Categories: BlockChainCareer PlanningInterview questions

Blockchain Developers Interview Questions – Set 1

This page covers interview questions for Blockchain developers. It covers some of the following concepts in relation with Bitcoin Blockchain:

Blockchain fundamentals
Block related concepts

Each block of a Blockchain consists of which of the following?

A hash pointer to previous block

Timestamp

List of transactions

All of the above

Correct! Wrong!

Which of the following is first distributed blockchain implementation?

Bitcoin

Ethereum

Correct! Wrong!

Bitcoin is based on ________ blockchain?

Private

Public

Public Permissioned

Permissioned

Correct! Wrong!

Blockchain can be stored as which of the following?

A flat file

A Database

Both of the above

None of the above

Correct! Wrong!

In blockchain, blocks are linked ________?

Backward to previous block

Forward to next block

Not linked with each other

Correct! Wrong!

The first block in the blockchain is called as _______?

Zero Block

Super Block

Genesis Block

First Block

Correct! Wrong!

Hash identifying each block in the Blockchain is generated using which of the following cryptographic algorithm?

SHA128

SHA256

Correct! Wrong!

A block in the blockchain can never have more than one parent block.

True

False

Correct! Wrong!

A block in the blockchain can never have multiple children blocks.

True

False

Correct! Wrong!

Blockchain forks can result in which of the following?

Multiple parent blocks

Multiple children blocks

Correct! Wrong!

Blockchain Developer Interview Questions - Set 1

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Ajitesh Kumar

I have been recently working in the area of Data analytics including Data Science and Machine Learning / Deep Learning. I am also passionate about different technologies including programming languages such as Java/JEE, Javascript, Python, R, Julia, etc, and technologies such as Blockchain, mobile computing, cloud-native technologies, application security, cloud computing platforms, big data, etc. For latest updates and blogs, follow us on Twitter. I would love to connect with you on Linkedin. Check out my latest book titled as First Principles Thinking: Building winning products using first principles thinking. Check out my other blog, Revive-n-Thrive.com