Computer Networks Unit 3 – Network Layer: AKTU previous year questions
38 AKTU questions from Unit 3 (Network Layer) asked in 2018–2025, tagged by marks, year and topic. In short: about 37 marks of every paper come from this unit; the most asked topic is Routing and Forwarding (13 times); 33 questions came back in a later year. The latest ones are listed below; on the page you can filter them by 2-mark or long questions, topic and repeats.
Unit 3 previous year questions
- List various policies that are used for congestion control. (2 marks, 2025, Congestion Control)
- A company is assigned the address block 192.168.10.0/24. Divide it into 4 subnets and specify subnet ranges. (7 marks, 2025, Logical Addressing and Subnetting)
- Define Leaky Bucket Algorithm. How does Token Bucket Algorithm provide better traffic shaping control? (7 marks, 2025, Congestion Control)
- Discuss how the count-to-infinity problem occurs in Distance Vector Routing. Suggest any one method to mitigate it. (7 marks, 2025, Routing and Forwarding)
- For the following subnet, distance vector routing is used and the vectors that have just come into router C: from B: (5, 0, 8, 12, 6, 2); from D: (16, 12, 6, 0, 9, 10); and from E: (7, 6, 3, 9, 0, 4). The measured delays to B, D and E are 6, 3, and 5 respectively. Calculate C's new routing table. Give both the outgoing line to use and the expected delay. (7 marks, 2025, Routing and Forwarding)
- Explain new features in IPv6 over IPv4. What is the purpose of multiple headers? Explain in brief, how IPv6 handles multiple headers. (7 marks, 2025, IPv6)
- Explain the following: (i) RARP (ii) DHCP (iii) VPN (7 marks, 2025, Internetworking Protocols)
- Define delivery in Network Layer. (2 marks, 2024, Routing and Forwarding)
- Define Token Bucket. (2 marks, 2024, Congestion Control)
- Define IPv4 header Format in detail. (10 marks, 2024, Logical Addressing and Subnetting)
- Explain all Interdomain and Intradomain routings algorithms. (10 marks, 2024, Routing and Forwarding)
- Write about Quality-of-Service Parameters. (10 marks, 2024, Congestion Control)
Most asked Unit 3 topics
- Routing and Forwarding – asked 13 times
- Logical Addressing and Subnetting – asked 11 times
- Congestion Control – asked 9 times
Unit 3 question pattern
- 2-mark questions: 16 asked in 2018–2025
- 7-mark questions: 10 asked in 2018–2025
- 10-mark questions: 12 asked in 2018–2025
- About 37 marks from Unit 3 in every paper
- 33 questions were asked again in a later year
Unit 3 questions year by year
- 2025: 7 Unit 3 questions asked (44 marks across that year's papers)
- 2024: 5 Unit 3 questions asked (34 marks across that year's papers)
- 2023: 6 Unit 3 questions asked (36 marks across that year's papers)
- 2022: 6 Unit 3 questions asked (36 marks across that year's papers)
- 2019: 8 Unit 3 questions asked (36 marks across that year's papers)
- 2018: 6 Unit 3 questions asked (36 marks across that year's papers)