Created by

Vikash chaudhary

This 'Blockchain Technology Online Test' covers questions across all the topics related to the Blockchain from basic to advanced.

Get New Questions in Each Attempt

Total Questions: 30
Time Allotted: 30 minutes
Passing Score: 50%
Randomization: Yes
Certificate: Yes
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1 / 30

1. How often is a new block added to the Bitcoin blockchain?

a) Every 10 minutes

b) Every hour

c) Every day

d) Every week

2 / 30

2. What role do blockchain-based registries play in protecting intellectual property rights?

a) Blockchain-based registries centralize control over intellectual property rights

b) Blockchain-based registries increase anonymity of intellectual property owners

c) Blockchain-based registries provide transparent and tamper-proof records of intellectual property ownership

d) Blockchain-based registries restrict access to intellectual property rights

3 / 30

3. In blockchain, why is RSA encryption commonly used for digital signatures?

a) Because it requires no keys

b) Because it provides faster encryption than symmetric algorithms

c) Because it allows for secure communication without encryption

d) Because it provides secure digital signatures and ensures transaction authenticity

4 / 30

4. What distinguishes Cardano from other blockchain networks like Ethereum?

a) Cardano uses a different consensus algorithm called Ouroboros

b) Cardano does not support smart contracts

c) Cardano has a shorter block time

d) Cardano does not have its native cryptocurrency

5 / 30

5. What is symmetric cryptography?

a) A method where the same key is used for both encryption and decryption

b) A method where different keys are used for encryption and decryption

c) A method that requires no keys

d) A method that uses multiple keys for encryption

6 / 30

6. What is gas in the context of Ethereum transactions?

a) A cryptocurrency used for payments on the Ethereum network

b) A unit of measurement for the computational cost of executing transactions and smart contracts

c) A type of consensus algorithm used for reaching agreement on the state of the Ethereum blockchain

d) A mechanism for selecting the next block proposer in the Ethereum network

7 / 30

7. How do smart contracts improve efficiency in legal contract execution?

a) Smart contracts increase the complexity of legal contracts

b) Smart contracts reduce the need for human intervention in contract execution

c) Smart contracts limit the enforceability of legal contracts

d) Smart contracts hinder transparency in legal contract processes

8 / 30

8. What is Decentralized Finance (DeFi)?

a) A centralized financial system controlled by banks and governments

b) A system of financial services and applications built on blockchain technology

c) A digital currency similar to Bitcoin

d) A consensus algorithm used in blockchain networks

9 / 30

9. What does SHA-256 stand for in cryptography?

a) Secure Hash Algorithm - 256 bits

b) Secure Hashing Algorithm - 256 bits

c) Secure Hash Algorithm - 256 bytes

d) Secure Hashing Algorithm - 256 bytes

10 / 30

10. What is the consensus algorithm used in the Ripple network?

a) Proof of Work (PoW)

b) Proof of Stake (PoS)

c) Ripple Consensus Protocol (RCP)

d) Delegated Proof of Stake (DPoS)

11 / 30

11. What are some benefits of blockchain-based voting systems?

a) Increased vulnerability to cyber attacks

b) Reduced costs and increased efficiency of elections

c) Decreased accessibility for voters

d) Limited transparency and accountability in election results

12 / 30

12. What is the main disadvantage of symmetric cryptography in blockchain?

a) It requires two keys

b) It is slower than asymmetric cryptography

c) Key management and distribution can be challenging

d) It cannot be used for data encryption

13 / 30

13. What is asset tokenization?

a) Converting physical assets into digital tokens on a blockchain

b) Encrypting sensitive data to ensure security

c) Creating a centralized database for asset management

d) Generating unique cryptographic keys for asset transactions

14 / 30

14. How does the blockchain trilemma impact security in blockchain networks?

a) By decreasing the level of security due to trade-offs with decentralization and scalability

b) By increasing the level of security through stronger encryption algorithms

c) By providing centralized control over security measures

d) By limiting access to blockchain networks to a select group of participants

15 / 30

15. Which of the following is an example of a symmetric encryption algorithm?

a) RSA

b) DES

c) ECC

d) Diffie-Hellman

16 / 30

16. Which year did the first Bitcoin halving occur?

a) 2010

b) 2012

c) 2014

d) 2016

17 / 30

17. Which hashing algorithm is commonly used in Bitcoin?

a) MD5

b) SHA-1

c) SHA-256

d) AES

18 / 30

18. Which of the following is an example of an asymmetric encryption algorithm?

a) AES

b) RSA

c) 3DES

d) Blowfish

19 / 30

19. What happens if the hash of a blockchain transaction does not match the hash derived from the digital signature verification?

a) The transaction is accepted

b) The transaction is discarded

c) The transaction is re-encrypted

d) The transaction is sent for manual review

20 / 30

20. What is the significance of interoperability in blockchain-based healthcare systems?

a) Interoperability ensures compatibility with legacy systems

b) Interoperability allows for seamless data exchange between different healthcare providers

c) Interoperability increases security and privacy of patient data

d) Interoperability is not relevant to blockchain-based healthcare systems

21 / 30

21. What is a Bitcoin transaction?

a) A transfer of Bitcoin from one wallet to another

b) A cryptographic algorithm used for encryption

c) A process of mining new Bitcoin blocks

d) A method of exchanging Bitcoin for other cryptocurrencies

22 / 30

22. How does Proof of Work (PoW) contribute to the energy consumption of blockchain networks?

a) By reducing the computational power required to validate transactions

b) By increasing the efficiency of transaction processing

c) By requiring miners to compete for block rewards through energy-intensive computational tasks

d) By limiting the number of transactions that can be processed per second

23 / 30

23. How does a digital signature ensure the integrity of a blockchain transaction?

a) By encrypting the transaction data

b) By creating a unique hash that can be verified with the sender’s private key

c) By storing the transaction on a central server

d) By using the same key for all transactions

24 / 30

24. What is the primary purpose of hashing in blockchain?

a) To encrypt data

b) To create a fixed-size output from variable input data

c) To generate public and private keys

d) To manage user identities

25 / 30

25. Which type of blockchain network can benefit the most from using ECC for encryption and digital signatures?

a) Public blockchain

b) Private blockchain

c) Consortium blockchain

d) Hybrid blockchain

26 / 30

26. Which blockchain platform has a faster block time, Ethereum or Bitcoin?

a) Ethereum

b) Bitcoin

c) Both have the same block time

d) Neither has a block time

27 / 30

27. What is the main purpose of the difficulty adjustment in blockchain mining?

a) To increase the value of cryptocurrency

b) To regulate the speed at which new blocks are added

c) To change user permissions

d) To store transaction histories

28 / 30

28. Which of the following is an example of a widely used cryptographic hash function?

a) RSA

b) SHA-256

c) DES

d) AES

29 / 30

29. Which consensus mechanism is commonly used in private blockchains?

a) Proof-of-work

b) Proof-of-stake

c) Proof-of-authority

d) Proof-of-space

30 / 30

30. What distinguishes digital payments facilitated by blockchain technology from traditional payment methods?

a) Digital payments are centralized, while traditional payment methods are decentralized

b) Digital payments are faster and more secure, while traditional payment methods are slower and less secure

c) Digital payments require intermediaries like banks, while traditional payment methods do not

d) Digital payments are anonymous, while traditional payment methods require personal information

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Blockchain Technology Online Test

This 'Blockchain Technology Online Test' covers questions across all the topics related to the Blockchain from basic to advanced.

Please provide accurate information so we can send your Achievement Certificate by mail.

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