Blockchain game

1. Which of the following statements best describes a blockchain?

• A) A decentralized digital ledger that records transactions in a secure and transparent manner

• B) A centralized database controlled by a single entity.

• C) A social media platform for sharing photos and videos.

• D) A type of encryption algorithm used in cybersecurity.

2. What is the primary benefit of using a blockchain system?

• A) Increased transaction speed.

• B) Greater data privacy.

• C) Lower transaction costs.

• D) Enhanced security and transparency.

3. Which of the following is not a component of a blockchain network?

• A) Nodes

• B) Miners

• C) Blocks

• D) Apps

4. How does a blockchain achieve decentralization?

• A. Through the use of a centralized server

• B. By relying on a single node to validate transactions

• C. By using a distributed network of nodes

• D. By allowing anyone to create and control a block.

5. How is consensus achieved in a blockchain?

• a) Through a central authority

• b) Through a voting system

• c) Through a proof-of-work or proof-of-stake mechanism

• d) Through a peer-to-peer network

6. Which of the following is a characteristic of a blockchain?

• A. Centralized control

• B. Real-time processing

• C. Immutability

• D. Unlimited storage capacity

7. What is a smart contract in a blockchain network?

• A) A digital asset that represents ownership of a physical item.

• B) An agreement between two parties that is enforced by the blockchain.

• C) A mining algorithm used to create new blocks in the blockchain

• D) An encryption protocol used to secure blockchain transactions.