Portfolio ↗

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

5 questions in Device Provisioning.

  1. Device Provisioning intermediate

    A consumer device sells 600,000 units in the fourth quarter and most of them are gifts. Roughly how many first-boot provisioning requests per second should the platform be sized for on the morning of 25 December, and what does the number rule out?

    3 min answer provisioningcapacitycertificatesactivation
  2. Device Provisioning advanced Multiple choice

    A fleet of 180000 building controllers all authenticate to the platform with one shared enrolment secret compiled into the firmware. That secret has just appeared in a public teardown writeup. The devices are on cellular links, about 6% are offline at any moment, and a failed credential change means a site visit costing more than the controller. Which migration sequence do you run?

    4 min answer device-provisioningcredential-rotationsecure-elementmigration
  3. Device Provisioning advanced

    A fleet of connected devices needs credentials. What does secure provisioning require, and what is the failure that ends the programme?

    2 min answer atheridentityprovisioningrotation
  4. Device Provisioning advanced

    Design provisioning for devices manufactured in volume and deployed by non-technical installers.

    1 min answer provisioningbootstrapsupply-chainidentity
  5. Device Provisioning intermediate

    Devices are provisioned on a contract manufacturer's line: each unit boots, calls your cloud provisioning service, receives a unique certificate, and is boxed. At 02:00 on a Saturday your provisioning service becomes unreachable from that factory. The line runs three shifts and cannot stop. What happens next, and what should the design have been?

    3 min answer provisioningmanufacturingavailabilitycertificates