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Quiz

2988 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 areas2988 Architecture Fundamentals91 Distributed Systems111 Data Architecture100 Cloud Architecture97 Networking96 API & Integration Architecture97 Reliability & Resilience99 Observability92 Performance & Capacity Engineering100 Security Architecture105 Cost Architecture & FinOps102 Business Architecture103 Architecture Communication102 Enterprise Architecture100 Legacy Modernization102 AI-Era Architecture106 Software Architecture & Engineering93 Architecture Patterns94 Architecture Decision-Making101 The Architect's Meta-Skills102 Delivery & Release Engineering103 Platform Engineering & Developer Experience102 Testing & Quality Architecture102 Data Platform Architecture98 Streaming & Real-Time Data103 Data Governance & Semantics91 Frontend & Experience Architecture101 Edge, Mobile & IoT98 Regulatory & Data Protection Architecture99 Assurance, Audit & Model Risk98
Difficulty Any beginner intermediate advanced

4 questions in Sidecar & Ambassador.

  1. Sidecar & Ambassador advanced

    A payments service adds a connection-pooling ambassador beside every pod. After rollout the database's connection count falls from 1800 to 120 and its CPU drops 30%, but p99 time-to-commit rises from 90 ms to 210 ms while p50 is unchanged at 12 ms. The ambassador logs no errors and sits at 8% CPU. Where is the time going, and what do you change first?

    3 min answer ambassadorconnection-poolingqueueingtail-latency
  2. Sidecar & Ambassador intermediate

    A platform is considering a sidecar to provide mTLS, retries and telemetry without changing application code. What does that buy and what does it cost?

    2 min answer chargebeesidecarservice-meshoperations
  3. Sidecar & Ambassador advanced

    A platform moves cross-cutting concerns into a sidecar process alongside every service. What does this solve, and what new problems appear?

    2 min answer sidecarcross-cuttingpolyglotoverhead
  4. Sidecar & Ambassador beginner Multiple choice

    A platform team rolls out sidecar proxies so every service gets mTLS without code changes. A month later an auditor captures traffic and finds one service still sending plaintext credentials to an external payments SaaS. The sidecar is running and healthy. Why is that traffic not encrypted by the mesh?

    3 min answer sidecarmtlsservice meshtrust boundaries