ISC Updated CC Exam Questions and Answers by mitchell

IPSec uses sequence numbers in AH and ESP headers to detect and reject duplicate packets. This prevents attackers from capturing and replaying valid packets. Anti-replay protection is a core IPSec security feature defined by the IETF.

Hashing ensuresintegrityby allowing detection of unauthorized changes to data.

Disaster Recovery Planning focuses on restoringIT systems, infrastructure, and communicationsafter a disruption. Business Continuity Planning focuses onmaintaining critical business functionsduring and after incidents, often using alternative processes.

BCP is broader than DRP and includes people, processes, facilities, and third parties, while DRP is IT-centric. Both plans complement each other but serve different purposes.

Anadverse eventis a harmful occurrence that may or may not constitute a security incident or breach.