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Quiz 3.2.3

Pregunta de selección múltiple

Pregunta

Why is synchronization important in a blockchain network? (Select all that apply)

Respostas

To ensure all transactions are recorded at the same time.

To guarantee that all nodes agree on the order and content of transactions.

To allow every node to add new blocks to the blockchain simultaneously.

To ensure that transactions are processed without the need for consensus.

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Pregunta

What are the main purposes of consensus mechanisms in blockchain networks? (Select all that apply)

Respostas

To determine how new blocks are added to the blockchain.

To resolve conflicts and disagreements among nodes.

To increase the computational power of individual nodes.

To randomly select nodes for block verification.

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Pregunta

Which two main processes are essential for nodes in a blockchain network to reach consensus on adding a new block? (Select all that apply)

Respostas

Encrypting transaction data to ensure confidentiality.

Candidate selection for proposing a new block.

Propagation of the new block to other nodes in the network.

Increasing the computational power of the network to solve cryptographic puzzles faster.

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Pregunta

What is the role of a nonce in the mining process of the Proof-of-Work consensus mechanism? (Select all that apply)

Respostas

It serves as a vote in the consensus mechanism to elect the next block proposer.

It acts as a digital signature to authenticate the miner's identity.

It is a random value that miners adjust to solve the cryptographic puzzle for block creation.

It increases the transaction speed within the blockchain network.

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Pregunta

Which of the following are recognized challenges associated with the Proof-of-Work consensus mechanism? (Select all that apply) 

Respostas

It requires minimal computational effort.

It is energy-intensive and computationally demanding.

It enhances scalability and environmental sustainability.

It poses scalability and environmental challenges.

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