This video on “Blockchain Interview Questions And Answers” will help you prepare for Blockchain engineer interviews. This video is ideal for both beginners as well as professionals who are appearing for Blockchain interviews. Once you’ve lined up a job interview with a potential employer, you’ll have an opportunity to study that particular organization and their use of Blockchain technology. That can help you to prepare for specific Blockchain interview questions relevant to that employer. Until then, you can prepare for more general Blockchain interview questions by knowing how to demonstrate your broader knowledge of the implications and applications of Blockchain Technology. Learn what are the most important Blockchain interview questions and answers and know what will set you apart in the interview process.
Below are some of the Blockchain interview questions that were answered and discussed in this video:
1. Differentiate between Blockchain and Hyperledger ( 00:20 )
2. How would you explain Blockchain Technology to someone who doesn’t know it? ( 01:50 )
3. What is Merkel tree? ( 03:25 )
4. What do you mean by blocks in the Blockchain technology? ( 04:14 )
5. How is Blockchain distributed ledger different from a traditional ledger? ( 05:02 )
6. How can you identify a block? ( 07:37 )
7. What is cryptography? What is its role in Blockchain? ( 08:46 )
8. What are the different types of Blockchains? ( 10:08 )
9. What happens when you try to deploy a file with multiple contracts? ( 11:10 )
10. What is a Genesis block? ( 11:33 )
11. How is the hash (Block signature) generated? ( 12:21 )
12. List down some of the extensively used cryptographic algorithms ( 12:59 )
13. What is a smart contract and list some of its applications? ( 13:28 )
14. What is Ethereum network and how many Ethereum networks are you familiar with? ( 14:26 )
15. Where do nodes run smart contract code? ( 15:28 )
16. What is Dapp and how is it different from a normal application? ( 16:00 )
17. Name some leading open source platforms for developing Blockchain applications ( 17:17 )
18. What is the very first thing you must specify in a solidity file? ( 17:40 )
19. What is the difference between Bitcoin and Ethereum? ( 18:06 )
20. What is nonce and how is it used in mining? ( 19:20 )
21. Name the steps that are involved in the Blockchain project implementation ( 20:14 )
22. Explain a real-life use case where Blockchain is being used ( 21:15 )
23. List and explain the parts of EVM memory? ( 21:58 )
24. What happens if the execution of a smart contract costs more than the specified gas? ( 22:44 )
25. What does the gas usage in a transaction depend on and how is transaction fee calculated? ( 23:16 )
26. What is a fork? What are some of the types of forking? ( 24:01 )
27. Differentiate between proof of work vs proof of stake ( 24:34 )
28. What is 51% attack? ( 25:42 )
29. What are function modifiers in solidity and mention the most widely used modifiers ( 26:15 )
30. Write a crowd sale smart contract code in solidity programming language ( 27:28 )
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After completing this course, you will be able to:
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2. Build compelling Blockchain applications using the Ethereum Blockchain
3. Design, test and deploy secure Smart Contracts
4. Use the latest version of Ethereum development tools (Web3 v1.0)
5. Develop Hyperledger Blockchain applications using Composer Framework
6. Model the Blockchain applications using Composer modeling language
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