N10-009 - Network Operations - Section 3.3
Explain high availability and disaster recovery concepts, including redundancy, failover, backups, and the RPO/RTO recovery metrics.
Explain high-availability designs - first-hop redundancy (FHRP), link aggregation, NIC teaming, and active/active versus active/passive clustering - that eliminate single points of failure. Distinguish the disaster-recovery site types (hot, warm, cold) and the recovery metrics RPO and RTO, and explain how backup strategy and testing satisfy a continuity objective.
High availabilityRedundancy and failoverRPO and RTOHot/warm/cold sites
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