2022
Semester: Semester 5
Full Marks: 60
Pass Marks: 24
Time: 3 hours
Candidates are required to answer the question in their own words as far as possible.
Attempt any SIX question.
What is digital signature and how it works?
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?
What do you mean by IP datagram fragmentation?
Explain the mechanism of bit and byte stuffing with suitable example.
Explain the causes of transmission impairment in data communication.
What is flow control? Explain Go-Back-N ARQ with suitable diagram.
Explain in detail about the structure of IPv6 address. Differentiate between IPv4 and IPv6 address.
Attempt any TWO questions
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 Show the actual bit string transmitted and if fourth bit from LSB is altered, show the error detection in receiver side.
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.
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?
*** END OF QUESTION PAPER ***
1. Why Slotted Aloha is better than Pure Aloha | Aspect | Pure Aloha | Slotted Aloha | |--------|------------|---------------| | Time reference | Users transmit at any instant. | Time is divided in
Why a Layered Protocol Architecture is Needed Modularity – Each layer performs a specific set of tasks, making design, implementation and troubleshooting easier. Interoperability – Standard inte
Why Subnetting is Needed - Efficient use of IP addresses – avoids wasting large blocks of addresses. - Smaller broadcast domains – limits broadcast traffic, improving performance. - Improved secur
1. Digital Signature Definition: A digital signature is a cryptographic technique used to verify the authenticity and integrity of a digital message or document. - Provides authentication, integri
1. Why DNS is Needed Reasons: 1. Human-Friendly Names: - Domain names like www.tribhuvan-university.edu.np are easier to remember than numeric IP addresses like 103.69.124.1. 2. Dynamic IP
And more questions available on this page.