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 are some advantages of using Remix for Ethereum smart contract development? a) Accessibility from any web browser b) Built-in Solidity compiler and debugger c) Integration with Ethereum test networks d) All of the above 2 / 30 2. What is a mining pool in blockchain? a) A physical location where miners gather to mine cryptocurrencies b) A group of miners who combine their computational resources to increase their chances of successfully mining blocks and share the rewards c) A software tool used by miners to manage their mining operations d) A decentralized network of mining nodes 3 / 30 3. What is the primary focus of Hyperledger Fabric? a) Supporting decentralized finance applications b) Facilitating cross-border payments c) Enabling supply chain management solutions d) Providing tools for developing enterprise-grade blockchain applications 4 / 30 4. What connects each block to the previous one in a blockchain? a) A timestamp b) A cryptographic hash of the previous block c) The user's signature d) The transaction ID 5 / 30 5. 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 6 / 30 6. 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 7 / 30 7. 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 8 / 30 8. 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 9 / 30 9. What is Stellar? a) A decentralized cryptocurrency platform b) A digital currency similar to Bitcoin c) A blockchain network designed for cross-border payments and remittances d) A consensus algorithm used in blockchain networks 10 / 30 10. How does a private blockchain ensure faster transaction processing compared to a public blockchain? a) By reducing the number of nodes involved in consensus b) By using more complex algorithms c) By eliminating transaction fees d) By allowing anyone to validate transactions 11 / 30 11. What is the role of network consensus in ensuring blockchain security? a) Network consensus increases the risk of data manipulation in blockchain networks b) Network consensus ensures transparency and integrity of transactions in blockchain networks c) Network consensus restricts access to blockchain networks d) Network consensus has no impact on blockchain security 12 / 30 12. What is the function of the timestamp in a block header? a) To record the current time when the block is mined b) To determine the difficulty level of mining c) To identify the miner who mined the block d) To encrypt transaction data 13 / 30 13. Which mathematical concept forms the basis of Elliptic Curve Cryptography (ECC)? a) Prime numbers b) Elliptic curves over finite fields c) Matrix multiplication d) Fibonacci sequence 14 / 30 14. What role does cryptography play in blockchain security? a) Cryptography increases the complexity of blockchain networks b) Cryptography ensures transparency of blockchain transactions c) Cryptography provides secure and verifiable data encryption and authentication d) Cryptography has no impact on blockchain security 15 / 30 15. What is the purpose of tokenization in DApps? a) To create a centralized system for controlling access to the application b) To facilitate transactions and incentivize user participation c) To increase the speed and scalability of the application d) To reduce the security risks associated with decentralized networks 16 / 30 16. What is Delegated Proof of Stake (DPoS)? a) A consensus algorithm where participants are rewarded based on the amount of cryptocurrency they hold or stake b) A mechanism for selecting the next block proposer in a blockchain network c) A consensus algorithm where participants vote for a limited number of delegates to validate transactions on their behalf d) A cryptographic algorithm used for digital signatures 17 / 30 17. What is the role of public and private keys in blockchain security? a) Public and private keys regulate access to blockchain networks b) Public and private keys ensure transparency of blockchain transactions c) Public and private keys provide secure and verifiable data encryption and authentication d) Public and private keys are not relevant to blockchain security 18 / 30 18. Which characteristic is crucial for a cryptographic hash function? a) Deterministic b) Slow c) Easily reversible d) Consumes large amounts of memory 19 / 30 19. Which blockchain network is known for its support of Turing-complete smart contracts? a) Bitcoin b) Ethereum c) Ripple d) Stellar 20 / 30 20. What is the difference between an ICO and a traditional Initial Public Offering (IPO)? a) ICOs are regulated by government agencies, while IPOs are not b) ICOs involve the sale of cryptocurrency tokens, while IPOs involve the sale of company shares c) ICOs are open to retail investors, while IPOs are restricted to institutional investors d) ICOs are more transparent and secure than IPOs 21 / 30 21. 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 22 / 30 22. What is the primary advantage of Ethereum over traditional contract execution methods? a) Lower security risks b) Faster execution times c) Higher level of decentralization d) Greater transparency and auditability 23 / 30 23. 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 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. How does blockchain technology impact the auditability of election results? a) Blockchain decreases auditability by obfuscating voting data b) Blockchain increases auditability by providing transparent and immutable records of votes c) Blockchain has no impact on auditability of election results d) Blockchain only benefits government officials during audits 26 / 30 26. What is a primary advantage of a consortium blockchain? a) Complete transparency to the public b) High decentralization c) Controlled access and faster transactions d) No need for consensus mechanisms 27 / 30 27. What is the primary advantage of Proof of Stake (PoS) over Proof of Work (PoW) in terms of environmental impact? a) PoS requires less computational power, resulting in lower energy consumption b) PoS allows for faster transaction processing, reducing energy usage c) PoS eliminates the need for mining, reducing the environmental impact d) PoS uses renewable energy sources for validation, reducing carbon emissions 28 / 30 28. Which blockchain platform introduced the concept of smart contracts? a) Bitcoin b) Ethereum c) Ripple d) Litecoin 29 / 30 29. When was Bitcoin first introduced? a) 2007 b) 2008 c) 2009 d) 2010 30 / 30 30. What type of blockchain would be most suitable for a supply chain management system within a single company? a) Public blockchain b) Private blockchain c) Hybrid blockchain d) Consortium blockchain Please provide accurate information so we can send your Achievement Certificate by mail. NameEmailPhone Number Your score is Share your achievement! 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