Blockchain Technology Online Test

Created by

Vikash chaudhary

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

Get fresh, 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. What is the primary difference between Ethereum and Bitcoin?

a) Ethereum uses a different consensus algorithm than Bitcoin

b) Ethereum has a higher maximum supply than Bitcoin

c) Ethereum is primarily used for smart contracts and decentralized applications, while Bitcoin is primarily used as a digital currency

d) Ethereum transactions are faster than Bitcoin transactions

2 / 30

2. How does a blockchain network defend against a 51% attack?

a) By increasing transaction fees

b) By implementing stronger encryption algorithms

c) By requiring more confirmations for transactions

d) By restricting access to the network

3 / 30

3. What is the process of mining in the Bitcoin network?

a) Verifying transactions and adding them to the blockchain

b) Encrypting data on the blockchain

c) Solving complex mathematical puzzles to create new blocks

d) Exchanging Bitcoin for other cryptocurrencies

4 / 30

4. What is the purpose of the Merkle tree in mining?

a) To store transaction data efficiently

b) To organize transactions into blocks

c) To verify the integrity of transactions within a block

d) To determine the difficulty level of mining

5 / 30

5. 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

6 / 30

6. What is the role of tokenization platforms in asset tokenization?

a) Tokenization platforms provide custody services for digital assets

b) Tokenization platforms issue and manage digital tokens representing assets

c) Tokenization platforms enforce regulatory compliance for asset tokenization

d) Tokenization platforms are not relevant to asset tokenization

7 / 30

7. Which cryptographic algorithm is used for digital signatures and encryption in blockchain?

a) SHA-256

b) RSA

c) MD5

d) AES

8 / 30

8. What distinguishes Stellar from other blockchain networks like Bitcoin and Ethereum?

a) Stellar does not use blockchain technology

b) Stellar is primarily used for decentralized applications

c) Stellar has a different consensus algorithm called Stellar Consensus Protocol (SCP)

d) Stellar does not have its native cryptocurrency

9 / 30

9. What is the Ethereum Virtual Machine (EVM)?

a) A physical machine used to mine Ethereum blocks

b) A software environment that executes smart contracts on the Ethereum blockchain

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

d) A mechanism for validating transactions on the Ethereum network

10 / 30

10. What is Ganache?

a) A digital currency similar to Bitcoin

b) A blockchain platform for building decentralized applications (DApps)

c) A personal blockchain for Ethereum development

d) A consensus algorithm used in blockchain networks

11 / 30

11. What is Proof of Work (PoW) in the context of blockchain technology?

a) A mechanism for verifying the authenticity of digital signatures

b) A consensus mechanism that requires participants to solve complex mathematical puzzles to validate transactions

c) A cryptographic technique for encrypting data on the blockchain

d) A method for securing private keys in blockchain wallets

12 / 30

12. What impact does blockchain have on data privacy in IoT networks?

a) Blockchain decreases data privacy by exposing sensitive information to the public

b) Blockchain increases data privacy by encrypting IoT data with traditional methods

c) Blockchain enhances data privacy by providing secure and decentralized data storage

d) Blockchain has no impact on data privacy in IoT networks

13 / 30

13. What is the primary advantage of using blockchain platforms and frameworks for application development?

a) Reduced complexity of application development

b) Faster transaction processing

c) Higher level of centralization

d) Lower security risks

14 / 30

14. 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

15 / 30

15. Which public blockchain introduced the concept of smart contracts?

a) Bitcoin

b) Ethereum

c) Ripple

d) Hyperledger Fabric

16 / 30

16. How are new blocks added to a blockchain?

a) By users voting

b) By central authorities

c) Through consensus mechanisms like proof-of-work or proof-of-stake

d) By randomly selecting transactions

17 / 30

17. What is Remix?

a) A digital currency similar to Bitcoin

b) A blockchain platform for building decentralized applications (DApps)

c) An online development environment for Ethereum smart contracts

d) A consensus algorithm used in blockchain networks

18 / 30

18. What is a consensus algorithm in blockchain?

a) A method for reaching agreement on the state of the blockchain network

b) A cryptographic algorithm used for encryption

c) A mechanism for generating digital signatures

d) A protocol for transferring cryptocurrency between wallets

19 / 30

19. What does the blockchain trilemma refer to?

a) The three main components of blockchain technology

b) The complexity of blockchain consensus mechanisms

c) The trade-off between decentralization, security, and scalability in blockchain networks

d) The impact of blockchain on global economies

20 / 30

20. Why might an organization choose to use a private blockchain instead of a public one?

a) To increase energy consumption

b) To have greater control over access and data

c) To enable anyone to join the network

d) To avoid cryptographic security

21 / 30

21. How can a hybrid blockchain benefit an organization?

a) By eliminating all access controls

b) By providing both privacy and selective transparency

c) By requiring no consensus mechanism

d) By being completely decentralized

22 / 30

22. What is a digital signature in the context of blockchain?

a) A method to encrypt data

b) A public key used for hashing

c) A cryptographic technique for verifying the authenticity and integrity of a message, software, or digital document

d) A physical signature scanned and stored digitally

23 / 30

23. How does blockchain technology address issues of fraud and forgery in real estate transactions?

a) By centralizing control over property ownership records

b) By increasing anonymity of property ownership

c) By decentralizing storage and verification of property ownership records

d) By restricting access to property ownership records

24 / 30

24. What is the process of halving in the context of Bitcoin?

a) Reducing the size of blockchain blocks

b) Reducing the block reward for miners by half approximately every four years

c) Increasing the block size limit

d) Increasing the transaction fees

25 / 30

25. How do blockchain-based cross-border payments compare to traditional methods like SWIFT?

a) Blockchain-based payments are slower and less secure than SWIFT

b) Blockchain-based payments have higher transaction fees than SWIFT

c) Blockchain-based payments do not require intermediaries like banks, unlike SWIFT

d) Blockchain-based payments are not compatible with fiat currencies, unlike SWIFT

26 / 30

26. What is the primary advantage of DApps over traditional centralized applications?

a) Higher scalability

b) Greater security and censorship resistance

c) Lower development costs

d) Faster transaction processing times

27 / 30

27. What type of consensus mechanism is often used in consortium blockchains?

a) Proof-of-work

b) Proof-of-stake

c) Proof-of-authority

d) Proof-of-space

28 / 30

28. What are some key features of Truffle?

a) Automated contract testing, deployment, and migrations

b) Support for multiple programming languages

c) Integration with popular IDEs like Visual Studio Code

d) All of the above

29 / 30

29. What is scalability in the context of the blockchain trilemma?

a) The ability of blockchain networks to accommodate increasing numbers of users and transactions

b) The distribution of control and decision-making power among network participants

c) The prevention of unauthorized access to blockchain networks

d) The use of cryptographic techniques to secure data on the blockchain

30 / 30

30. What is RSA in cryptography?

a) A symmetric encryption algorithm

b) A hashing algorithm

c) An asymmetric encryption algorithm

d) A digital signature algorithm

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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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