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The answer B is correct because a system-generated list of staff and their project assignments, roles, and responsibilities is the most useful to an IS auditor performing a review of access controls for a document management system. A document management system is a software that helps organizations store, manage, and share documents electronically. Access controls are the mechanisms that restrict or allow access to the documents based on predefined criteria, such as user identity, role, or project. An IS auditor needs to verify that the access controls are properly configured and implemented to ensure the security, confidentiality, and integrity of the documents.

A system-generated list of staff and their project assignments, roles, and responsibilities can help the IS auditor to perform the following tasks:

Identify the users who have access to the document management system and their level of access (e.g., read-only, edit, delete, etc.).

Compare the actual access rights of the users with their expected or authorized access rights based on their roles and responsibilities.

Detect any anomalies, discrepancies, or violations in the access rights of the users, such as excessive or unauthorized access, segregation of duties conflicts, or dormant or inactive accounts.

Evaluate the effectiveness and efficiency of the access control policies and procedures, such as user provisioning, deprovisioning, authentication, authorization, auditing, etc.

The other options are not as useful as option B. Policies and procedures for managing documents provided by department heads (option A) are not reliable sources of information for an IS auditor because they may not reflect the actual practices or compliance status of the document management system. Previous audit reports related to other departments’ use of the same system (option C) are not relevant for an IS auditor because they may not address the specific issues or risks associated with the current department’s use of the document management system. Information provided by the audit team lead on the authentication systems used by the department (option D) is not sufficient for an IS auditor because authentication is only one aspect of access control and it does not provide information on the authorization or auditing of the document access.

References:

Overview of document management in SharePoint

Setting Up a Document Control System: 6 Basic Steps

Access Control Management: Purpose, Types, Tools, & Benefits

9 Best Document Management Systems of 2023

The best indication to an IS auditor that management’s post-implementation review was effective is that lessons learned were documented and applied, as this shows that the management has identified and addressed the issues and gaps that arose during the implementation, and has improved the processes and practices for future projects. Business and IT stakeholders participating in the post-implementation review is a good practice, but it does not guarantee that the review was effective or that the outcomes were implemented. Post-implementation review being a formal phase in the system development life cycle (SDLC) is a requirement, but it does not ensure that the review was effective or that the outcomes were implemented. Internal audit follow-up being completed without any findings is a desirable result, but it does not indicate that the management’s post-implementation review was effective or that the outcomes were implemented. References: CISA Review Manual (Digital Version), Chapter 3: Information Systems Acquisition, Development and Implementation, Section 3.2: Project Management Practices1

The concept of materiality is most important for an IS auditor to apply when planning an audit engagement, because it helps the auditor to determine the scope, objectives, procedures and resources of the audit. Materiality is the degree to which an omission or misstatement of information could affect the users’ decisions or the achievement of the audit objectives. By applying the concept of materiality, the auditor can focus on the most significant and relevant areas of the audit and avoid wasting time and effort on trivial or immaterial matters. The other options are not as important as planning an audit engagement, because they are either based on or affected by the materiality assessment done during the planning phase. References:

ISACA, CISA Review Manual, 27th Edition, chapter 1, section 1.31

ISACA, IT Audit and Assurance Standards, Guidelines and Tools and Techniques for IS Audit and Assurance Professionals, section 12022

 The organization is primarily responsible for the security configurations of the deployed application’s operating system when migrating its HR application to an Infrastructure as a Service (IaaS) model in a private cloud. This is because in an IaaS model, the cloud provider is responsible for the security of the underlying infrastructure that they lease to their customers, such as servers, storage, and networks, while the customer is responsible for the security of the areas of the cloud infrastructure over which they have control, such as operating systems, middleware, and applications. Therefore, the organization needs to ensure that the operating system is properly configured, patched, hardened, and monitored to protect the HR application from unauthorized access or malicious attacks.

The other options are not primarily responsible for the security configurations of the deployed application’s operating system. The cloud provider’s external auditor is not responsible for any security configurations, but rather for verifying and reporting on the cloud provider’s compliance with relevant standards and regulations. The cloud provider is responsible for the security of the underlying infrastructure, but not for the operating system or any software installed on it by the customer. The operating system vendor is responsible for providing updates and patches for the operating system, but not for configuring or securing it according to the customer’s needs.

References:

11: What Is IaaS (Infrastructure As A Service)? - Forbes

12: What is Shared Responsibility Model? - Check Point Software

13: Who Is Responsible for Cloud Security? - Security Intelligence