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Quiz

2627 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 areas2627 Architecture Fundamentals81 Distributed Systems101 Data Architecture90 Cloud Architecture77 Networking86 API & Integration Architecture78 Reliability & Resilience88 Observability81 Performance & Capacity Engineering90 Security Architecture85 Cost Architecture & FinOps82 Business Architecture93 Architecture Communication91 Enterprise Architecture91 Legacy Modernization82 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.

  1. DNS advanced

    Your DR plan assumes a 60-second DNS TTL gives 60-second failover. Traffic to the failed region continues for 20 minutes. Explain and design something better.

    2 min answer dnsfailoverttlanycast
  2. Firewalls & Security Groups advanced

    An attacker compromises one container in your cluster. What should your network controls prevent, and what can they not help with?

    2 min answer securitysegmentationzero-trustlateral-movement
  3. Firewalls & Security Groups intermediate

    An auditor asks you to prove the reporting service cannot reach the payments database. What evidence would you produce, and why is a screenshot of the security group not it?

    3 min answer reachabilityauditflow-logssecurity-groups
  4. Firewalls & Security Groups intermediate

    An enterprise platform has accumulated thousands of network security rules over years, and nobody can determine whether a given rule is still needed. What is the diagnosis and what would you change?

    2 min answer network-securitysecurity-groupspolicyleast-privilege
  5. Firewalls & Security Groups intermediate

    Automated traffic is 60% of your requests, distorting analytics and consuming capacity. Where do you handle it and how?

    2 min answer cloudflarebotsedgecapacity
  6. Firewalls & Security Groups advanced

    Security requires default-deny egress across the estate. Engineering says it will cause constant outages. How do you deliver it?

    2 min answer egresszero-trustflow-logssecurity
  7. gRPC Transport intermediate

    A file-sync company moves internal service communication from JSON over HTTP to gRPC. What improves, what gets harder, and where would you keep HTTP/JSON?

    2 min answer grpcprotobufinternal-apisstreaming
  8. gRPC Transport advanced Multiple choice

    A gRPC service sits behind a layer 4 load balancer. One backend receives most of the traffic and adding instances does not help. Why?

    2 min answer grpchttp2load-balancingmultiplexing
  9. gRPC Transport intermediate

    A telemetry platform must choose between HTTP/JSON and gRPC for high-volume ingestion from thousands of agents. What actually decides it?

    1 min answer grafanagrpcingestionprotocols
  10. gRPC Transport intermediate

    An organisation standardises internal service communication. What actually distinguishes gRPC from JSON over HTTP at scale, and where does each break down?

    2 min answer grpcrestprotobufstreaming
  11. HTTP/1.1, HTTP/2 & HTTP/3 intermediate

    A platform is considering moving customer traffic to HTTP/3. What does it actually improve, for whom, and what does it complicate?

    2 min answer vercelhttp3quicmobile
  12. HTTP/1.1, HTTP/2 & HTTP/3 intermediate Multiple choice

    A team upgrades to HTTP/3 and median page load time is unchanged. Was the upgrade worthless?

    2 min answer http3quictail-latencymeasurement