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Module 5 · Cloud, IaC, Secrets, Cost · Recap
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DR: multi-region active-passive
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📝 **Question:** How do you know DR will work? 📋 Pick the right answer. 💡 **Hint:** Re-read the theory above if unsure.
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Question
📝 **Question:** How do you know DR will work? 📋 Pick the right answer. 💡 **Hint:** Re-read the theory above if unsure.
A
Trust the runbook — if the steps were reviewed by two senior SREs, the document itself is the proof of operational readiness.
B
Quarterly drill — actually fail over to region B, serve traffic, measure RTO/RPO. Untested DR is hope.
C
An annual tabletop exercise — walking through the runbook on paper once a year catches procedural gaps without risking real prod outages.
D
Lean on the cloud provider's managed DR — AWS Backup and GCP cross-region replication ship validated failover semantics out of the box.
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