Comprehensive and Detailed Step-by-Step Explanation:
Incident response policies must provide clear and actionable steps to ensure effective handling of incidents.
Notification requirements are critical to ensure timely communication with stakeholders during an incident.
A). A description of testing methodology: While testing is important, it is typically addressed in incident response plans, not the policy itself.
B). Notification requirements: This is the BEST answer as it ensures that key stakeholders are informed promptly, allowing for coordination and mitigation efforts.
C). An infrastructure diagram: This is useful for understanding system architecture but is not a core policy requirement.
D). Recovery time objectives (RTOs): RTOs are part of business continuity and disaster recovery plans, not incident response policies.
Reference: CISM Job Practice Area 4 (Information Security Incident Management) emphasizes the importance of clear communication and notification procedures in incident response.