NPTEL Blockchain and its Applications Week 12 Assignment Answers 2025
1. How does the use of blockchain technology enhance the management of Land Registry records?
a) Blockchain eliminates the need for physical land titles by storing them in a centralized digital
ledger.
b) Blockchain ensures that land records can be accessed by any government entity at any time
without restrictions.
c) Blockchain prevents fraud in land transactions by providing a secure, transparent, and
immutable record of ownership.
d) Blockchain allows land records to be altered instantly without the need for a verification
process by authorities
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2. Which of the following is/are advantages of blockchain?
a) Provides decentralized platforms and marketplace
b) Requires intermediaries for verification
c) Limited scalability
d) Better transparency
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3. Which of the following is an essential feature of federated voting?
a) It requires a central authority to validate votes
b) Nodes vote independently without needing majority approval to win
c) A majority of nodes’ votes determine the outcome
d) All nodes must agree unanimously for a decision to be accepted
Answer :-
4. Which of the following was/were NOT utilized in Singapore’s Project Ubin to enhance interbank
settlements?
a) Distributed Ledger Technology
b) Tokenization of the Singapore Dollar (SGD) for digital representation.
c) cross-border payments
d) Proof-of-work (PoW) consensus mechanism to validate transactions
Answer :-
5. Which type of attack allows an attacker to create multiple fake identities to gain unauthorized access to consortium services?
a) Byzantine faults
b) Sybil attacks
c) DDoS attacks
d) Sensitive information leakage
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6. To allocate consumer requests among Service Providers, which of the following scheduling algorithms is implemented?
a) Fair Scheduling Algorithm
b) Capacity Scheduling Algorithm
c) Dynamic Round Robin
d) A* Algorithm
Answer :-
7. Which of the following are key advantages of Hyperledger?
a) It is open-source
b) The identities of the participants can be accessed by any outsider
c) It supports private channels
d) It is exclusively designed for public blockchain
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8. Quorum, an enterprise-focused blockchain platform based on Ethereum, supports transaction
management with privacy enhancements. Which type of state can Quorum handle during a
transaction?
a) Only private state
b) Only public state
c) Both private and public state at the same time
d) Either private or public state for a transaction
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9. What feature of blockchain helps prevent fraud in decentralized marketplaces?
a) Central authority
b) Smart contracts
c) Manual validation
d) Third-party monitoring
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10. What does a “man-in-the-middle” attack do in a decentralized marketplace?
a) Changes in the price of goods in the marketplace
b) Intercepts and alters messages between users
c) Steals cryptocurrency directly from wallets
d) Prevents users from accessing the marketplace
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