Cryptocurrency and Blockchain Technologies (CCS339) model question paper

 Cryptocurrency and Blockchain Technologies (CCS339) Model question paper 

Part A (20 marks)

Answer all questions.

1. What is a blockchain and how does it function as a public ledger?
2. Explain the properties of a cryptographic hash function.
3. What is a hash pointer and how is it used in a Merkle tree?
4. Define double spending in the context of cryptocurrencies.
5. What is Bitcoin's Proof of Work (PoW) and how does it secure the network?
6. Describe the concept of a Bitcoin mining pool.
7. What is Ethereum's Gas and how does it relate to transaction fees?
8. Explain the purpose of smart contracts in blockchain technology.
9. What are decentralized applications (DApps)?
10. Give an example of a blockchain application in supply chain management.

Part B (65 marks)


1. a) Describe the structure of a block in a blockchain and explain the concept of the longest chain. (13 marks)
   
   b) Explain the permissioned model of blockchain and its potential applications. (13 marks)

2. a) Discuss the creation of coins in a basic cryptocurrency and the mechanisms to prevent double spending. (13 marks)
   
   b) Explain Bitcoin's P2P network and the process of transaction propagation within the network. (13 marks)


3. a) Compare and contrast Proof of Work (PoW) with Proof of Stake (PoS) consensus mechanisms. (13 marks)
   
   b) Describe the challenges and solutions related to mining difficulty and the monopoly problem in Bitcoin mining. (13 marks)


4. a) Explain the architecture of Hyperledger Fabric v1.1 and the role of chain code. (13 marks)
  
   b) Discuss the key components of the Ethereum network and their functions, including EVM, Mist Browser, and Solidity. (13 marks)

5. a) Discuss the role of blockchain technology in transforming the finance and banking sector with examples. (13 marks)
   
   b) Explain the concept of Non-Fungible Tokens (NFTs) and their impact on digital asset ownership. (13 marks)
 Part C (15 marks)

Answer any one question

1. Describe the process of developing and deploying a smart contract using Truffle. Highlight the potential challenges and solutions. (15 marks)
   
2. Analyze the impact of blockchain applications on logistics and smart cities. Provide case studies to support your answer. (15 mark)

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