CISA-KR 문제 16
The audit charter is a document that defines the purpose, scope, authority, and responsibility of an IT audit organization. The audit charter should specify roles and responsibilities within an IT audit organization, such as who is accountable for approving the audit plan, who is responsible for conducting the audits, who is authorized to access the audit evidence, and who is accountable for reporting the audit results. The organizational chart, the engagement letter, and the annual audit plan are also important documents for an IT audit organization, but they do not specify roles and responsibilities as clearly and comprehensively as the audit charter.
CISA-KR 문제 17
According to the ISACA's Information Security Governance Guidance for Boards of Directors and Executive Management, the highest level of maturity of an information security program is Level 5: Optimized, which means that the program is aligned with the business objectives and strategy, and continuously monitors and improves its performance and effectiveness. A framework is in place to measure risks and track effectiveness, and the program is proactive, adaptive, and innovative.
The other options represent lower levels of maturity:
A training program is in place to promote information security awareness. This is Level 2: Repeatable, which means that the program has some basic policies and procedures, and provides awareness training to employees.
Information security policies and procedures are established. This is Level 3: Defined, which means that the program has formalized policies and procedures, and assigns roles and responsibilities for information security.
The program meets regulatory and compliance requirements. This is Level 4: Managed, which means that the program has established metrics and reporting mechanisms, and complies with relevant laws and regulations.
References: : ISACA. (2001). Information Security Governance Guidance for B
CISA-KR 문제 18
A preventive control is a control that aims to deter or prevent undesirable events from occurring. A fingerprint-based access control system for the building is an example of a preventive control for physical access, as it restricts unauthorized persons from entering the premises. Keeping log entries for all visitors to the building, installing CCTV cameras for all ingress and egress points, and implementing a centralized logging server to record instances of staff logging into workstations are examples of detective controls, which are controls that aim to discover or detect undesirable events that have already occurred.
References: IS Audit and Assurance Tools and Techniques, CISA Certification | Certified Information Systems Auditor | ISACA
CISA-KR 문제 19
A computer-assisted technique is the most helpful method for an IS auditor to determine whether duplicate vendor payments exist on a complex system with a high volume of transactions. A computer-assisted technique is a tool or procedure that can be used to perform audit tests or procedures on data stored in electronic form.
Examples of computer-assisted techniques include data analysis software, query tools, scripting languages, and specialized audit software. A computer-assisted technique can help an IS auditor to identify and extract duplicate payments from a large data set, perform calculations and comparisons, and generate reports and summaries. A computer-assisted technique can also provide more accuracy, efficiency, and coverage than manual methods.
Stratified sampling, statistical sampling, and process walk-through are not as helpful as a computer-assisted technique for this purpose. Stratified sampling is a sampling method that divides the population into subgroups based on certain characteristics and selects samples from each subgroup. Statistical sampling is a sampling method that uses probability theory to determine the sample size and selection criteria. Process walk-through is a review technique that involves following a transaction or process from start to finish and observing the inputs, outputs, controls, and documentation. These methods may be useful for other audit objectives, but they are not as effective as a computer-assisted technique for detecting duplicate payments in a complex and high-volume system. References: ISACA Frameworks: Blueprints for Success, [ISACA Glossary of Terms]
CISA-KR 문제 20
This is the most helpful method for measuring benefits realization for a new system, because it involves evaluating the actual outcomes and impacts of the system after it has been implemented and used for a certain period of time. A post-implementation review can compare the actual benefits with the expected benefits that were defined in the business case or the benefits realization plan, and identify any gaps, issues, or opportunities for improvement. A post-implementation review can also assess the effectiveness, efficiency, and satisfaction of the system's users, stakeholders, and customers, and provide feedback and recommendations for future enhancements or changes.
The other options are not as helpful as post-implementation review for measuring benefits realization for a new system:
Function point analysis. This is a technique that measures the size and complexity of a software system based on the number and types of functions it provides. Function point analysis can help estimate the cost, effort, and time required to develop, maintain, or enhance a software system, but it does not measure the actual benefits or value that the system delivers to the organization or its users.
Balanced scorecard review. This is a strategic management tool that measures the performance of an organization or a business unit based on four perspectives: financial, customer, internal process, and learning and growth. A balanced scorecard review can help align the organization's vision, mission, and goals with its activities and outcomes, but it does not measure the specific benefits or impacts of a new system.
Business impact analysis (BIA). This is a process that identifies and evaluates the potential effects of a disruption or disaster on the organization's critical business functions and processes. A BIA can help determine the recovery priorities, objectives, and strategies for the organization in case of an emergency, but it does not measure the benefits or value of a new system.
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