependency analysis demonstrates common provider failure paths and accountable mitigation owners.
C:This is the appropriate response to the original situation: Shared dependencies can turn apparently independent risks into a correlated loss scenario. It does not directly meet the new condition.
D:This remains inappropriate: Ignoring concentration underestimates enterprise-wide exposure and recovery impact.
Question 110
An executive committee wants monthly risk dashboards, but the available report counts blocked phishing messages as proof that material risk fell. What should the security manager recommend as the MOST appropriate response to the current requirement?
- Measure residual exposure, treatment outcomes and risk indicators against business objectives, not activity counts alone.
- Declare lower enterprise risk whenever the spam filter blocks more messages.
- Trigger the defined risk governance escalation and remediation response.
- Seek additional treatment or a formally authorized risk decision before accepting residual exposure.
Explanation
Correct Answer
A:Activity volume is not equivalent to reduced likelihood or business impact. This directly addresses the stated situation.
Incorrect Answers
B:More detections may reflect higher attack volume rather than improved residual risk. The proposal would not be defensible for this case.
C:This is appropriate for a later condition (The security team observes its key risk indicator crossing the agreed escalation threshold.), but it does not directly resolve the initial need. Threshold-based escalation turns monitoring evidence into owned action.
D:This response addresses a different condition: A healthcare cloud migration has significant residual availability risk that exceeds approved tolerance despite proposed controls. The present case requires the measure described by Measure residual exposure, treatment outcomes and risk indicators against business objectives, not activity counts alone.