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Quiz

2707 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 areas2707 Architecture Fundamentals81 Distributed Systems101 Data Architecture90 Cloud Architecture87 Networking86 API & Integration Architecture78 Reliability & Resilience88 Observability81 Performance & Capacity Engineering90 Security Architecture95 Cost Architecture & FinOps92 Business Architecture93 Architecture Communication91 Enterprise Architecture91 Legacy Modernization92 AI-Era Architecture96 Software Architecture & Engineering84 Architecture Patterns84 Architecture Decision-Making91 The Architect's Meta-Skills92 Delivery & Release Engineering93 Platform Engineering & Developer Experience92 Testing & Quality Architecture90 Data Platform Architecture98 Streaming & Real-Time Data93 Data Governance & Semantics91 Frontend & Experience Architecture91 Edge, Mobile & IoT88 Regulatory & Data Protection Architecture90 Assurance, Audit & Model Risk98
Difficulty Any beginner intermediate advanced

5 questions in OTA Updates.

  1. OTA Updates advanced

    A connected-vehicle fleet needs over-the-air firmware updates. What must the architecture guarantee, and why is this unlike a server deployment?

    2 min answer atherotafirmwarerollback
  2. OTA Updates advanced

    A firmware update bricked 4% of a deployed fleet. Each recovery requires a site visit. What went wrong and what prevents recurrence?

    2 min answer iotdeploymentresilience
  3. OTA Updates advanced

    A staged over-the-air rollout reaches 100% over two weeks. What happens to the 12% of devices that were offline for the whole window and come back three weeks later on the old firmware?

    3 min answer otaversion-skewdesired-statefleet
  4. OTA Updates advanced

    An OTA firmware update has bricked 3% of a 50,000-device fleet. What do you do, and what should have prevented it?

    1 min answer iototaincidentrollout
  5. OTA Updates advanced

    Design over-the-air updates for devices where a failed update means a physical service visit.

    2 min answer otaupdatesrollbackstaged-rollout
The practice set

2707 interview questions, 5782 flashcards, 2225 glossary entries and 55 worked deliverables across 30 areas of the solution architecture curriculum. Free, no sign-up, no paywall.

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