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

3 questions in Routing & BGP.

Quiz

A global edge network announces the same IP addresses from hundreds of locations. How does traffic reach the right one, what happens when a location fails, and what does this make harder?

A user in Lagos reaches your anycast address at your Frankfurt location while a nearer location in Johannesburg sits idle. Nothing is broken and no configuration has changed. Which explanation is correct?

An edge network announces one anycast prefix from 40 locations. At one of them, the upstream transit begins dropping 8% of packets. BGP sessions stay established, the location's local health endpoint returns 200, and CPU is normal. What do users mapped there experience, and what stops it?