Certified Information Systems Security Professional (CISSP) Practice Exam

The primary focus of a Business Impact Analysis (BIA) is to document and assess business functions and their potential impacts in the event of a disruption. A BIA helps organizations understand the criticality of different business processes, identify dependencies, and determine the effects of interruptions on operations, finances, and reputation. This analysis informs decision-making regarding risk management and resource allocation, ultimately aiding in the development of effective business continuity plans.

In this context, while other options touch on important aspects of business readiness and cybersecurity, they do not align with the core objective of a BIA. Designing effective breach notifications pertains more to incident response and communication strategies rather than analyzing business processes. Establishing the best cybersecurity controls focuses on protective measures rather than the impact of business function disruptions. Defining what a botnet is relates to cybersecurity threats and is not relevant to the assessment of business functions. Thus, documenting and assessing business functions stands out as the correct emphasis of a Business Impact Analysis.