Blockchain and its Applications Assignment 7 Answers
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
Answer: d. None of the above
2) Which of the following is/are true for PBFT (Practical Byzantine Fault Tolerance)
a. PBFT gives priority to safety over liveness.
b. Use digital signature
c. Based on State machine replication
d. In general low overhead is associated
Answer: a, b, c, d
3. PBFT can use cryptographic techniques for authentication and authorization.
a. True
b. False
Answer: a. True
5) Is Hyperledger Fabric used for involving smart contracts in public blockchain in its basic form?
a. True
b. False
Answser: b
9) Hyperledger Fabric allows any consensus to be plugged in to ensure a high degree of trustworthiness. True or False
a. True
b. False
Answer: a. True
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 IoT integration into supply chain
d. All of the these
Answer: d. All of the these
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