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  1. What is web3?

  2. What is blockchain?

  3. How does the blockchain work?

  4. What is Ethereum?

  5. What is a smart contract?

  6. What is a node in Ethereum?

  7. How can you connect with a node?

  8. Can you “hide” a transaction?

  9. Where are transactions stored?

  10. Ethereum uses which consensus?

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  1. How do you make a smart contract?

  2. What are dApps?

  3. Which programming language is used to write dApps?

  4. Which programming language is used to write smart contracts?

  5. What is a DAO?

  6. What is DeFi?

  7. What are wallets and why are they used?

  8. Give some examples of wallets.

  9. What are some Ethereum networks that exist?

  10. Mention some of the popular Blockchain-based smart contracts.

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  1. Are there any standards for smart contracts?

  2. What are gas fees?

  3. Define Remix.

  4. What is ether?

  5. How can you obtain ether?

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Here are some bonus questions to check your knowledge:

  • How does Ethereum differ from Bitcoin?
  • What is EVM?
  • What is Blockchain technology?
  • What is Truffle?
  • Define MetaMask.
  • What is the ABI of a smart contract?
  • What is the EVM bytecode?
  • What is the ABIEncoderV2 pragma statement?
  • What is a library in Solidity?
  • What is a re-entrancy attack?
  • How to generate a random int in Solidity?
  • How to create an in-memory mapping?
  • What are structs?
  • How can I initialize a struct?
  • How can we create a constructor?
  • What are the state variables?
  • What data is stored in storage?
  • What is a stack?
  • What is the address type?
  • What is the mapping type?
  • Can mapping be multi-level?

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Elyse Y. Robinson Elyse Y. Robinson is the Founder of Switch Into Tech where she does monthly seminars, posts weekly freebies to help you switch into tech, Writer of Nube: Switch Into A Cloud Career, podcaster for Nobody Wants To Work Tho, creator of to help you not go into college debt, and in school for Data Science. Elyse is in love with Mexico, researching any and everything, and helping people switch into tech.