Multiple choice questions from the learning modules. Pick a track or mix all of them.
📝 Concept Quiz
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⚡ Estimation Drills
60 cards. 30 seconds each. Numbers you need to know cold in any system design interview.
⚡ Estimation Drills
Card 1 of 60
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Practice
Sharpen system design skills through deliberate repetition.
🎯
Mock Interview
Pick a system and start a 35-minute timed session. Work from memory —
diagram, estimate, explain your tradeoffs. Timer prompts guide you through
each stage. Review the model answer when time's up.
Tip:
Answer out loud. Aim for: Clarify → Estimate → High-level design → Deep dive → Tradeoffs.
The first 5 minutes on clarifications always impresses interviewers.
⚡ Estimation Drills
Flashcard mode. 60 cards covering powers of 2, latency numbers,
throughput benchmarks, storage sizes. 30 seconds per card.
📝 Concept Quizzes
Multiple choice questions from all learning modules. Interview Skills,
Storage & Databases, System Patterns. Inline explanations for every answer.
📊 Your Progress
⚖️ Comparison Mode
Pick two systems and compare their key metrics side by side.