Quiz

2908 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 areas2908 Architecture Fundamentals91 Distributed Systems101 Data Architecture90 Cloud Architecture87 Networking86 API & Integration Architecture87 Reliability & Resilience99 Observability92 Performance & Capacity Engineering100 Security Architecture95 Cost Architecture & FinOps102 Business Architecture103 Architecture Communication102 Enterprise Architecture100 Legacy Modernization92 AI-Era Architecture96 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 Key Management.

Quiz

A communication platform adds end-to-end encryption to multi-party meetings. What are the hard problems, and which are cryptographic versus operational?

A crypto exchange must hold customer assets while remaining operationally usable. How should key custody, signing, approval and monitoring be architected?

A pipeline writes 200 million objects a day and the security review requires per-object encryption with a managed key service. Roughly how many calls to that service does the naive design make, what does it cost, and what changes the answer by two orders of magnitude?

In a multi-tenant SaaS, would you use one data encryption key for all tenants or one per tenant? Justify.