Blockchain Mock Interview

Master 26 Blockchain interview questions covering consensus algorithms, smart contracts, and cryptography.

Question 1 of 26

Can you explain in general terms what Blockchain is?

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William Swansen has worked in the employment assistance realm since 2007. He is an author, job search strategist, and career advisor who helps individuals worldwide and in various professions to find their ideal careers.

This is an opening question which the interviewer will use to start the conversation, learn more about your background, and collect information they can use throughout the interview. This question also provides you the opportunity to direct the interview towards subject areas that you are comfortable discussing.

William Swansen

"A blockchain is a record in ledger format that records transactions. The unique characteristic is that it is decentralized and is distributed across many individual databases as a flat-file. This distribution model is what makes blockchain records secure."

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26Blockchain Interview Questions & Answers

1.Can you explain in general terms what Blockchain is?

2.Please step me through the way blockchain works.

3.Why do you feel Blockchain is a trusted approach to financial transactions?

4.What is an individual block in a blockchain, and how do you recognize it?

5.What are the individual components of a block?

Blockchain Mock Interview

Can you explain in general terms what Blockchain is?

26Blockchain Interview Questions & Answers

1.Can you explain in general terms what Blockchain is?

2.Please step me through the way blockchain works.

3.Why do you feel Blockchain is a trusted approach to financial transactions?

4.What is an individual block in a blockchain, and how do you recognize it?

5.What are the individual components of a block?

6.Can you remove a block from the networks in Blockchain?

7.Can you change the data in a block once it is written?

8.What are the two types of records that are maintained in the blockchain database?

9.In addition to financial data, what other types of records can be kept in a blockchain?

10.What are the three main types of blockchains?

11.Can you break down the blockchain architecture into its core components?

12.What is a Cryptocurrency, and how does it leverage the features of a blockchain?

13.What role does encryption play in a blockchain?

14.How does a blockchain ledger different from a normal bookkeeping ledger?

15.What is a consensus algorithm, what is its purpose, and can you provide some examples?

16.What are some of the key blockchain principles that address security threats?

17.Can you discuss the differences between Proof-of-Stake and Proof-of-Work?

18.How is a blind signature used in cryptocurrency?

19.Can you explain double-spending in the context of a blockchain?

20.Is a 51% attack related to double-spending, and if so, how?

21.What is a Coinbase transaction, and how is it created?

22.Can you explain Merkle trees and the role they play in a blockchain?

23.How is your transaction data kept safe in a blockchain?

24.Can you explain what Secret Sharing is?

25.Please explain the difference between a scriptPubKey and a P2SH address.

26.What is Mining, and how is it used in a blockchain?