The primary reason for an IS auditor to use data analytics techniques is to reduce detection risk. Detection risk is the risk that an IS auditor will fail to detect material errors or irregularities in the information systems environment. By using data analytics techniques, such as data extraction, analysis, visualization, and reporting, an IS auditor can enhance the audit scope, coverage, efficiency, and effectiveness. Data analytics techniques can help an IS auditor to identify anomalies, patterns, trends, correlations, and outliers in large volumes of data that may indicate potential issues or risks. Technology risk, control risk, and inherent risk are types of audit risk that are not directly affected by the use of data analytics techniques by an IS auditor. References: [ISACA Journal Article: Data Analytics for Auditors]

The correct answer is D. Sign off on the audit scope because the audit scope defines what will and will not be included in the engagement. Before an IS audit project begins, senior audit leadership must ensure that the scope is appropriate, risk-based, aligned with audit objectives, and properly authorized. ISACA states that audit scope should define the audit subject and the limits of the audit, including the organization, process, application, technology, period under review, and expected breadth of work.
Option A is not correct because senior audit leadership does not have to attend planning walkthroughs.
Walkthroughs are normally performed by the audit team to understand processes and controls.
Option B is not the best answer because meeting auditee leadership may be useful, especially during audit planning or kickoff, but it is not always mandatory for senior audit leadership before every audit project.
Option C is not the best answer because reviewing audit planning documents is important, but the required senior-level control is formal approval or signoff of the audit scope. Review alone does not necessarily confirm authorization.
ISACA audit guidance emphasizes that the audit's scope and objective must be clearly understood before the audit plan is created, and that the plan should incorporate the scope, purpose, procedures for obtaining evidence, and support for audit conclusions. This question maps mainly to Information Systems Auditing Process, because ISACA's CISA Exam Content Outline includes audit planning, audit project management, evidence collection, reporting, and communication under Domain 1.
References: ISACA CISA Exam Content Outline, Domain 1; ISACA Journal, The Components of the IT Audit Report; ISACA white paper page, Information Systems Auditing Tools & Techniques

The best indicator of whether a PIR performed by the PMO was effective is whether project outcomes have been realized. Project outcomes are the benefits or value that a project delivers to its stakeholders, such as improved efficiency, quality, customer satisfaction, or revenue. A PIR should evaluate whether project outcomes have been achieved in accordance with project objectives, scope, budget, and schedule. The other options are not as good as project outcomes in determining the effectiveness of a PIR. Lessons learned are valuable inputs for improving future projects, but they do not measure whether project outcomes have been realized. Management approval of the PIR report is a sign of acceptance and support for the PIR findings and recommendations, but it does not reflect whether project outcomes have been achieved. The review performed by an external provider is a way of ensuring objectivity and independence for the PIR, but it does not guarantee whether project outcomes have been realized. References: CISA Review Manual (Digital Version), Chapter 3, Section 3.3

Enterprise Architecture (EA) governance requires proper oversight and separation of duties to ensure strategic alignment and risk management.
Option A (Correct):If IT application owners have sole authority over architecture approval, there is a high risk of inadequate governance, lack of strategic alignment, and potential conflicts of interest. Architecture decisions should involve multiple stakeholders, including business and security teams, to ensure compliance, security, and business alignment.
Option B (Incorrect):While having the CIO chair the architecture review board might not be ideal, it is not thegreatestconcern. The CIO is a senior leader who can provide oversight and direction, even if additional governance mechanisms should be in place.
Option C (Incorrect):Reviewing security requirements within the EA program is abest practice, as it ensures that security is embedded into enterprise architecture rather than treated as an afterthought.
Option D (Incorrect):Enterprise architecture should ideally encompass both IT and business processes.
Governing non-IT-related projects is not inherently problematic, as EA is designed to align business strategy with IT infrastructure.
Reference:ISACA CISA Review Manual -Domain 1: Information Systems Auditing Process- Covers IT governance and EA program structure.

The correct answer is B. To identify material information security vulnerabilities.
The primary purpose of a formal information security audit is to independently evaluate whether security controls are adequate and effective, and to identify material vulnerabilities, weaknesses, or risks that could affect the confidentiality, integrity, and availability of information assets. ISACA states that audit objectives often center on substantiating the existence of internal controls to minimize business risk, and ISACA's cybersecurity audit guidance describes reviewing gathered data to identify potential security vulnerabilities or risk and documenting findings and recommendations.
Option A is important, but it is more directly related to information security governance and strategy than the primary purpose of a formal audit. Option C is not correct because reducing software licensing cost is a cost- management activity, not the main objective of an information security audit. Option D is also incorrect because monitoring security team productivity is a management function, not the primary purpose of an independent audit.
This question maps mainly to Information Systems Auditing Process because it concerns why an audit is conducted: to provide independent assurance, identify material issues, and support risk-based recommendations.
References: ISACA CISA Exam Content Outline, Domain 1; ISACA Interactive Glossary, "Audit objective,"
"Audit evidence," and "Auditor's opinion"; ISACA article, Six Benefits of a Cybersecurity Audit.