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Blockchain Components Quiz

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Questions and Answers

What is the function of the 'hash' in a blockchain?

It determines the number of transactions in the block.

It stores the digital data in the block.

It serves as a unique identifier for the current block. (correct)

It links the current block to the next block in the chain.

Why is the 'previous hash' important in a blockchain?

It identifies the next block in the sequence.

It prevents unauthorized access to the blockchain.

It secures the current block's contents. (correct)

It determines the order of blocks in the chain.

What is the role of 'nonce' in the mining process of a block?

It serves as a digital signature for each block.

It verifies the authenticity of transactions.

It ensures transparency in the blockchain network.

It is a numerical value adjusted by miners during mining. (correct)

Which characteristic of blockchain ensures that it is resistant to unauthorized tampering?

Immutability Signup and view all the answers

How does blockchain achieve security against fraud and unauthorized access?

By encrypting all transactions within the blocks. Signup and view all the answers

What is the purpose of distributing authority across the network in blockchain technology?

To ensure no single entity controls the entire network. Signup and view all the answers

What is the main function of a nonce in the context of blockchain technology?

To adjust a numerical value during the mining process Signup and view all the answers

How does the 'previous hash' contribute to the security of a blockchain network?

By creating a secure link between blocks Signup and view all the answers

What is the purpose of using cryptographic techniques in ensuring security in blockchain technology?

To protect against fraud and unauthorized access Signup and view all the answers

In the context of blockchain, what role does transparency play in the system?

Provides open visibility of data and transactions Signup and view all the answers

Which characteristic of blockchain ensures that data added to it cannot be altered?

Immutability of the blockchain Signup and view all the answers

Why is it important for miners to adjust the nonce value during block mining?

To ensure continuity of the entire chain Signup and view all the answers