About

What this is

An interview-preparation site for network engineering roles in trading infrastructure — built for one person's 2027 preparation and published because explaining out loud is how the material gets learned. Questions and answers cover multicast market data, low-latency design principles, exchange connectivity (SGX/HKEX) and routing.

Content policy

• Own words plus citations. Everything here is a paraphrase of publicly sourced study material, written into a personal knowledge base with a link to the source. No paid course text, no book chapters, no vendor material is reproduced — those are cited, not copied.
• The knowledge base is the single source. The site is generated from those notes at build time; when a note is corrected, the next build carries the correction here.
• Verification marks travel with the facts. Answers markedUnverified could not be checked against a primary source yet; No single sourcemeans the claim is standard engineering knowledge without one authoritative reference; Corrected vs source means a secondary source was found wrong and the note records the correction. Corrections are logged in the knowledge base, not silently rewritten.

How to use it

• Study pages group questions by source note, with reference cards, incident postmortems and full notes attached.
• Quizzes are spoken-answer flashcards: say the answer, reveal, grade yourself. Progress is stored only in your own browser.
• Search covers every question, card and note.

Colophon

Astro, deployed on Cloudflare Pages. Type is Atkinson Hyperlegible (SIL OFL). Styling descends from Bear Blog's MIT-licensed default theme. The site is part ofgalenliu.com.