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Quiz

98 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 areas98 Architecture Fundamentals2 Distributed Systems26 Data Architecture23 Cloud Architecture4 Networking3 API & Integration Architecture1 Reliability & Resilience4 Observability3 Performance & Capacity Engineering3 Security Architecture3 Cost Architecture & FinOps3 Business Architecture2 Architecture Communication2 Enterprise Architecture1 Legacy Modernization2 AI-Era Architecture3 Software Architecture & Engineering3 Architecture Patterns3 Architecture Decision-Making6 The Architect's Meta-Skills1
Difficulty Any beginner intermediate advanced

4 questions in Reliability & Resilience.

  1. Reliability & Resilience intermediate

    A team is launching a new service and asks what its SLO should be. How do you help them decide, and why is "99.99%" usually the wrong first answer?

    2 min answer slosreerror-budgetreliability
  2. Reliability & Resilience advanced

    In July 2019 a single regex deployed globally took Cloudflare's network to 100% CPU within seconds. What does this say about how configuration should be released?

    2 min answer deploymentblast-radiusconfigcase-study
  3. Reliability & Resilience advanced

    Maersk rebuilt roughly 4,000 servers and 45,000 PCs in about ten days after NotPetya in 2017, and recovered its directory only because one data centre had been offline during the attack. What does this say about DR design?

    2 min answer disaster-recoveryransomwarebackupcase-study
  4. Reliability & Resilience intermediate

    The business asks for "100% uptime" for a new customer portal. Walk me through the conversation that ends in an agreed SLO.

    3 min answer slisloslanegotiation