は不正解です。プロセス改善計画は、スコープの変更に関係なく、プロジェクトのプロセスを改善することを目的としています。 回答: B は不正解です。スコープの変更が追加されても、ベンダー選択プロセスは変更されない可能性があります。プロジェクトのベンダーは変更される可能性がありますが、選択プロセスは変更されません。 回答: A は不正解です。スコープの追加によって、利害関係者の特定プロセスは変更されません。利害関係者の数は変わる可能性がありますが、利害関係者の特定方法はスコープの追加によって影響を受けません。

To make well-informed cybersecurity risk decisions, it is most important to determine and understand the risk rating of scenarios. A risk rating is a measure of the severity and priority of a risk, based on the combination of its impact and likelihood. A risk scenario is a description of a potential event or situation that could adversely affect the organization's objectives, assets, or processes. By determining and understanding the risk rating of scenarios, the organization can identify the most critical and urgent risks, and select the appropriate risk response strategies accordingly. The other options are not as important as determining and understanding the risk rating of scenarios, because they do not provide a clear and comprehensive view of the risk, but rather focus on specific or partial aspects of the risk management process. References = Risk and Information Systems Control Study Manual, Chapter 2, Section 2.3.1, page 45.

The interdependency of information systems means that the failure or disruption of one system can affect the performance or availability of other systems. Therefore, it is important to aggregate the results from multiple risk assessments on interdependent information systems to understand the overall impact to the organization.
By aggregating the results, the risk manager can identify the potential cascading effects, the cumulative consequences, and the worst-case scenarios of interdependent risks. This can help the organization to prioritize the risks, allocate the resources, and implement the risk response strategies accordingly. The other options are not as important as the overall impact to the organization, because they do not capture the full extent of the interdependency of information systems. References = Risk and Information Systems Control Study Manual, Chapter 3, Section 3.4.3, page 99.