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Question 163:
Answer: C. Reviewing the last compile date of production programs
Reason:

• In an environment that logs all program changes, unauthorized modifications to production code are likely to trigger a new compilation. The most efficient automatic indicator of such changes is the last compile date/time, which can reveal tampering quickly.

• Periodically running and reviewing test data against production programs checks data integrity, not code changes, so it may miss code tampering.
• Verifying user management approval of modifications is preventive, not detectively efficient for post-change detection.
• Manually comparing code in production programs to controlled copies is labor-intensive and error-prone; not scalable in a live environment.

Question 105:

• Answer: B. Reconciliation of total amounts by project.

• When data are entered from Spreadsheets into the job-costing system, reconciling the total amounts by project verifies that the sum of line items matches the reported total in the system. This cross-check catches transcription errors or miskeyed totals and confirms data integrity across the data entry boundary.

• A) Display back of project detail after entry helps verification, but does not ensure that the overall totals reconcile with the source data.
• C) Reasonableness checks for each cost type can catch implausible values but may miss errors where all values are individually plausible.
• D) Validity checks preventing character data stop non-numeric entries but do not ensure the entered totals align with the source spreadsheet.

• This is a cross-check control aimed at ensuring data integrity during manual data transfer from spreadsheets to an accounting/cost system.

Question 88:
For question 88, the correct answer is C: An evaluation of the configuration management practices.
Why:

• Security certification aims to ensure the system’s security controls are properly designed and implemented. Evaluating Configuration Management (CM) practices before go-live ensures there are formal processes for baselines, approved changes, version control, and change tracking. This reduces the risk of deploying insecure or unstable configurations.
• The other options are less appropriate pre-implementation:

• CM evaluation is a key pre-implementation control to support secure system deployment.
• Certification focuses on ensuring security controls are in place and verifiable before use.

Question 75:

• Correct answer: B: Consideration of risks

• Why: In IS auditing, audit objectives are derived from the organization’s risk landscape. A risk-based approach ensures objectives address the most significant threats to achieving business and information security goals, focusing testing and controls on high-risk areas.

• How it contrasts with the other options:

• Practical note: Start with risk assessment to identify high-impact, high-likelihood risks, then define objectives to test controls and mitigation for those risks.

Question 71:

• Correct answer: B: firewall standards

• Why: The first step is to review the organization's documented firewall standards. These standards establish the security baselines, rules, segmentation, and required controls that all firewalls must follow. Without current, approved standards, assessing the security architecture is premature because you won’t know what controls are actually required or tolerated.

• After confirming standards, you would then evaluate against them by checking:

• Why the other options aren’t the first step:

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Question 40:
The correct options are Threat detection (B) and Data protection (C).

• Threat detection: Regulatory compliance often requires monitoring and detecting security threats. Having threat detection capabilities supports incident response, auditing, and risk management that compliance frameworks mandate.

• Data protection: Compliance heavily focuses on protecting sensitive data (encryption, access controls, data handling, and auditing). Data protection directly demonstrates adherence to privacy and security requirements.

Question 248:

• Correct answer: SOAR

• Why: A SOAR (Security Orchestration, Automation, and Response) platform is built to pull together alerts from multiple tools (like IDS, firewalls, and DLP), run automated playbooks, and coordinate responses across the environment. This directly reduces mean time to detect and respond.

• How it differs from the other options:

• Quick example: On an IDS alert of a potential breach, the SOAR workflow could automatically validate the alert, block offending IP, isolate the host, and open a ticket with a runbook for containment and forensics.

Question 245:

• Correct answer: D.

• Explanation:

• Key concept: Replacing ECC with lattice-based crypto is about ensuring security against quantum adversaries and future-proofing cryptographic agility, not about traditional classical performance or other features.

Question 211:

• Answer: C — The codebase lacks traceability to functional and non-functional requirements.

• Why this supports formal methods: Formal methods use rigorous, mathematically-based verification to prove that software meets its specified goals. If the codebase cannot be traced back to its functional and non-functional requirements, there’s no solid ground to apply formal proofs or verification. Traceability ensures each component, requirement, and test can be linked and verified, which is essential for formal verification efforts in safety-critical avionics.

• Why the other options are less direct:

• Takeaway: In safety-critical systems, aligning code with explicit requirements via traceability is a prerequisite for applying formal methods effectively. This helps establish verifiable correctness and safety properties.