The Role of Blockchain in Secu

1., What is a key feature of blockchain technology that helps in securing digital transactions?

• a) Centralized control

• b) Transparent public ledger

• c) High transaction fees

• d) Limited visibility of transactions

How does blockchain technology reduce the risk of fraud and system failures?

• a) By relying on a central authority

• b) By using a distributed network of nodes

• c) By limiting the number of transactions

• d) By using physical security measures

3. 3. Which mechanism is commonly used in blockchain to validate transactions and prevent double spending

• a) Proof of Authentication

• b) Proof of Work

• c) Proof of Delivery

• d) Proof of Registration

4. 4. What role do smart contracts play in blockchain technology

• a) They increase transaction costs

• b) They manually process transactions

• c) They automate and enforce agreements

• d) They delay transaction validation

5. 5. How does blockchain technology ensure data integrity and prevent unauthorized alterations?

• a) By encrypting data with cryptographic methods

• b) By limiting data access to a few users

• c) By storing data in a single location

• d) By using physical locks on data storage

6. What is the core principle behind blockchain technology?

• Centralization

• Monopolization

• Privatization

• Decentralization

7. 7. What role does the public ledger play in blockchain technology?

• a.) It records each transaction and is visible to all network participants

• b.) It stores private information of users

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• c.) It tracks the financial history of governments

• d.) It tracks the financial history of governments

8. What is the purpose of smart contracts in blockchain technology?

• To manually review each transaction

• To provide physical storage of digital assets

• To replace blockchain security protocols

• To automate and enforce agreements

9. 9. How does blockchain technology prevent unauthorized alterations?

• By using advanced cryptographic methods

• By using a central authority for oversight

• By limiting the number of transactions per day

• By providing users with physical keys