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Quiz

2667 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 areas2667 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 Architecture86 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 Architecture88 Streaming & Real-Time Data93 Data Governance & Semantics81 Frontend & Experience Architecture91 Edge, Mobile & IoT88 Regulatory & Data Protection Architecture90 Assurance, Audit & Model Risk88
Difficulty Any beginner intermediate advanced

4 questions in Network Performance.

  1. Network Performance advanced

    A connected-vehicle fleet sends telemetry over unreliable mobile networks with limited bandwidth and intermittent connectivity. What protocol and session characteristics matter, and what is the wrong choice?

    2 min answer atheriotmqttconstrained
  2. Network Performance advanced

    A global SaaS product has a 200 ms p95 API budget. Users in Sydney see 900 ms against a single US-East deployment. The application team says the service responds in 40 ms. Who is right and what do you do?

    2 min answer latencyrttglobalcdn
  3. Network Performance advanced

    A search tier fans every query out to 60 shards and merges the replies. The merged p99 jumps from 40 ms to 240 ms, with a few requests at 440 ms. Shard CPU is flat, no individual shard's p99 moved, and the latency increments are almost exactly 200 ms. What failed?

    3 min answer incasttcpfan-outswitch-buffers
  4. Network Performance advanced

    A short-video platform finds that video startup time, not playback quality, is the strongest predictor of engagement. Which network-level optimisations matter most?

    2 min answer latencystartup-timeprefetchquic