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Quiz

2908 questions of the kind that actually get asked — in interviews, in architecture review boards, and by the person who has to run the thing at 3 AM. Every answer states the trade-off rather than the slogan, and says when the obvious choice is the wrong one.

All areas2908 Architecture Fundamentals91 Distributed Systems101 Data Architecture90 Cloud Architecture87 Networking86 API & Integration Architecture87 Reliability & Resilience99 Observability92 Performance & Capacity Engineering100 Security Architecture95 Cost Architecture & FinOps102 Business Architecture103 Architecture Communication102 Enterprise Architecture100 Legacy Modernization92 AI-Era Architecture96 Software Architecture & Engineering93 Architecture Patterns94 Architecture Decision-Making101 The Architect's Meta-Skills102 Delivery & Release Engineering103 Platform Engineering & Developer Experience102 Testing & Quality Architecture102 Data Platform Architecture98 Streaming & Real-Time Data103 Data Governance & Semantics91 Frontend & Experience Architecture101 Edge, Mobile & IoT98 Regulatory & Data Protection Architecture99 Assurance, Audit & Model Risk98
Difficulty Any beginner intermediate advanced

4 questions in DR Testing.

  1. DR Testing advanced

    An auditor requires evidence that a four-hour RTO is achievable for a system that has never failed over. Production cannot be risked and the business will not accept an unplanned outage. Sequence the first real disaster-recovery test.

    3 min answer dr testingrtorehearsalevidence
  2. DR Testing advanced

    In January 2017 GitLab lost roughly six hours of database data after an engineer deleted a directory on the wrong host during replication troubleshooting, and then found that several backup and replication mechanisms had silently not been working. What signal would have revealed the broken backups beforehand, and why did nothing report them?

    3 min answer gitlabbackupsrestore testingsilent failure
  3. DR Testing advanced

    Your DR plan is pilot light with a 30-minute RTO. What would you test, and what will the test probably reveal?

    2 min answer drtestingcontrol-plane
  4. DR Testing advanced

    Zoom's daily meeting participants rose from roughly 10 million in December 2019 to about 300 million by April 2020. Your platform has a plausible 10x surge ahead and a disaster-recovery plan last tested by tabletop review two years ago. Sequence the move from tabletop to a genuinely tested recovery capability, without an outage.

    4 min answer zoomdisaster recoverydr testingsurge