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Quiz

2777 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 areas2777 Architecture Fundamentals81 Distributed Systems101 Data Architecture90 Cloud Architecture87 Networking86 API & Integration Architecture87 Reliability & Resilience99 Observability92 Performance & Capacity Engineering90 Security Architecture95 Cost Architecture & FinOps92 Business Architecture93 Architecture Communication91 Enterprise Architecture100 Legacy Modernization92 AI-Era Architecture96 Software Architecture & Engineering93 Architecture Patterns84 Architecture Decision-Making91 The Architect's Meta-Skills92 Delivery & Release Engineering93 Platform Engineering & Developer Experience92 Testing & Quality Architecture102 Data Platform Architecture98 Streaming & Real-Time Data93 Data Governance & Semantics91 Frontend & Experience Architecture91 Edge, Mobile & IoT88 Regulatory & Data Protection Architecture99 Assurance, Audit & Model Risk98
Difficulty Any beginner intermediate advanced

1029 questions.

  1. Workflow Schedulers intermediate Multiple choice

    Why is cron insufficient for a pipeline of interdependent data jobs?

    2 min answer orchestrationdependenciesbackfillidempotency
  2. Workload Isolation intermediate

    A data platform's interactive queries become unpredictable whenever a large pipeline runs. What is the fix, and what remains shared?

    2 min answer sharechatisolationcomputeclasses
  3. Workload Isolation intermediate Multiple choice

    A lakehouse platform runs interactive BI on its own compute cluster and pipelines on another, and both are sized comfortably. Every Tuesday and Wednesday queries against the ten largest tables run 3 to 6 times slower on both clusters at once, then recover by Thursday. Table maintenance - compaction and snapshot expiry - is submitted as low-priority work on the pipeline cluster. Which change fixes it?

    3 min answer compactionmaintenanceisolationsmall files
  4. Workload Isolation intermediate

    Every morning at 09:00 executive dashboards are slow. Investigation shows a data scientist's exploratory query. How do you fix this permanently?

    1 min answer isolationperformanceplatform
  5. Written Communication intermediate

    A distributed engineering organisation makes architectural decisions in meetings and repeatedly relitigates them. What practice fixes this?

    2 min answer vercelwritten-culturedecisionsasync
  6. Written Communication intermediate

    On 14 March 2023 Reddit was down for 314 minutes after an upgrade from Kubernetes 1.23 to 1.24 broke how Calico selected its route reflectors. Reddit published a detailed public write-up rather than a short root-cause statement. What did that choice buy them, and where would copying it be a mistake?

    3 min answer redditpostmortemincident-communicationwriting
  7. Written Communication intermediate

    What makes a design document worth reviewing, and what makes reviewers ignore one?

    2 min answer design-docsreviewnon-goalsalternatives
  8. Written Communication intermediate

    Why does written architectural communication outperform meetings in a distributed engineering organisation, and what makes a document worth reading?

    2 min answer writingasyncdocumentsclarity
  9. Zero-Downtime Migration intermediate Multiple choice

    A commerce platform must change a database schema while an older application version is still running. What migration pattern prevents downtime, and what is the common mistake?

    2 min answer myntraschema-migrationexpand-contractdeployment