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 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 2 / 30 2. What are some examples of decentralized applications (DApps)? a) Decentralized exchanges (DEXs) b) Decentralized finance (DeFi) platforms c) Decentralized social media networks d) All of the above 3 / 30 3. What is staking in the context of blockchain? a) Holding cryptocurrency in a wallet b) Selling cryptocurrency on an exchange c) Donating cryptocurrency to a charity d) Locking up cryptocurrency as collateral to participate in the network and earn rewards 4 / 30 4. What is the primary feature of EOS that distinguishes it from other blockchain platforms? a) Higher transaction throughput b) Use of the Delegated Proof of Stake (DPoS) consensus algorithm c) Turing completeness of its smart contracts d) Integration with existing financial systems 5 / 30 5. 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 6 / 30 6. What is Cardano? a) A blockchain network designed for decentralized applications (DApps) b) A digital currency similar to Bitcoin c) A consensus algorithm used in blockchain networks d) A cryptocurrency wallet 7 / 30 7. What is the output of a hashing function typically called? a) Key pair b) Hash value or digest c) Ciphertext d) Encrypted message 8 / 30 8. What is the primary use case of cryptocurrencies? a) Storing personal data securely b) Facilitating digital payments and transactions c) Decentralizing social media networks d) Providing cloud storage solutions 9 / 30 9. What is the purpose of mining rewards in blockchain? a) To incentivize miners to secure and validate transactions b) To fund blockchain development projects c) To pay transaction fees d) To penalize miners for malicious behavior 10 / 30 10. How can anyone participate in a public blockchain? a) By receiving special permission from network administrators b) By installing the blockchain software and connecting to the network c) By paying a subscription fee d) By joining an invitation-only group 11 / 30 11. 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 12 / 30 12. 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 13 / 30 13. 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 14 / 30 14. What does it mean for a hash function to be "collision-resistant"? a) It can be easily reversed b) It produces the same output for different inputs c) It is hard to find two different inputs that produce the same output d) It requires less computational power 15 / 30 15. 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 16 / 30 16. What is the purpose of an ICO? a) To raise funds for blockchain projects b) To distribute rewards to network participants c) To facilitate peer-to-peer lending d) To provide liquidity to decentralized exchanges 17 / 30 17. Who is credited with the creation of Bitcoin? a) Vitalik Buterin b) Charlie Lee c) Hal Finney d) Satoshi Nakamoto 18 / 30 18. What is the integration of blockchain with IoT primarily aimed at achieving? a) Increasing energy consumption in IoT devices b) Enhancing data security and integrity in IoT networks c) Decreasing the interoperability of IoT devices d) Reducing the complexity of IoT architectures 19 / 30 19. 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 20 / 30 20. What makes Elliptic Curve Cryptography (ECC) efficient compared to other cryptographic algorithms? a) It uses larger key sizes b) It requires fewer computational resources for the same level of security c) It relies on symmetric encryption d) It does not support digital signatures 21 / 30 21. What is the primary drawback of Proof of Authority (PoA) compared to Proof of Work (PoW) in terms of decentralization? a) PoA requires less computational power, resulting in a lower barrier to entry for validators b) PoA relies on a centralized authority to authorize validators, reducing decentralization c) PoA allows for faster transaction processing, increasing network efficiency d) PoA eliminates the need for mining, reducing energy consumption 22 / 30 22. 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 23 / 30 23. What is a stale block in mining? a) A block that contains invalid transactions b) A block that is not accepted by the majority of nodes c) A block that is no longer part of the longest valid chain d) A block that has been successfully mined but not included in the blockchain 24 / 30 24. 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 25 / 30 25. What is the root of a Merkle tree called? a) Block header b) Hash root c) Merkle root d) Leaf node 26 / 30 26. 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 27 / 30 27. 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 28 / 30 28. What is a hash function in the context of blockchain? a) A function that encrypts data b) A function that generates a fixed-size string from input data c) A function that connects blocks d) A function that stores user information 29 / 30 29. 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 30 / 30 30. 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 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
