Quiz

2667 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 areas2667 Architecture Fundamentals81 Distributed Systems101 Data Architecture90 Cloud Architecture87 Networking86 API & Integration Architecture78 Reliability & Resilience88 Observability81 Performance & Capacity Engineering90 Security Architecture95 Cost Architecture & FinOps92 Business Architecture93 Architecture Communication91 Enterprise Architecture91 Legacy Modernization92 AI-Era Architecture86 Software Architecture & Engineering84 Architecture Patterns84 Architecture Decision-Making91 The Architect's Meta-Skills92 Delivery & Release Engineering93 Platform Engineering & Developer Experience92 Testing & Quality Architecture90 Data Platform Architecture88 Streaming & Real-Time Data93 Data Governance & Semantics81 Frontend & Experience Architecture91 Edge, Mobile & IoT88 Regulatory & Data Protection Architecture90 Assurance, Audit & Model Risk88

Difficulty Any beginner intermediate advanced

49 questions in Networking.

Quiz

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?

A platform team proposes adopting a service mesh for 40 services. Make the case for and against, then decide.

A service mesh is introduced. p99 latency rises 15% and error rates fall by half. How do you decide whether that is a good trade?

A team adopts a service mesh and sees a 10 ms latency tax on every hop across deep call chains. When is the mesh worth it, and what are the alternatives?

A live-streaming platform ingests video from broadcasters on consumer uplinks where a single lost packet can stall the stream. Why does TCP behave badly here, and what are the options?

A commerce platform hosts storefronts on hundreds of thousands of merchant-owned custom domains, each needing a valid certificate. What architecture handles certificate issuance, renewal and termination at that scale?

A large enterprise is designing its cloud network for dozens of business units with connectivity back to on-premises data centres. Which decisions are irreversible, and what is the most common expensive mistake?

Two companies merge. Both use 10.0.0.0/16 for production and the networks must be connected. What are your options?

2.4 million live WebSocket sessions sit on a gateway fleet being retired this quarter, with a replacement fleet ready in the same region. Sequence the cutover so no session is forced to reconnect more than once and the subscription path is never asked to absorb a storm.

A chat platform's websocket edge gateways lose a region to a cloud networking failure. How should reconnect storms, session resumption, message-gap recovery and gateway draining be designed so a 30-second outage does not become a 3-hour one?

A dashboard product uses WebSockets for live updates. It works at 5,000 concurrent users and falls apart at 50,000. Diagnose the architectural issues.

A deployment drops 200000 WebSocket connections at once. Describe what happens next and how you would make it safe.