Execution-layer mental models, gas, storage, rollups, DA, and MEV—paced like other tracks: four ~20–25 minute segments per module (~two hours) plus short hands-on checkpoints. Level 1 is the syllabus map; Level 2 deepens Ethereum execution/mempool/sequencer mental models and Arbitrum Nitro architecture for L2 interviews.
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Same rhythm as ZK and Cryptography tracks: four reading segments per module, each with a checkpoint question. Green badges mark modules with hands-on segments (here: guided note-taking + a tiny design sketch).
Level 1 — 80/20 syllabus. Level 2 — Ethereum execution + mempool + sequencer framing, then Arbitrum Nitro (Geth, proving, bridging).