Explanation
= The method of operation used by the attacker is the most useful information for an information security manager when conducting a post-incident review of an attack. This information can help identify the root cause of the incident, the vulnerabilities exploited, the impact and severity of the attack, and the effectiveness of the existing security controls. The method of operation can also provide insights into the attacker's motives, skills, and resources, which can help improve the organization's threat intelligence and risk assessment. The cost of the attack to the organization, the location of the attacker, and the details from IDS logs are all relevant information for a post-incident review, but they are not as useful as the method of operation for improving the incident handling process and preventing future attacks. References = CISM Review Manual 2022, page
316; CISM Item Development Guide 2022, page 9; ISACA CISM: PRIMARY goal of a post-incident review should be to?

The criticality to business should always drive the decision. Regulatory requirements could be more flexible than business needs. The financial value of an asset could not correspond to its business value. While a consideration, IT resource availability is not a primary factor.

Explanation
The best way to facilitate the effective execution of an incident response plan is to ensure that the response team is trained on the plan. An incident response plan is a set of instructions that defines the roles, responsibilities, procedures, and tools for detecting, responding to, and recovering from security incidents. An incident response team is a group of individuals that are assigned to perform specific tasks and activities during an incident response process. The response team may include security analysts, IT staff, legal counsel, public relations, and other stakeholders. To execute an incident response plan effectively, the response team needs to be trained on the plan, which means they need to be familiar with the following aspects of the plan:
The scope and objectives of the plan The roles and responsibilities of each team member The communication and escalation protocols The incident classification and prioritization criteria The incident response procedures and tools The incident documentation and reporting requirements The incident review and improvement processes By training the response team on the plan, the organization can ensure that the team members are prepared and confident to handle any security incidents that may occur, and that they can perform their tasks efficiently and consistently. The other options are not the best way to facilitate the effective execution of an incident response plan, although they may be some steps or outcomes of the process. The plan being based on risk assessment results is a desirable practice, as it ensures that the plan is aligned with the organization's risk profile and addresses the most relevant and likely threats and vulnerabilities. However, it does not guarantee that the plan will be executed effectively unless the response team is trained on the plan. The plan being based on industry best practice is a desirable practice, as it ensures that the plan follows established standards and guidelines for incident response. However, it does not guarantee that the plan will be executed effectively unless the response team is trained on the plan. The incident response plan aligning with the IT disaster recovery plan (DRP) is a desirable practice, as it ensures that the plans are consistent and coordinated in terms of objectives, scope, roles, procedures, and tools. However, it does not guarantee that the plan will be executed effectively unless the response team is trained on the plan