Blockchain Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Blockchain Interview Questions

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Which cryptographic algorithm is used in blockchain?

What is the difference between proof-of-work and proof-of-stake?

Can you remove a complete block from a network?

How does the security of a block works?

What is the importance of merkle trees in blockchain?

What is the difference between public and private key?

What is the difference between bitcoin blockchain and ethereum blockchain?

How can blocks be identified?

What do you mean by coinbase transaction?

List the key features of blockchain?

What is a ledger? Name the common type of ledgers that can be considered by users in blockchain?

What is the role of encryption in blockchain?

Can you modify the data in a block?

Every block of blockchain consist of what elements?

What is the difference between blockchain and distributed ledger?

Un-Answered Questions { Blockchain }

Explain why a blockchain needs tokens to operate?

What is the lightning network?

How dapps are different from smart contracts?

How are blocks changed together?

How would you differentiate bitcoin blockchain and ethereum blockchain?

What variables are stored in the storage and memory areas respectively?

What is the principle of blockchain technology?

What is Solidity?

Why is blockchain a trustworthy approach?

What are blocks in a blockchain ecosystem?

What is the difference between proof-of-work and proof-of-stake?

What is smart contract?

Does it have any benefit in blockchain technology?

Why do we need decentralized systems?

Why blockchain is a trusted approach?

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