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?

<p>Immutability (C)</p> Signup and view all the answers

How does blockchain achieve security against fraud and unauthorized access?

<p>By encrypting all transactions within the blocks. (D)</p> Signup and view all the answers

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

<p>To ensure no single entity controls the entire network. (D)</p> Signup and view all the answers

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

<p>To adjust a numerical value during the mining process (C)</p> Signup and view all the answers

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

<p>By creating a secure link between blocks (B)</p> Signup and view all the answers

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

<p>To protect against fraud and unauthorized access (B)</p> Signup and view all the answers

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

<p>Provides open visibility of data and transactions (B)</p> Signup and view all the answers

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

<p>Immutability of the blockchain (B)</p> Signup and view all the answers

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

<p>To ensure continuity of the entire chain (B)</p> Signup and view all the answers

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