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Quiz

2948 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 areas2948 Architecture Fundamentals91 Distributed Systems101 Data Architecture90 Cloud Architecture87 Networking96 API & Integration Architecture87 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

5 questions in The Six Rs.

  1. The Six Rs intermediate

    A company must modernise a portfolio of applications. How should each be assigned a modernisation approach, and what is the most common misassignment?

    2 min answer udaansix-rsportfoliorehost
  2. The Six Rs beginner Multiple choice

    A data-centre lease ends in seven months and 900 virtual machines on an on-premises hypervisor cluster have to leave. The portfolio review assigned every one of them "rehost" — rebuild each machine on native cloud instances. The team moves about 25 machines a week. Which disposition fits the constraint?

    3 min answer six-rsrelocaterehostdata-centre-exit
  3. The Six Rs intermediate Multiple choice

    A retailer of the kind Flipkart operates runs payroll on a 19-year-old mainframe application for 60000 employees across three countries. Every April a statutory change absorbs about four months of work from two of the three remaining developers who understand it. The portfolio review must assign a disposition. Which one?

    3 min answer six rsrepurchasepayrollstatutory change
  4. The Six Rs intermediate

    A travel platform must move a portfolio of applications off ageing infrastructure. How should each application be assigned among rehost, replatform, refactor, rebuild, replace and retire?

    2 min answer six-rsportfoliomigration-strategyexpedia
  5. The Six Rs intermediate Multiple choice

    Of the six migration strategies, which is most often skipped and why does that matter?

    1 min answer six-rsretireportfoliorationalisation