Quiz

2777 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 areas2777 Architecture Fundamentals81 Distributed Systems101 Data Architecture90 Cloud Architecture87 Networking86 API & Integration Architecture87 Reliability & Resilience99 Observability92 Performance & Capacity Engineering90 Security Architecture95 Cost Architecture & FinOps92 Business Architecture93 Architecture Communication91 Enterprise Architecture100 Legacy Modernization92 AI-Era Architecture96 Software Architecture & Engineering93 Architecture Patterns84 Architecture Decision-Making91 The Architect's Meta-Skills92 Delivery & Release Engineering93 Platform Engineering & Developer Experience92 Testing & Quality Architecture102 Data Platform Architecture98 Streaming & Real-Time Data93 Data Governance & Semantics91 Frontend & Experience Architecture91 Edge, Mobile & IoT88 Regulatory & Data Protection Architecture99 Assurance, Audit & Model Risk98

Difficulty Any beginner intermediate advanced

2777 questions.

Quiz

You bought a data catalogue eighteen months ago. It is populated and nobody uses it. What went wrong?

A consumer finance platform wants to apply controls proportionate to data sensitivity. How should classification work so it actually drives behaviour?

A data platform labels tables as public internal confidential or restricted in its catalogue. Six months on an auditor finds restricted columns in a dashboard that 400 people can open. Which control would have actually prevented it?

A developer needs to reproduce a bug that only occurs with a specific customer's data. What do you allow?

A platform handles customer addresses, payment details, order history, retailer pricing and shopper location. Why does data classification matter architecturally, and what goes wrong without it?

A support tool shows ` 4242`. A product manager asks to display the full card number for identity verification. The database stores the full number encrypted with a managed key. Which change actually reduces PCI DSS scope?

A data platform introduces data contracts and pipelines still break when producers change schemas. What was missing?

A producer team renames a column. The data contract is defined and the contract test is green. Three hours later four downstream models fail and a board dashboard is blank. The test lived in the consumer's repository and ran on the consumer's schedule. What is the structural defect?

A schema change in one team's service breaks four downstream data consumers overnight. The contract existed. What failed?

GitLab publishes its data quality approach in its open handbook: a Trusted Data Framework of SQL and YAML test cases with PASS or FAIL results, four test types, and tiered data assets. What problem does that shape solve that a schema registry does not, and what does it cost?

You propose data contracts. An application team says "we are not a data team, our database is our own business". How do you respond?

Quiz

You bought a data catalogue eighteen months ago. It is populated and nobody uses it. What went wrong?

A consumer finance platform wants to apply controls proportionate to data sensitivity. How should classification work so it actually drives behaviour?

A data platform labels tables as public internal confidential or restricted in its catalogue. Six months on an auditor finds restricted columns in a dashboard that 400 people can open. Which control would have actually prevented it?

A developer needs to reproduce a bug that only occurs with a specific customer's data. What do you allow?

A platform handles customer addresses, payment details, order history, retailer pricing and shopper location. Why does data classification matter architecturally, and what goes wrong without it?

A support tool shows `**** **** **** 4242`. A product manager asks to display the full card number for identity verification. The database stores the full number encrypted with a managed key. Which change actually reduces PCI DSS scope?

A data platform introduces data contracts and pipelines still break when producers change schemas. What was missing?

A producer team renames a column. The data contract is defined and the contract test is green. Three hours later four downstream models fail and a board dashboard is blank. The test lived in the consumer's repository and ran on the consumer's schedule. What is the structural defect?

A schema change in one team's service breaks four downstream data consumers overnight. The contract existed. What failed?

GitLab publishes its data quality approach in its open handbook: a Trusted Data Framework of SQL and YAML test cases with PASS or FAIL results, four test types, and tiered data assets. What problem does that shape solve that a schema registry does not, and what does it cost?

You propose data contracts. An application team says "we are not a data team, our database is our own business". How do you respond?

A support tool shows ` 4242`. A product manager asks to display the full card number for identity verification. The database stores the full number encrypted with a managed key. Which change actually reduces PCI DSS scope?