CBC Blockchain Fundamentals & Technologies

Question 1

What is the primary function of blockchain technology?

Accepted Answer

To provide a secure and transparent decentralized ledger

Answer

Blockchain is a decentralized, immutable ledger used to record transactions securely and transparently.

Question 2

Which consensus mechanism is most commonly used in Bitcoin’s blockchain?

Accepted Answer

Proof of Work (PoW)

Answer

Proof of Work (PoW) is the consensus mechanism used in Bitcoin to validate transactions and secure the network.

Question 3

What makes blockchain immutable?

Accepted Answer

It uses cryptographic hashing and linking

Answer

Blockchain immutability is achieved through cryptographic hashing and a linked chain structure that prevents data alteration.

Question 4

Which feature of blockchain enhances security?

Accepted Answer

Decentralization

Answer

Decentralization removes a single point of failure, reducing the risk of data tampering and cyberattacks.

Question 5

What role do smart contracts play in blockchain technology?

Accepted Answer

They automate transactions based on predefined rules

Answer

Smart contracts are self-executing agreements with coded terms that automate transactions without intermediaries.

(CBC) Certified Blockchain Consultant Practice Test