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: graph TB A[DeFi<br/>Decentralized Finance] --> B[Lending/Borrowing<br/>Aave, Compound] A --> C[DEX<br/>Uniswap, Curve] A --> D[Stablecoins<br/>DAI, USDC] A --> …