Blockchain and its Applications | Week 11
Course Name: Blockchain and its Applications
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These are Blockchain and its Applications Assignment 11 Answers
Q1. Hyperledger Aries is used for transmitting verifiable digital credentials.
a. False
b. True
Answer: b. True
Q2. Which of the following is true about Hypeledger Aries?
a. Aries cloud agent exposes API to access Aries capabilities
b. Aries controller implements application business logic
c. The controller sends requests
d. Response events are fed back to the controller as webhooks
Answer: a, b, c, d
These are Blockchain and its Applications Assignment 11 Answers
Q3. Which of the following is not a risk for blockchain operations?
a. 51% vulnerability
b. Private key security
c. Double spending
d. None of the above
Answer: d. None of the above
Q4. Selfish mining attacks cause forking problems in the network.
a. True
b. False
Answer: a. True
These are Blockchain and its Applications Assignment 11 Answers
Q5. Which of the following is/are true for Eclipse Attack.
a. The Attacker partitions miners
b. The attacker re-populates the victim node’s peer tables
c. The victim node restarts and loses current outgoing connections
d. The victim establishes all new outgoing connections to attacker IP addresses
Answer: a, b, c, d
Q6. Attacker can perform a front-running attack if he/she knows about upcoming transactions?
a. False
b. True
Answer: b. True
These are Blockchain and its Applications Assignment 11 Answers
Q7. Blockchain Trust is mainly controlled by which of the following?
a. Consensus
b. Immutability
c. Provenance
d. Finality
Answer: a, b, c, d
Q8. For defining enterprise-level blockchain, which of the below factors need to be analyzed?
a. Network
b. People
c. Assets
d. Transactions
Answer: a, b, c, d
These are Blockchain and its Applications Assignment 11 Answers
Q9. In which of the following cases a node stops responding?
a. Power failure
b. Network failure
c. Security updates
d. DoS attacks
Answer: a, b, c, d
These are Blockchain and its Applications Assignment 11 Answers
Q10. What is a major problem with Proof of Work in a large-scale network?
a. It is difficult to implement
b. It is Resource-intensive and consumes enormous amounts of power
c. Multiple miners have to be rewarded
d. It is unreliable
Answer: b. It is Resource-intensive and consumes enormous amounts of power
These are Blockchain and its Applications Assignment 11 Answers
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