Tribhuvan University
Bachelor of Computer Application
Semester 5 · TU Board 2022
Course Title: Computer Networking (CACS303)
Full Marks: 60Pass Marks: 24Time: 3 hours
Candidates are required to answer the question in their own words as far as possible.
Group B
Attempt any SIX question.(6 × 5 = 30)
- 2.5
What is digital signature and how it works?
Answer comingAlso asked in 2024
- 3.5
Why do we need DNS when we can directly use an IP address? Explain the process to resolve the domain www.tribhuvan-university.edu.np?
- 4.5
What do you mean by IP datagram fragmentation?
- 5.5
Explain the mechanism of bit and byte stuffing with suitable example.
- 6.5
Explain the causes of transmission impairment in data communication.
Answer comingAlso asked in 2020
- 7.5
What is flow control? Explain Go-Back-N ARQ with suitable diagram.
- 8.5
Explain in detail about the structure of IPv6 address. Differentiate between IPv4 and IPv6 address.
Group C
Attempt any TWO questions(2 × 10 = 20)
- 9.10
Explain how slotted Aloha improves the performance of system over pure Aloha. A bit stream of 100101010 is transmitted using CRC method. The generator polynomial is x³ + 1. Show the actual bit string transmitted and if fourth bit from LSB is altered, show the error detection in receiver side.
- 10.10
Why do we need layered protocol architecture? Discuss each layer of TCP/IP architecture along with function of each layer. Write the protocols used in each layer of TCP/IP.
- 11.10
Why do we need subnetting? What is the new subnet mask? Write subnet ID and broadcast address of each subnet if you divide a class C network (192.6.3.0–192.6.3.255) into 4 different subnets?
Answer comingAlso asked in 2024
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