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 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 EOS? a) A blockchain network designed for cross-border payments b) A digital currency similar to Bitcoin c) A blockchain platform for decentralized applications (DApps) d) A cryptocurrency wallet 2 / 30 2. What role does the nonce play in mining? a) It is the block reward received by miners b) It is a unique identifier for each block c) It is a parameter used to adjust the difficulty level of mining d) It is a random number miners modify to solve the cryptographic puzzle 3 / 30 3. What is a Decentralized Application (DApp)? a) A software application that runs on a centralized server b) A software application that runs on a decentralized network of computers c) A type of cryptocurrency d) A consensus algorithm used in blockchain networks 4 / 30 4. What is a key use case of blockchain technology in healthcare? a) Securing patient data and medical records b) Enhancing hospital infrastructure c) Providing medical diagnosis and treatment d) Managing supply chain logistics 5 / 30 5. What is a Merkle tree in blockchain technology? a) A structure for storing user identities b) A type of smart contract c) A data structure that efficiently summarizes and verifies the integrity of large sets of data d) A method for encrypting blockchain data 6 / 30 6. Which of the following is an example of a public blockchain? a) Hyperledger b) Bitcoin c) Corda d) Quorum 7 / 30 7. How does blockchain technology prevent unauthorized access to data? a) By centralizing control over data access b) By encrypting data with traditional encryption methods c) By distributing data across a decentralized network with cryptographic protection d) By restricting access to data through closed networks 8 / 30 8. What is RSA in cryptography? a) A symmetric encryption algorithm b) A hashing algorithm c) An asymmetric encryption algorithm d) A digital signature algorithm 9 / 30 9. What is the term used to describe the situation where multiple miners successfully mine a new block almost simultaneously? a) Collision b) Fork c) Stalemate d) Orphan 10 / 30 10. What is the primary purpose of hashing in blockchain? a) To encrypt data b) To create a fixed-size output from variable input data c) To generate public and private keys d) To manage user identities 11 / 30 11. 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 12 / 30 12. What is the role of the mempool in the Bitcoin network? a) To store unconfirmed transactions waiting to be included in blocks b) To mine new blocks and add them to the blockchain c) To verify the authenticity of transactions d) To distribute transaction fees to network participants 13 / 30 13. 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 14 / 30 14. 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 15 / 30 15. How does blockchain technology address concerns of voter fraud and manipulation? a) By centralizing control over voting systems b) By increasing anonymity of voter identity c) By decentralizing storage and verification of voting data d) By limiting access to voting systems 16 / 30 16. 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 17 / 30 17. Which hashing algorithm is commonly used in Bitcoin? a) MD5 b) SHA-1 c) SHA-256 d) AES 18 / 30 18. What is a validator in the context of blockchain? a) A participant who secures the network by solving cryptographic puzzles b) An entity responsible for verifying the authenticity of transactions and adding them to the blockchain c) A node that participates in the consensus process by proposing and validating blocks d) A type of cryptographic algorithm used for encryption 19 / 30 19. 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 20 / 30 20. How does blockchain technology impact the efficiency of real estate title searches? a) Blockchain decreases the efficiency of real estate title searches by complicating the process b) Blockchain increases the efficiency of real estate title searches by providing instant access to property records c) Blockchain has no impact on the efficiency of real estate title searches d) Blockchain only benefits property owners, not real estate professionals 21 / 30 21. 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 22 / 30 22. What are some benefits of asset tokenization? a) Increased liquidity and accessibility to asset ownership b) Lower transaction costs and faster settlement times c) Enhanced transparency and security through blockchain technology d) All of the above 23 / 30 23. What is the purpose of a transaction fee in Bitcoin? a) To reward miners for their work in securing the network b) To discourage users from making transactions c) To fund blockchain development projects d) To compensate wallet providers for storing Bitcoin 24 / 30 24. Which blockchain platform introduced the concept of smart contracts? a) Bitcoin b) Ethereum c) Ripple d) Litecoin 25 / 30 25. 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 26 / 30 26. Which scenario is best suited for a hybrid blockchain? a) A global cryptocurrency platform b) A public voting system c) A supply chain with public and private data needs d) A single company's internal ledger 27 / 30 27. What is the role of consensus mechanisms in blockchain-based voting systems? a) Consensus mechanisms regulate access to voting systems b) Consensus mechanisms determine the outcome of elections c) Consensus mechanisms ensure agreement on the validity of transactions d) Consensus mechanisms are not relevant to blockchain-based voting systems 28 / 30 28. How do smart contracts improve efficiency in legal contract execution? a) Smart contracts increase the complexity of legal contracts b) Smart contracts reduce the need for human intervention in contract execution c) Smart contracts limit the enforceability of legal contracts d) Smart contracts hinder transparency in legal contract processes 29 / 30 29. What happens if the hash of a blockchain transaction does not match the hash derived from the digital signature verification? a) The transaction is accepted b) The transaction is discarded c) The transaction is re-encrypted d) The transaction is sent for manual review 30 / 30 30. 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 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 Share the above MCQs: Click to share on Facebook (Opens in new window) Facebook Click to share on WhatsApp (Opens in new window) WhatsApp Click to share on X (Opens in new window) X Click to share on LinkedIn (Opens in new window) LinkedIn Click to share on Reddit (Opens in new window) Reddit
