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

86 questions in Networking.

Quiz

Your API gateway configuration has grown to 8,000 lines with request transformations and cross-service orchestration. Changes require a platform team ticket and take two weeks. How do you fix this?

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?

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?

A managed database platform sees connection exhaustion when customers run serverless functions against it. Why does this happen and what is the fix?

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?

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

0.5% of requests time out. It is not correlated with any instance, endpoint, customer or time of day. Where do you look?

A configuration push to thousands of edge locations must complete in under a minute, yet a bad config could take down the whole network. How do you reconcile speed with safety?

A crypto exchange sees intermittent elevated latency to a market-data provider. Servers are healthy, the provider reports no issues, and the problem appears in bursts. How would you diagnose it?

A developer platform receives reports that clones are slow "sometimes, from some places". Server metrics are healthy, error rates are normal, and the team cannot reproduce it. How do you investigate a problem that is invisible from the server side?

A user reports intermittent TLS errors from one region only. Walk through your diagnosis.

After moving a service behind a VPN to an on-premises system, small API calls succeed and large responses hang indefinitely. Walk through the diagnosis.