Blockchain and its Applications | Week 12
Session: JAN-APR 2024
Course Name: Blockchain and its Applications
Course Link: Click Here
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These are Blockchain and its Applications Assignment 12 Answers
Q1. What of the following Indy transaction inserts a DID record in the Indy ledger
a. INSERT
b. INSERTDID
c. NYM
d. CREATE
Answer: c. NYM
Q2. Ubin project is based on Blockchain and Distributed Ledger Technology (DLT) for clearing and settlement of payments and securities
a. True
b. False
Answer: a. True
These are Blockchain and its Applications Assignment 12 Answers
Q3. Does the information transferred to consumer: Consortium information such as catalog, pricing, etc.
a. Not sensitive
b. Sensitive
Answer: b. Sensitive
Q4. How does an application program interact with the Fabric network?
a. Application program runs chaincodes which commit data to the ledger.
b. Application program connects to the Orderer(s) to interact with the Fabric network.
c. Application program uses the Fabric SDK to connect to a Fabric Peer which in turn connects to the Fabric network.
d. Application program directly connects to a particular Fabric Channel in the network.
Answer: c. Application program uses the Fabric SDK to connect to a Fabric Peer which in turn connects to the Fabric network.
These are Blockchain and its Applications Assignment 12 Answers
Q5. What is the correct order of phases in Project Ubin?
i. Cross-border Payment versus Payment (PvP)
ii. Tokenized SGD
iii. Delivery versus Payment (DvP)
iv. Re-imagining RTGS
v. Enabling Broad Ecosystem Collaboration
a. i, ii, iii, iv, v
b. ii, iv, iii, i, v
c. ii, iii, v, vi, i
d. i, iii, v, ii, iv
Answer: d. i, iii, v, ii, iv
Q6. In which of the attacks, end-user consumers can create multiple accounts/identities for accessing the consortium services?
a. Byzantine faults
b. Sybil attacks
c. Impersonation attacks
d. Sensitive information Leakage
Answer: b. Sybil attacks
These are Blockchain and its Applications Assignment 12 Answers
Q7. When does Algorand reach a tentative consensus?
a. During strong synchrony only
b. During weak synchrony under partial network connectivity only
c. During both strong synchrony and weak synchrony
d. During weak synchrony under full network connectivity only
Answer: c. During both strong synchrony and weak synchrony
Q8. Quorum supports transactions with
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
Answer: d. Either private or public state for a transaction
These are Blockchain and its Applications Assignment 12 Answers
Q9. Which of the following is true about the selection of the random committee in the Algorand network?
a. There is a dedicated node which chooses the nodes to form the committee
b. A distributed algorithm decides the list of nodes participating in the committee
c. The nodes elect themselves as a committee member by winning a local computation
d. A specific pool of node choose are given the responsibility of forming the committee
Answer: c. The nodes elect themselves as a committee member by winning a local computation
Q10. What is the primary function of a channel in a Hyperledger Fabric network?
a. To validate and order transactions on the blockchain
b. To restrict access to specific participants in the network
c. To store the complete history of all transactions
d. To deploy and execute smart contracts
Answer: b. To restrict access to specific participants in the network
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These are Blockchain and its Applications Assignment 12 Answers
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Session: JAN-APR 2022
Course Name: Blockchain and its Applications
Course Link: Click Here
These are Blockchain and its Applications Assignment 12 Answers
Q1. Blockchain has been used in many Electronic Health Record based use cases.
a. False
b. True
Answer: b. True
Q2. In public blockchain the identity of the participants are not always known.
a. True
b. False
Answer: a. True
These are Blockchain and its Applications Assignment 12 Answers
Q3. Which of the following is/are advantages of blockchain?
a. Provides a decentralized platforms and marketplace
b. Can avoid intermediaries
c. Reduced cost of transactions
d. Better transparency
Answer: a, b, c, d
These are Blockchain and its Applications Assignment 12 Answers
Q4. Which of the following is/are true for federated voting?
a. Nodes participate in voting process
b. Keep on voting any valid statement
c. Accept when a majority votes
d. Confirm when the quorum unanimously accepts a statement
Answer: a, b, c, d
These are Blockchain and its Applications Assignment 12 Answers
Q5. Ubin project is based on Blockchain and Distributed Ledger Technology (DLT) for clearing and settlement of payments and securities
a. True
b. False
Answer: a. True
These are Blockchain and its Applications Assignment 12 Answers
Q6. In which of the attacks, end-user consumers can create multiple accounts/identities for accessing the consortium services?
a. Byzantine faults
b. Sybil attacks
c. Impersonation attacks
d. Sensitive information Leakage
Answer: b. Sybil attacks
These are Blockchain and its Applications Assignment 12 Answers
Q7. 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: a. Fair Scheduling Algorithm
These are Blockchain and its Applications Assignment 12 Answers
Q8. Quorum supports transactions with
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
Answer: d. Either private or public state for a transaction
These are Blockchain and its Applications Assignment 12 Answers
Q9. Which of the following is true about the selection of the random committee in the Algorand network?
a. There is a dedicated node which chooses the nodes to form the committee
b. A distributed algorithm decides the list of nodes participating in the committee
c. The nodes elect themselves as a committee member by winning a local computation
d. A specific pool of node choose are given the responsibility of forming the committee
Answer: c. The nodes elect themselves as a committee member by winning a local computation
These are Blockchain and its Applications Assignment 12 Answers
Q10. What are the advantages of Hyperledger?
a. Open source
b. Identities of parties must be known
c. Private channels
d. None of the above
Answer: a, c
These are Blockchain and its Applications Assignment 12 Answers
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