The most important thing for an IS auditor to confirm when reviewing an organization's plans to implement robotic process automation (RPA) to automate routine business tasks is that the end-to-end process is understood and documented. This is because RPA involves the use of software robots or digital workers to mimic human actions and execute predefined rules and workflows. Therefore, it is essential that the IS auditor verifies that the organization has a clear and accurate understanding of the current state of the process, the desired state of the process, the inputs and outputs, the exceptions and errors, the roles and responsibilities, and the performance measures12. Without a properdocumentation of the end-to-end process, the organizationmay face challenges in designing, developing, testing, deploying, and monitoring the RPA solution3. References: 1: CISA ReviewManual (Digital Version), Chapter 4: Information Systems Operations and Business Resilience, Section 4.2: IT Service Delivery and Support, page 211 2:CISA Online Review Course, Module 4: Information Systems Operations and Business Resilience, Lesson 4.2: IT Service Delivery and Support 3: ISACA Journal Volume 5, 2019, Article: Robotic Process Automation: Benefits, Risks and Controls

Operating system parameters are settings or values that affect the behavior or performance of the operating system1. Modifications to the operating system parameters may be necessary to improve the system functionality, security, or efficiency. However, such modifications may also introduce risks or errors that can affect the system stability, compatibility, or integrity. Therefore, modifications to the operating system parameters should be authorized and documented by the appropriate authority2.
A change control log is a record of all changes made to the system, including the date, time, description, reason, authorization, and impact of each change3. A change control log can help the IS auditor to verify whether modifications to the operating system parameters were authorized by comparing the log entries with the actual system settings and the change approval documents4.

The correct answer is C. Remediation and retesting.
ISACA guidance explains that penetration testing identifies exploitable weaknesses and provides guidance to address them. Once findings are identified, the next logical and control-appropriate step is to remediate the weaknesses and then retest to confirm they have been effectively resolved.
Option A is not the best next step because vulnerability scanning may supplement testing, but after a completed penetration test with findings, the priority is to fix what was found and verify closure.
Option B may be part of root cause work, but it is not the primary next step.
Option D is important from an information-handling perspective, but it does not address the control weaknesses identified by the test.
Therefore, the correct answer is C, because findings from a penetration test should drive remediation followed by retesting to validate that the identified weaknesses have been corrected.
References (Official ISACA):
ISACA, The Future of Cybersecurity Assessments Is Here - VAPT identifies weaknesses and provides guidance to address them.
ISACA, Taking a Risk-Based Approach to Pen Testing - findings should be evaluated and acted on according to business impact.
ISACA, Smarter Testing Equals Safer Digital Experiences - findings should be assessed for exploitability and impact, supporting focused remediation.

The correct answer is C. Hash values.
Hash values are the best way to establish that digital evidence remains unchanged. A hash is a fixed value mathematically generated from data. If even a small change is made to the evidence, the hash value changes.
Therefore, comparing the hash value calculated when evidence was collected with the hash value calculated later helps prove whether the evidence is still in its original form.
ISACA's glossary defines hashing as a cryptographic process that converts input data into a fixed-length hash value, ensuring data integrity and authentication. This directly supports the use of hash values to verify that digital evidence has not been altered.
Option A is not the best answer because imaging creates a forensic copy of the media, but the image still needs to be validated using hash values. Option B helps prevent accidental or intentional modification during examination, but it does not by itself prove the evidence is unchanged. Option D is important because chain of custody documents who handled evidence, when, and how it was protected. However, chain of custody is a procedural control; hash values provide the stronger technical proof of integrity. ISACA defines chain of custody as the evidence-handling process needed to maintain evidence validity and integrity, including documentation of who had access to the evidence and when.
This question maps mainly to Information Systems Auditing Process because it concerns audit evidence reliability, digital evidence handling, and support for audit conclusions. ISACA's CISA Exam Content Outline includes audit evidence collection techniques and reporting under Domain 1.
References: ISACA CISA Exam Content Outline, Domain 1; ISACA Interactive Glossary, "Hashing" and
"Chain of custody."

Carbon dioxide fire suppression systems need to be combined with an automatic switch to shut down the electricity supply in the event of activation. This is because carbon dioxide displaces oxygen in the air and can create a suffocation hazard for people in the protected area. Therefore, it is essential to cut off the power source before releasing carbon dioxide to avoid electrical shocks and sparks that could ignite the fire again.
Carbon dioxide systems are typically used for total flooding applications in spaces that are not habitable, such as server rooms or data centers.