C4 Blockchain Technology

Question 1

What is a block in the context of blockchain technology?

Accepted Answer

A container for grouped transactions

Answer

A block is a digital container that stores a group of transactions and is linked to previous blocks in the chain through cryptographic hashes.

Question 2

What ensures immutability in a blockchain?

Accepted Answer

Cryptographic hashing and consensus

Answer

Immutability is ensured through cryptographic hashing and the consensus mechanism, which makes altering past blocks nearly impossible.

Question 3

What role do nodes play in a blockchain network?

Accepted Answer

They validate and store blockchain data

Answer

Nodes are computers that participate in the blockchain network by validating and storing transactions and maintaining a copy of the distributed ledger.

Question 4

Which characteristic of blockchain ensures transparency?

Accepted Answer

Distributed ledger

Answer

Blockchain's distributed ledger allows all participants to access and verify the same data, which fosters transparency.

Question 5

What is the purpose of a consensus mechanism in blockchain?

Accepted Answer

To validate transactions and state

Answer

Consensus mechanisms help nodes in a decentralized network agree on the validity of transactions and the current state of the blockchain.

(C4) CryptoCurrency Certification Consortium Practice Test

(C4) CryptoCurrency Certification Consortium Practice Test

C4 Blockchain Technology