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

A mobility platform operates across several Southeast Asian markets where mobile networks vary enormously in quality, latency and reliability. Which network-layer decisions matter most, and which common assumption breaks first?

A user in Mumbai types your URL and presses enter. Walk me through every hop until the HTML reaches their browser. Where would you look first if the page were slow?

Design the network layout for a three-tier application in one cloud region. What are the decisions you cannot easily change later?

In the October 2021 Meta outage, engineers reportedly struggled to physically access equipment because the access-control systems were also down. What class of dependency is that, and how do you find yours?

A logistics platform must integrate with warehouse systems, carrier networks and enterprise customers over private connectivity. What determines the choice between VPN, dedicated interconnect and public endpoints with allow-listing?

A regulated client requires that no traffic between their data centre and your SaaS platform traverses the public internet. Design the connectivity and justify the cost.

An enterprise needs its cloud workloads to reach on-premises databases with predictable latency and without traversing the public internet. What are the options and what do they actually guarantee?

You need to expose an internal service to a partner organisation. VPC peering or a private endpoint service? Justify.

A discussion platform puts a caching reverse proxy in front of its application. Anonymous traffic gets much faster; logged-in users see no improvement and occasionally see another user's content. What went wrong?

A page is identical for all users except a small personalised header. How do you cache it?

Fastly began a software deployment on 12 May 2021 that ran for nearly a month without incident. On 8 June a customer pushed a valid configuration change and 85% of the network started returning errors. What class of risk does that expose, and what does it mean for deployment safety gates?

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?