重大なビジネス影響が発生する前に組織が IT サービスが利用できない状態を許容できる最長時間を定義する用語は次のどれですか。
正解:A
Comprehensive and Detailed In-Depth Explanation:Maximum Tolerable Outage (MTO) (A) defines the longest time an organization can tolerate an IT service being unavailable before significant business impact occurs. It determines business continuity planning and disaster recovery strategies. Other options: * RPO (B) defines acceptable data loss but does not determine the total outage limit. * SDO (C) is related to service agreements but does not set the risk threshold. * AIW (D) is similar to MTO but is not as commonly used in disaster recovery planning. Reference: ISACA CISA Review Manual, Information Systems Operations and Business Resilience