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

86 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 multi-product SaaS company with about forty services in three languages is evaluating a service mesh. Is it justified, and what would you check first?

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 new cluster must schedule 60000 pods. The only free allocation inside the corporate 10.0.0.0/8 is one /20, and the network team will not issue more. The platform team requires per-pod firewall rules and flow logs from the cloud provider's own networking. Which address strategy fits?

A platform's cloud subnets are running out of addresses because container workloads consume one IP per pod. What happens as exhaustion approaches, and what are the options?

Pods have stopped scheduling on a cluster that has plenty of free CPU and memory. What do you check?

A 180 KB JSON response takes about 400 ms to reach a client 90 ms away on a connection whose handshake has just finished. The handler took 12 ms and the link has 200 Mbps spare. Measuring from the moment the request is written, what sets the floor?

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?

An internal API is fast in isolation but a page that uses it takes 2 seconds for users in Asia while taking 200 ms in the origin region. The backend is equally fast for both. Diagnose and fix.

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?