Kubernetes High Availability and Multi Cluster Questions

Design and operate Kubernetes deployments that span multiple clusters and provide high availability and disaster recovery. Topics include multi cluster topologies and trade offs such as active active versus active passive, cross cluster networking and service discovery patterns, global traffic management and DNS failover, backup and restore strategies for stateful workloads, replication and data consistency approaches, cluster lifecycle and upgrade orchestration to achieve zero downtime, security and policy boundaries across clusters, and cross cluster observability and tooling for centralized operations. Interviewers assess architecture choices, failure modes, failover testing, and operational readiness.