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 Elliptic Curve Cryptography (ECC)? a) A symmetric encryption algorithm b) A hashing algorithm c) An asymmetric encryption algorithm d) A digital signature algorithm 2 / 30 2. Why might an industry group choose to implement a consortium blockchain? a) To ensure complete public transparency b) To allow any user to join and participate c) To share information securely among a group of trusted entities d) To eliminate the need for consensus mechanisms 3 / 30 3. Which hashing algorithm is commonly used in Bitcoin? a) MD5 b) SHA-1 c) SHA-256 d) AES 4 / 30 4. What is the main purpose of SHA-256 in blockchain? a) To encrypt transaction data b) To generate digital signatures c) To create unique identifiers for blocks and transactions d) To decrypt encrypted data 5 / 30 5. What is the primary advantage of a private blockchain over a public blockchain? a) Complete decentralization b) Higher transparency c) Enhanced privacy and control d) Unlimited number of nodes 6 / 30 6. What are some challenges associated with asset tokenization? a) Legal and regulatory complexities b) Lack of standardized frameworks and guidelines c) Custody and security concerns for digital assets d) All of the above 7 / 30 7. Which characteristic is crucial for a cryptographic hash function? a) Deterministic b) Slow c) Easily reversible d) Consumes large amounts of memory 8 / 30 8. What is the current block reward for mining a new block in the Bitcoin network? a) 6.25 BTC b) 10 BTC c) 25 BTC d) 50 BTC 9 / 30 9. 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 10 / 30 10. 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 11 / 30 11. 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 12 / 30 12. How does blockchain enhance the security of patient data in healthcare? a) By encrypting data with traditional encryption methods b) By decentralizing storage and access to patient data c) By centralizing control over patient data with healthcare providers d) By restricting access to patient data through closed networks 13 / 30 13. What is a key use case of blockchain technology in voting and governance? a) Securing personal data of government officials b) Automating government bureaucracy c) Enhancing transparency and integrity of elections d) Providing real-time access to government services 14 / 30 14. Who is credited with the creation of Bitcoin? a) Vitalik Buterin b) Charlie Lee c) Hal Finney d) Satoshi Nakamoto 15 / 30 15. Which public blockchain introduced the concept of smart contracts? a) Bitcoin b) Ethereum c) Ripple d) Hyperledger Fabric 16 / 30 16. What is the purpose of the Bitcoin blockchain? a) To record transactions of various cryptocurrencies b) To provide a platform for decentralized applications c) To serve as a digital currency for online transactions d) To provide a decentralized ledger for recording and verifying Bitcoin transactions 17 / 30 17. What distinguishes DApps from traditional centralized applications? a) DApps are controlled by a single entity, while traditional applications are decentralized b) DApps rely on blockchain technology for data storage and processing, while traditional applications use centralized servers c) DApps are faster and more scalable than traditional applications d) DApps require users to have specialized hardware to access them 18 / 30 18. What is the main advantage of a public blockchain? a) Centralized control b) High transaction speed c) Transparency and decentralization d) Low energy consumption 19 / 30 19. 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 20 / 30 20. How does Proof of Stake (PoS) contribute to energy efficiency in blockchain networks? a) By requiring participants to solve energy-intensive cryptographic puzzles b) By increasing the computational complexity of transaction validation c) By restricting access to blockchain networks to a select group of participants d) By minimizing the need for energy-intensive mining activities 21 / 30 21. How do cryptocurrencies enable secure and transparent transactions? a) By relying on centralized servers for transaction processing b) By using cryptographic techniques and blockchain technology c) By storing user data on public databases d) By requiring users to disclose personal information for every transaction 22 / 30 22. In a private blockchain, who typically has permission to validate transactions? a) Any user on the internet b) A pre-selected group of participants c) Only the network owner d) Anonymous users 23 / 30 23. What is the environmental impact of Proof of Work (PoW) consensus mechanism? a) Minimal environmental impact due to efficient energy usage b) Significant environmental impact due to high energy consumption and carbon emissions c) Neutral environmental impact as it does not rely on energy consumption d) Positive environmental impact by promoting renewable energy usage 24 / 30 24. 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 25 / 30 25. Which blockchain framework is specifically designed for developing private and consortium blockchains? a) Ethereum b) Corda c) Hyperledger Fabric d) Truffle 26 / 30 26. 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 27 / 30 27. What is the primary function of RSA in blockchain? a) To create hashes for data integrity b) To encrypt transaction data c) To generate and verify digital signatures d) To compress blockchain data 28 / 30 28. What is the primary factor that determines the security of ECC? a) Key size b) Algorithm complexity c) Computational resources d) Elliptic curve parameters 29 / 30 29. 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 30 / 30 30. In Proof of Authority (PoA) networks, how are validators typically selected and authorized? a) Through a random selection process b) Based on the amount of cryptocurrency they hold or stake c) By a centralized authority or governance process d) Through a proof of identity verification mechanism 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
