Home» Online Test » Technology » Blockchain Technology Online Test 0% Sorry, time's up. To complete the online test, please restart it. 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 Do not refresh the page! 👍 All the best! 1 / 30 1. What is the role of smart contracts in DApps? a) Smart contracts provide a user interface for interacting with the application b) Smart contracts execute predefined rules and conditions governing the operation of the application c) Smart contracts act as a consensus mechanism for validating transactions d) Smart contracts serve as a centralized database for storing application data 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 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 4 / 30 4. 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 5 / 30 5. What are some risks associated with participating in ICOs? a) Lack of regulation and investor protection b) Potential for scams and fraudulent projects c) Volatility and price fluctuations of ICO tokens d) All of the above 6 / 30 6. Which of the following is an example of a public blockchain platform? a) Hyperledger Fabric b) Corda c) Ethereum d) Quorum 7 / 30 7. How does a hybrid blockchain provide flexibility in data management? a) By having no access controls b) By enabling certain data to be public and other data to be private c) By requiring a single administrator d) By allowing all data to be public 8 / 30 8. What is the role of a whitepaper in the context of ICOs? a) A legal document outlining the terms and conditions of the token sale b) A technical document explaining the underlying technology and project roadmap c) A marketing document promoting the benefits of investing in the ICO d) All of the above 9 / 30 9. Which consensus mechanism commonly utilizes mining as a means of achieving agreement on the state of the blockchain? a) Proof of Stake (PoS) b) Proof of Authority (PoA) c) Delegated Proof of Stake (DPoS) d) Proof of Work (PoW) 10 / 30 10. What role does ECC play in securing private keys in blockchain? a) It encrypts the private keys b) It hashes the private keys c) It generates the private keys d) It signs the private keys 11 / 30 11. What are some challenges associated with implementing blockchain in voting and governance? a) Lack of public trust in blockchain technology b) Regulatory uncertainty and legal challenges c) Complexity of integrating blockchain with existing voting systems d) All of the above 12 / 30 12. What is Hyperledger Fabric? a) A decentralized cryptocurrency platform b) A blockchain framework for developing enterprise-grade applications c) A type of consensus algorithm used in the Ripple network d) A digital currency similar to Bitcoin 13 / 30 13. What is a block reward in the context of mining? a) A fee paid by users for transaction processing b) The reward given to miners for solving a cryptographic puzzle and adding a new block to the blockchain c) The penalty imposed on miners for attempting to manipulate the blockchain d) The cost of electricity consumed during the mining process 14 / 30 14. What impact does blockchain have on fractional ownership of real estate? a) Blockchain decreases accessibility to fractional ownership opportunities b) Blockchain increases barriers to entry for fractional ownership c) Blockchain democratizes fractional ownership by providing transparent and efficient platforms d) Blockchain has no impact on fractional ownership of real estate 15 / 30 15. Who is credited with the creation of Bitcoin? a) Vitalik Buterin b) Charlie Lee c) Hal Finney d) Satoshi Nakamoto 16 / 30 16. How does staking contribute to the security of Proof of Stake (PoS) blockchain networks? a) By increasing the number of validators participating in the consensus process b) By requiring validators to solve complex mathematical puzzles c) By distributing rewards evenly among network participants d) By centralizing control of the network in the hands of a few validators 17 / 30 17. What is one of the main uses of private blockchains? a) Public data sharing b) Cryptocurrencies c) Enterprise-level applications d) Decentralized social networks 18 / 30 18. Which public blockchain introduced the concept of smart contracts? a) Bitcoin b) Ethereum c) Ripple d) Hyperledger Fabric 19 / 30 19. What is the term used to describe the computational power contributed by a miner to the network? a) Mining power b) Hash rate c) Network strength d) Block difficulty 20 / 30 20. What is an Initial Coin Offering (ICO)? a) A method of fundraising where investors purchase shares of a company b) A type of cryptocurrency exchange c) A regulatory body overseeing blockchain projects d) A method of crowdfunding where new cryptocurrency tokens are offered to investors 21 / 30 21. What is the role of delegates in Delegated Proof of Stake (DPoS) networks? a) To mine new blocks by solving cryptographic puzzles b) To verify transactions and add them to the blockchain c) To participate in the consensus process and validate transactions on behalf of token holders d) To distribute rewards to network participants 22 / 30 22. Why is the hash of each block's data combined with the hash of the previous block's header in a blockchain? a) To increase block size b) To ensure data encryption c) To maintain the integrity and chronological order of the blockchain d) To allow easy reversal of transactions 23 / 30 23. How does blockchain technology protect against data tampering? a) By allowing unrestricted editing of data records b) By implementing centralized data storage systems c) By utilizing cryptographic hashing to create immutable data records d) By relying on single points of failure in data storage 24 / 30 24. What is Hardhat? a) A digital currency similar to Bitcoin b) A blockchain platform for building decentralized applications (DApps) c) A development environment and task runner for Ethereum smart contracts d) A consensus algorithm used in blockchain networks 25 / 30 25. What role does a public key play in verifying a digital signature? a) It encrypts the signature b) It hashes the data c) It verifies the authenticity of the digital signature d) It decrypts the original data 26 / 30 26. What is the potential impact of blockchain on healthcare data management? a) Blockchain increases the risk of data breaches in healthcare b) Blockchain improves the efficiency and integrity of healthcare data management c) Blockchain restricts access to healthcare data for patients and providers d) Blockchain has no impact on healthcare data management 27 / 30 27. Which programming language is commonly used for writing smart contracts in Remix? a) Solidity b) JavaScript c) Python d) Java 28 / 30 28. 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 29 / 30 29. 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 30 / 30 30. What are some examples of DeFi applications? a) Decentralized exchanges (DEXs) b) Lending and borrowing platforms c) Automated market makers (AMMs) d) All of the above Please provide accurate information so we can send your Achievement Certificate by mail. NameEmailPhone Number Your score is Share your achievement! LinkedIn Facebook Twitter 0% Restart Test Please provide your feedback. Thank you for your valuable feedback. Send feedback Buy Blockchain Technology MCQ PDF for Offline Study
