Blockchain AKTU 2020-21 Question Paper

B.Tech

(SEM VII) THEORY EXAMINATION 2020-21

BLOCKCHAIN ARCHITECTURE DESIGN

[Time: 3:00 Hours] Total Marks: 70

Note: Attempt all Sections. If require any missing data: then choose suitably.

SECTION-A

  1. Attempt all questions in brief.                                                                                  2 x 7 = 14
    1. What are the different types of Blockchains?
    2. Define Cryptocurrency.
    3. What is a genesis block?
    4. What are Merkle trees? How important are Merkle trees in Blockchains?
    5. Differentiate between Blockchain and Hyperledger.
    6. What are the properties of Blockchain?
    7. What are the different types of tokens?

SECTION-B

2. Attempt any three questions in brief.                                                                     7 x 3 = 21

  1. How will you handle the risk management when it comes to securing the transactions records?
  2. Explain the key principles in Blockchain that are helpful in eliminating the security threats that needs to be followed?
  3. What is the difference between off-chain transactions and on-chain transactions?
  4. Explain the major elements of the Blockchain ecosystem in detail?
  5. What are the different types of Blockchains? Also Explain why a blockchain needs tokens to operate.

SECTION-C

3. Attempt any one part of the following:                                                                                            7 x 1 = 7

  1. How is Blockchain distributed ledger different from a traditional ledger?
  2. What is a Dapp and how is it different from a normal application?

4. Attempt any one part of the following:                                                                                            7 x 1 = 7

  1. Explain the steps that are involved in the Blockchain project implementaion.
  2. What are function modifiers in Solidity? Mention the most widely used modifiers.

5. Attempt any one part of the following:                                                                                            7 x 1 = 7

  1. List and explain the parts of EVM memory.
  2. Explain Blockchain Architecture in detail.

6. Attempt any one part of the following:                                                                                            7 x 1 = 7

  1. What is Consensus algorithm? Explain the types of Consensus algorithm.
  2. What is the difference between Blockchain and database?

7. Attempt any one part of the following:                                                                                            7 x 1 = 7

  1. What are the limitations of blockchain? Explain in detail.
  2. Which cryptographic algorithm is used in Blockchain? Explain in detail.

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