# NPTEL Blockchain and its Applications Assignment 3 Answers 2023

#### ByBrokenprogrammers

Feb 9, 2023

Hello Learners, In this Post, you will find NPTEL Blockchain and its Applications Assignment 3 Week 3 Answers 2023. All the Answers are provided below to help the students as a reference don’t straight away look for the solutions.

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## NPTEL Blockchain and its Applications Assignment 3 Answers 2023:

#### Q.1. Bitcoin mining is performed by

• a. Miner nodes
• b. Internal Nodes
• c. External Nodes
• d. Orphan Nodes

• True
• False

#### Q.3. Which of the following is/are true for basic PoW consensus?

• a. Miner needs to propose a block
• b. The miner needs to solve a puzzle to obtain target block hash
• d. Successful miner node is rewarded

#### Q.4. Bitcoin Scripting Language:

• a. Not Turing Complete
• b. Supports Cryptography
• c. Stack Based
• d. Supports infinite time/memory

• True
• False

#### Q.6. What is nonce?

• a. The transaction id number
• b. A miners ASIC chip array
• c. The generator point used in elliptic curve cryptography
• d. The number miners run through to generate a correct hash

• a. OP POP
• b. OP_DEQUE
• c. OP DROP
• d. OP DELETE

#### Q.8. Which of these fields is present in a Bitcoin block summary?

• a. Difficulty
• b. Gas Used
• c. Gas Limit
• d. Private Key of the Sender

#### Q.9. If the four-byte difficulty bits in hex form are 0x1b0404cb, and the target value is calculated using X* 2^(Y), what is the values for X and Y respectively,

• a. X = 0x0404cb, Y = 0x1b
• b. X = 0x0404cb, Y = 0x18
• c. X = 0x0404cb, Y = 0xc0
• d. X = 0x1b0404, Y = 0xcb

#### Q.10.In bitcoin block header, the block identifier is calculated

• a. Using SHA256 on the current block header
• b. Using Double SHA256 on the previous block hash
• c. Using Double SHA256 on the Difficulty bits
• d. Using Double SHA256 on the current block header
##### NPTEL Blockchain and its Applications Assignment 3 Answers Join Group👇

Disclaimer: This answer is provided by us only for discussion purpose if any answer will be getting wrong don’t blame us. If any doubt or suggestions regarding any question kindly comment. The solution is provided by Brokenprogrammers. This tutorial is only for Discussion and Learning purpose.

#### About NPTEL Blockchain and its Applications Course:

In the last few years, Blockchain technology has generated massive interest among governments, enterprises, and academics, because of its capability of providing a transparent, secured, tamper-proof solution for interconnecting different stakeholders in a trustless setup. In January 2021, the Ministry of Electronics and Information Technology (MeiTY), Government of India, published the first draft of the “National Strategy on Blockchain” that highlights 17 potential applications that are of national interest. Against this backdrop, this subject will cover the basic design principles of Blockchain technology and its applications over different sectors.

#### Course Layout:

• Week 1: Introduction to Blockchain Technology and its Importance
• Week 2: Basic Crypto Primitives I – Cryptographic Hash
• Week 3: Basic Crypto Primitives II – Digital Signature
• Week 4: Evolution of the Blockchain Technology
• Week 5: Elements of a Blockchain
• Week 6: Blockchain Consensus I – Permissionless Models
• Week 7: Blockchain Consensus II – Permissioned Models
• Week 8: Smart Contract Hands On I – Ethereum Smart Contracts (Permissionless Model)
• Week 9: Smart Contract Hand On II – Hyperledger Fabric (Permissioned Model)
• Week 10: Decentralized Identity Management
• Week 11: Blockchain Interoperability
• Week 12: Blockchain Applications
###### CRITERIA TO GET A CERTIFICATE:

Average assignment score = 25% of average of best 8 assignments out of the total 12 assignments given in the course.
Exam score = 75% of the proctored certification exam score out of 100

Final score = Average assignment score + Exam score

YOU WILL BE ELIGIBLE FOR A CERTIFICATE ONLY IF AVERAGE ASSIGNMENT SCORE >=10/25 AND EXAM SCORE >= 30/75. If one of the 2 criteria is not met, you will not get the certificate even if the Final score >= 40/100.

If you have not registered for exam kindly register Through https://examform.nptel.ac.in/