CISA-KR 문제 296
Restricting program functionality according to user security profiles is the best control for ensuring appropriate segregation of duties within an accounts payable department. An IS auditor should verify that the access rights and permissions of the accounts payable staff are based on their roles and responsibilities, and that they are not able to perform incompatible or conflicting functions such as creating, approving, or paying invoices. This will help to prevent fraud, errors, or abuse of authority within the accounts payable process. The other options are less effective controls for ensuring segregation of duties, as they may involve audit trails, access restrictions, or user identification. References:
CISA Review Manual (Digital Version), Chapter 6, Section 6.31
CISA Review Questions, Answers & Explanations Database, Question ID 223
CISA-KR 문제 297
The first thing that an IS auditor should recommend when an organization is made aware of a new regulation that is likely to impact IT security requirements is to determine which systems and IT-related processes may be impacted. This is because the impact assessment is a crucial step to understand the scope and magnitude of the changes that the new regulation may entail, as well as the potential risks and gaps that need to be addressed. The impact assessment can help the organization to prioritize and plan the necessary actions and resources to comply with the new regulation in a timely and effective manner12.
Updating security policies based on the new regulation is not the first thing to do, because it requires a clear understanding of the impact and implications of the new regulation, which can only be obtained after conducting an impact assessment. Updating security policies without an impact assessment may result in incomplete, inconsistent, or ineffective policies that may not meet the regulatory requirements or the organizational needs12.
Evaluating how security awareness and training content may be impacted is not the first thing to do, because it is a secondary or supporting activity that depends on the results of the impact assessment and the policy updates. Evaluating security awareness and training content without an impact assessment or policy updates may result in inaccurate, outdated, or irrelevant content that may not reflect the regulatory requirements or the organizational expectations34.
Reviewing the design and effectiveness of existing IT controls is not the first thing to do, because it is a monitoring or assurance activity that follows the implementation of the changes based on the impact assessment and the policy updates. Reviewing IT controls without an impact assessment or policy updates may result in misleading, incomplete, or invalid findings that may not capture the regulatory requirements or the organizational performance
CISA-KR 문제 298
Regular scanning of hard drives is the most effective way to detect installation of unauthorized software packages by employees because it can identify any software that is not approved by the organization and may pose a security risk or violate the software policy. Communicating the policy to employees is important, but it may not prevent or detect unauthorized software installation. Logging of activity on the network can monitor network traffic, but it may not capture all software installation events. Maintaining current antivirus software can protect the system from malicious software, but it may not detect all unauthorized software packages.
References:
ISACA, CISA Review Manual, 27th Edition, 2020, p. 2381
ISACA, CISA Review Questions, Answers & Explanations Database - 12 Month Subscription
CISA-KR 문제 299
Unauthorized changes can be moved into production is the best concern that is addressed by securing production source libraries. Production source libraries contain the source code of programs that are used in the production environment. Securing production source libraries means implementing access controls, change management procedures, and audit trails to prevent unauthorized or improper changes to the source code that could affect the functionality, performance, or security of the production programs. The other options are less relevant concerns that may not be directly addressed by securing production source libraries, but rather by other controls such as program approval, version control, or change testing. References:
CISA Review Manual (Digital Version), Chapter 4, Section 4.2.3.21
CISA Review Questions, Answers & Explanations Database, Question ID 213
CISA-KR 문제 300
The answer C is correct because preventive maintenance is outsourced to multiple vendors without requiring nondisclosure agreements (NDAs) would be of greatest concern to an IS auditor reviewing on-site preventive maintenance for an organization's business-critical server hardware. This is because outsourcing preventive maintenance to multiple vendors without NDAs exposes the organization to the risk of unauthorized access, disclosure, or modification of sensitive data and information stored on the servers. NDAs are legal contracts that bind the vendors to protect the confidentiality and security of the data and information they access or handle during the preventive maintenance. Without NDAs, the vendors may not have any obligation or incentive to safeguard the data and information, and they may misuse, leak, or compromise them for malicious or commercial purposes. This could result in financial losses, reputational damage, legal liabilities, or regulatory penalties for the organization.
The other options are not as concerning as option C. Preventive maintenance costs exceed the business allocated budget (option A) is a financial issue that may affect the profitability or efficiency of the organization, but it does not directly impact the security or availability of the server hardware. Preventive maintenance has not been approved by the information system (option B) is a procedural issue that may indicate a lack of coordination or communication between the IT department and the business units, but it does not necessarily affect the quality or effectiveness of the preventive maintenance. The preventive maintenance schedule is based on mean time between failures (MTBF) parameters (option D) is a technical issue that may influence the frequency or timing of the preventive maintenance, but it does not imply any risk or deficiency in the preventive maintenance itself.
References:
What is a Maintenance Audit?
How to audit your preventative maintenance schedule
5 Step Maintenance Management Program Audit
How do you get effective Preventive Maintenance really?
What is a Planned Preventative Maintenance Audit?
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