Comprehensive Web3 and blockchain interview questions covering Ethereum, Solidity, DeFi, security, and advanced protocol design. Blockchain Fundamentals Core concepts every Web3 developer should know: Easy: Blockchain basics, Ethereum vs Bitcoin, smart contracts, gas, wallets, keys, ERC-20, NFTs, dApps, …

Medium-level Web3 interview questions covering DeFi, advanced Solidity, security, and protocol design. Q1: Explain DeFi and common DeFi protocols. Answer: DeFi Stack Automated Market Maker (AMM) Constant Product Formula: $x \times y = k$ Q2: What are Solidity modifiers and function visibility? Answer: Modifiers …