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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

2988 questions.

  1. Reference Architectures intermediate

    An enterprise publishes reference architectures that teams do not follow. What makes a reference architecture get used?

    2 min answer reference-architectureadoptioninstantiationdecisions
  2. Reference Architectures intermediate

    An organisation publishes reference architectures that teams do not follow. What is the failure, and what would work?

    2 min answer chargebeereference-architecturepaved-roadadoption
  3. Reference Architectures intermediate

    Three teams followed the published reference architecture exactly. All three produced the same defect - unbounded retry behaviour against a shared dependency - and two of them caused incidents. The reference architecture is not being ignored. Diagnose.

    3 min answer reference-architecturedefaultsretriesgovernance
  4. Reference Architectures intermediate

    You published a reference architecture. Teams are not following it. What is likely wrong?

    2 min answer eastandardsadoption
  5. Reference Data intermediate

    A reference data set of branch codes is maintained by an operations team. A branch closes in March and its code is retired. In September the code is assigned to a new branch in another city. Six months later finance asks why one branch's historical performance looks impossible. What happens across the estate?

    2 min answer reference-dataidentifiershistoryjoins
  6. Reference Data advanced

    A travel platform's currency, tax and geography reference data changes over time. Bookings must be reproducible years later. What does the reference data architecture need?

    1 min answer reference-dataversioningtemporalreproducibility
  7. Reference Data beginner

    An order total is stored as the integer 1000 alongside a currency code. In USD that is ten dollars. The same integer means one thousand yen in JPY and one dinar in KWD. A report sums the column across currencies and the total looks plausible. Why is this a reference-data problem rather than a bug in the report?

    3 min answer reference datacurrencyminor unitsiso 4217
  8. Reference Data intermediate

    Tax rates change annually and must apply from a specific date. How do you manage that across a dozen systems?

    2 min answer reference-dataversioningeffective-datesdistribution
  9. Reference Data advanced

    Twilio's public Messages API documents a fixed set of message status values, and the initial value depends on how the message was created - accepted when a Messaging Service is used, queued when it is not. Every customer who writes an exhaustive match over that list inherits a dependency on it. What does publishing a code list as part of an API force on its owner, and where would copying that approach be a mistake?

    3 min answer twilioreference-datacode-listsapi-contracts
  10. Reference Models intermediate

    A B2B procurement platform adopts an industry reference model for its catalogue and order domain. When does that help, and when does it become a liability?

    1 min answer reference-modelsmoglixprocurementstandards
  11. Reference Models intermediate Multiple choice

    A team adopts a cloud vendor's reference architecture wholesale to run two containers and a database. The result is a hub-and-spoke network with a firewall appliance and three subscription boundaries. What went wrong?

    2 min answer reference-modelsover-engineeringsimplicitymicrosoft
  12. Reference Models intermediate

    A travel platform is building its third availability-and-pricing integration in two years, each with a different internal shape. An architect proposes a reference model. What should it contain to be useful, and what makes reference models fail in practice?

    2 min answer reference-modelsstandardisationbookingintegration