Reviewing configuration settings is the best way for an organization to ensure that servers are compliant to security policy, because it helps to check and verify that the servers are configured and maintained according to the established security standards and guidelines, and that any deviations or violations are identified and corrected. A configuration setting is a parameter or option that defines the behavior or functionality of a server, such as a system, an application, or a service. A security policy is a document that outlines the security objectives, principles, and rules that the organization and its employees must follow, and the consequences of non-compliance. Reviewing configuration settings is the best way, as it helps to ensure that the servers are secure and compliant, and that any security risks or issues are detected and resolved. Reviewing change logs, server access logs, and anti-malware compliance are all possible ways to ensure that servers are compliant to security policy, but they are not the best way, as they do not provide a comprehensive and consistent view of the configuration settings and their compliance status. References = Risk and Information Systems Control Study Manual, Chapter 5, Section 5.3.2, page 200

Accepting residual risk is the most important responsibility of a risk owner, as it implies that the risk owner is accountable for the risk and its impact on the enterprise's objectives and operations. Residual risk is the risk that remains after the implementation of controls, and it should be aligned with the risk appetite and tolerance of the enterprise. The risk owner is responsible for implementing the risk response strategies and monitoring the risk status and outcomes, as well as for reporting and escalating the risk issues and incidents. Testing control design, establishing business information criteria, and establishing the risk register are not the most important responsibilities of a risk owner, but rather the tasks or activities that the risk owner may perform or delegate as part of the risk management process. References = CRISC Certified in Risk and Information Systems Control - Question218; ISACA Certified in Risk and Information Systems Control (CRISC) Certification Exam Question and Answers, question 218.

The process owner is the stakeholder who is responsible for the business process that will be supported by the new IT solution. The process owner has the best knowledge of the business requirements, objectives, and risks associated with the process. The process owner can provide the most relevant information for analyzing the risk associated with the new IT solution, such as the expected benefits, costs, performance, functionality, security, and compliance of the solution. The process owner can also help to identify and evaluate the potential impact and likelihood of the risk scenarios related to the new IT solution. The other stakeholders may have some information or insights, but they are not as directly involved or affected by the new IT solution as the process owner. References = Risk and Information Systems Control Study Manual, 7th Edition, Chapter 2, Section 2.3.1.1, pp. 58-59.

According to the CRISC Review Manual, conducting a business impact analysis (BIA) is the task that should be completed prior to creating a disaster recovery plan (DRP), because it helps to identify the critical business processes and resources, and their dependencies, that need to be recovered in the event of a disaster. The BIA also helps to determine the recovery time objectives (RTOs) and recovery point objectives (RPOs) for each business process and resource, which are the key inputs for the DRP. The other options are not the tasks that should be completed prior to creating a DRP, as they are part of the DRP itself. Identifying the recovery response team is the task of defining the roles and responsibilities of the personnel involved in the recovery process. Procuring a recovery site is the task of selecting and acquiring an alternative location where the business operations can be resumed. Assigning sensitivity levels to data is the task of classifying the data based on its importance and protection requirements. References = CRISC Review Manual, 7th Edition, Chapter 5, Section 5.2.1, page 237.

* A business continuity plan (BCP) is a document that describes the procedures and actions that an organization will take to ensure the continuity of its critical functions and operations in the event of a disruption or disaster12.
* Testing a business continuity plan is a method of evaluating the effectiveness and readiness of the BCP, and identifying and addressing any gaps or weaknesses in the plan34.
* The most cost-effective way to test a business continuity plan is to conduct a tabletop exercise, which is a type of simulation that involves gathering the key stakeholders and participants of the BCP, and discussing and reviewing the roles, responsibilities, and actions that they will take in response to a hypothetical scenario of a disruption or disaster56.
* A tabletop exercise is the most cost-effective way because it requires minimal resources and time, and can be conducted in a regular meeting room or online platform56.
* A tabletop exercise is also the most cost-effective way because it provides a high-level overview and assessment of the BCP, and can identify and address the major issues or challenges that may arise in the implementation of the plan56.
* The other options are not the most cost-effective ways, but rather possible alternatives or supplements that may have different levels of complexity or cost. For example:
* Conducting interviews with key stakeholders is a way of testing a business continuity plan that involves asking and answering questions about the BCP, and collecting feedback and suggestions from the people who are involved or affected by the plan78. However, this way is not the most cost-effective because it may not cover all the aspects or scenarios of the BCP, and may not facilitate the interaction or collaboration among the stakeholders78.
* Conducting a disaster recovery exercise is a way of testing a business continuity plan that involves activating and executing the BCP in a realistic and controlled environment, and measuring the outcomes and impacts of the plan . However, this way is not the most cost-effective because it requires a lot of resources and time, and may disrupt or interfere with the normal operations of the organization .
* Conducting a full functional exercise is a way of testing a business continuity plan that involves simulating and testing the BCP in a live and dynamic environment, and involving the external entities and stakeholders that are part of the plan . However, this way is not the most cost-effective because it requires the most resources and time, and may pose the highest risk or challenge to the organization . References =
* 1: Business Continuity Plan (BCP) Definition1
* 2: Business Continuity Planning - Ready.gov2
* 3: Testing, testing: how to test your business continuity plan4
* 4: Comprehensive Guide to Business Continuity Testing | Agility5
* 5: How to Conduct a Tabletop Exercise for Business Continuity3
* 6: Tabletop Exercises: A Guide to Success6
* 7: How to Conduct Testing of a Business Continuity Plan7
* 8: Business Continuity Plan Testing: Interviewing Techniques8
* : Disaster Recovery Testing: A Step-by-Step Guide
* : Disaster Recovery Testing Scenarios: A Guide to Success
* : Functional Exercises: A Guide to Success
* : Functional Exercise Toolkit