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NPTEL Blockchain and its Applications Assignment 7 Answers 2023:
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Q.1. Which statement(s) is/are false for practical distributed decentralized network assumptions:
- a. Communication channel can be unreliable
- b. The network may not be fully Connected
- c. Receivers can not always know the identity of the Senders
- d. None of the above
Q.2. Which of the following is/are true for PBFT (Practical Byzantine Fault Tolerance)
- a. PBFT gives priority to safety over liveliness.
- b. Use digital signature
- c. Based on State machine replication
- d. In general low overhead is associated
Q.3. PBFT can use cryptographic techniques for authentication and authorization
- a. True
- b. False
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Q.4. Which of the following is/are true for the view in PBFT?
- a. One replica in a view is considered as the primary (works like a
- b. The primary proposes a value, and the backups accept the value Acceptors)
- c. When the primary is detected as faulty, the view is changed and a new leader/primary is elected.
- d. Only the messages from the current view are accepted
Q.5. Is Hyperledger Fabric used for invoking smart contracts in public blockchain in its basic form?
- a. True
- b. False
Q.6. Which of the following is an open source, enterprise-grade Permissioned DLT platform
- a. Hyperledger Explorer
- b. Hyperledger Burrow
- c. Hyperledger Fabric
- d. Hyperledger Indy
Q.7. Which of the following abstractions in Hyperledger Fabric provide confidentiality to individual ledgers?
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Q.8. Suppose there are 5 channels present in a Hyperledger Fabric network, each of them has access to 3 chaincodes A, B and C. How many containers will run in each peer for running this system?
- a. 5
- b. 1
- c. 3
- d. 15
Q.9. Hyperledger Fabric allows any consensus to be plugged inko ensure a high degree of trustworthiness True or False
- a True
- b. False
Q.10. Which of the following(s) is/are benefits of Blockchain for Business?
- a. Reduced transaction time from days to near instantaneous
- b. Removes intermediaries overheads and cost
- c. Enables New Business Models such as loT Integration into supply chain
- d. All of the these
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About NPTEL Blockchain and its Applications Course:
In the last few years, Blockchain technology has generated massive interest among governments, enterprises, and academics, because of its capability of providing a transparent, secured, tamper-proof solution for interconnecting different stakeholders in a trustless setup. In January 2021, the Ministry of Electronics and Information Technology (MeiTY), Government of India, published the first draft of the “National Strategy on Blockchain” that highlights 17 potential applications that are of national interest.
Course Layout:
- Week 1: Introduction to Blockchain Technology and its Importance
- Week 2: Basic Crypto Primitives I – Cryptographic Hash
- Week 3: Basic Crypto Primitives II – Digital Signature
- Week 4: Evolution of the Blockchain Technology
- Week 5: Elements of a Blockchain
- Week 6: Blockchain Consensus I – Permissionless Models
- Week 7: Blockchain Consensus II – Permissioned Models
- Week 8: Smart Contract Hands On I – Ethereum Smart Contracts (Permissionless Model)
- Week 9: Smart Contract Hand On II – Hyperledger Fabric (Permissioned Model)
- Week 10: Decentralized Identity Management
- Week 11: Blockchain Interoperability
- Week 12: Blockchain Applications
CRITERIA TO GET A CERTIFICATE:
Average assignment score = 25% of average of best 8 assignments out of the total 12 assignments given in the course.
Exam score = 75% of the proctored certification exam score out of 100
Final score = Average assignment score + Exam score
YOU WILL BE ELIGIBLE FOR A CERTIFICATE ONLY IF AVERAGE ASSIGNMENT SCORE >=10/25 AND EXAM SCORE >= 30/75. If one of the 2 criteria is not met, you will not get the certificate even if the Final score >= 40/100.
If you have not registered for exam kindly register Through https://examform.nptel.ac.in/
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