Blockchain Intermediate Interview Questions
  1. How would you design a blockchain-based voting system, and what are the potential challenges?
  2. What is a fork in the blockchain network, and what are its different types?
  3. How does proof-of-work consensus algorithm work, and what are its limitations?
  4. Can you explain the difference between proof-of-work and proof-of-stake consensus algorithms?
  5. What is a 51% attack, and how can it be prevented in a blockchain network?
  6. How is privacy maintained in a public blockchain network?
  7. What is a token in a blockchain network, and how is it created?
  8. How would you design a decentralized exchange, and what are its key components?
  9. Can you explain the concept of gas in Ethereum blockchain?
  10. How is scalability achieved in a blockchain network, and what are the potential solutions?
  11. How does the blockchain network prevent Sybil attacks, and what are its potential solutions?
  12. Can you explain the difference between a public key and a wallet address in a blockchain network?
  13. How does a blockchain network handle lost or stolen private keys?
  14. What is a digital signature in blockchain technology, and how is it used?
  15. Can you explain the concept of a smart contract oracle, and how is it used in a blockchain network?
  16. How is the order of transactions determined and maintained in a blockchain network?
  17. Can you explain the difference between a soft fork and a hard fork in a blockchain network?
  18. How does a blockchain network ensure transaction finality?
  19. Can you explain the difference between on-chain and off-chain transactions in a blockchain network?
  20. What is a consensus mechanism, and how is it implemented in a blockchain network?
Blockchain Interview Questions For Experienced
  1. Can you explain the difference between sharding and partitioning in a blockchain network?
  2. How does zero-knowledge proof work, and what are its applications in blockchain technology?
  3. Can you explain the difference between permissioned and permissionless blockchains?
  4. How is interoperability achieved in a blockchain network, and what are the potential challenges?
  5. Can you explain the concept of a sidechain in a blockchain network, and how is it different from the main chain?
  6. What is the role of governance in a blockchain network, and how is it achieved?
  7. How does blockchain technology enable decentralized finance, and what are its potential benefits and risks?
  8. Can you explain the difference between Layer 1 and Layer 2 solutions in a blockchain network?
  9. How would you design a blockchain-based supply chain management system, and what are its potential benefits?
  10. Can you explain the difference between a hard fork and a soft fork in a blockchain network, and what are their potential impacts?
  11. What are the potential security risks associated with blockchain technology, and how can they be mitigated?
  12. How does a decentralized autonomous organization (DAO) work, and what are its potential benefits and challenges?
  13. Can you explain the concept of a non-fungible token (NFT), and how is it different from a regular token?
  14. What is a Merkle tree, and how is it used in blockchain technology?
  15. How is consensus achieved in a proof-of-stake consensus algorithm, and what are its potential limitations?
  16. Can you explain the difference between homomorphic encryption and cryptographic obfuscation in blockchain technology?
  17. How is transaction privacy maintained in a blockchain network, and what are its potential challenges?
  18. What is the role of zero-knowledge proofs in blockchain technology, and how do they enhance network privacy?
  19. Can you explain the difference between a sidechain and a cross-chain solution in a blockchain network?
  20. How does a blockchain network handle network partitioning, and what are its potential solutions?
  21. What is the role of token economics in a blockchain network, and how is it implemented?
  22. Can you explain the concept of a decentralized identifier (DID), and how is it used in blockchain technology?
  23. How does a blockchain network prevent censorship, and what are its potential solutions?
  24. What is the role of sharding in blockchain technology, and how does it enhance network scalability?
  25. How does a blockchain network handle network congestion, and what are its potential solutions?