Question 1
(a)
List the key features of blockchain?
3 Marks
(b)
Blockchain is a distributed database. How does it differ from traditional databases?
4 Marks
(c)
Explain the Components of the blockchain.
7 Marks
Gujarat Technological UniversitySummer 2025 Examination
GTU 3171618 Blockchain Summer 2025 Paper Solution & PDF
B.E. · IT Engineering · Semester 7 · Subject Code: 3171618
Total Marks70 MarksExternal theory exam
Passing Marks23 Marks33% minimum cutoff
Exam Duration2.5 Hours2:30 PM – 5:00 PM
Paper Structure5 QuestionsWith internal OR choices
Question 2
(a)
Define What is Blockchain? Why Blockchain is important?
3 Marks
(b)
Write Application of Blockchain. Also, list the name of some popular platforms for developing blockchain applications.
4 Marks
(c)
Demonstrate How does Blockchain works?
7 Marks
OR OPTION
(c)
How do different cryptocurrency wallets differ? Explain.
7 Marks
Question 3
(a)
Explain in detail the types of cryptocurrency.
3 Marks
(b)
What is a ledger? Is Blockchain an incorruptible ledger?
4 Marks
(c)
Explain in detail the types of Blockchain.
7 Marks
OR OPTION
(a)
Explain What is encryption? What is its role in Blockchain?
3 Marks
(b)
What are the Merkle trees? What is its importance in blockchain?
4 Marks
(c)
Difference between the Bitcoin blockchain and the Ethereum Blockchain?
7 Marks
Question 4
(a)
Blockchain-as-a-Service(BaaS) is a concept similar to Software-as-a-Service (SaaS). Justify.
3 Marks
(b)
Differentiate Proof-of-work v/s Proof-of-stake protocol.
4 Marks
(c)
Justify Answer Is block chain good for E-commerce website, which type of permissions are to be given by e-commerce website for the private blockchain?
7 Marks
OR OPTION
(a)
Discuss the concept of double spending.
3 Marks
(b)
What is hash in blockchain? What are the key characteristics of Hash?
4 Marks
(c)
Explain and differentiate between SHA and MD5.
7 Marks
Question 5
(a)
Differentiate between Permission less Blockchain and Permissioned Blockchain.
3 Marks
(b)
Explain state machine with three states. Explain with diagram.
4 Marks
(c)
Describe the proof of work consensus algorithm and discuss the disadvantages of the proof of work consensus mechanism.
7 Marks
OR OPTION
(a)
Briefly discuss the advantage of Cryptocurrency.
3 Marks
(b)
Explain What is Metamask? How it is useful in Blockchain.
4 Marks
(c)
Discuss in detail Smart Contract in Ethereum with Example.
7 Marks
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About this Examination Paper & Attribution
Official Gujarat Technological University (GTU) examination paper and step-by-step solutions for Blockchain (Summer 2025, B.E. · IT Engineering, Sem 7). Features complete 70-mark regular & remedial examination pattern, official marking distribution across all 5 questions, and direct 1-click official PDF download.
Transcribed for student exam preparation from Gujarat Technological University official examination archives. Questions, syllabus guidelines, and curriculum marking schemes remain the intellectual property of Gujarat Technological University.