Blockchain Developers Interview Questions – Set 2


This page provides quiz (interview questions) for Blockchain Developers. These are questions, primarily, related with Bitcoin Blockchain. Some of the topics covered are following:

  • Merkle tree
  • Block
  • Mining

Block header consists of metadata related with which of the following?

Block identifier in a Blockchain, a Hash value, is calculated as a function of which of the following?

Which of the following data structure is used to summarize all the transactions in a block?

Which of the following algorithm is used in Bitcoin's merkle tree?

A transaction is added to a candidate block solely based on fees associated with the transaction?

Which of the following is considered by miners for adding a transaction to a candidate block?

Which of the following is considered first by miners when adding a transaction to a candidate block?

Which of the following is used for first transaction added to the block, that goes into miners' wallet?

A valid Bitcoin transaction do have expiration time-out.

If the block is at height 282125, what will be the reward value (in form of number of bitcoins) for the miner for adding a new block?

Ajitesh Kumar

Ajitesh Kumar

Ajitesh has been recently working in the area of AI and machine learning. Currently, his research area includes Safe & Quality AI. In addition, he is also passionate about various different technologies including programming languages such as Java/JEE, Javascript and technologies such as Blockchain, mobile computing, cloud-native technologies, application security, cloud computing platforms, big data etc.

He has also authored the book, Building Web Apps with Spring 5 and Angular.
Ajitesh Kumar

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