Bachelors Level/Second Year/Fourth Semester/Science bit/fourth semester/network and data communications/syllabus wise questions
Bachelors In Information Technology
Institute of Science and Technology, TU
Network and Data Communications (BIT254)
Year Asked: 2082, syllabus wise question
Application layer
1.
What is DHCP?Explain DNS name resolution process with suitable example.[1+4]
2.
Write Short notes on:Sliding Window ProtocolHTTP Protocol[0+2.5+2.5]
Data link layer
1.
What are the services provided by Data Link Layer?A channel has a bandwidth of 5 MHz and a signal-to-noise ratio of 1000. Calculate the Shannon Capacity.[6+4]
2.
Differentiate between packet and circuit switched network.Explain the layers of OSI Reference Model in brief.[4+6]
3.
A bit stream 11011001 is transmitted using a standard CRC method. The generator polynomial is x3+x−1. Show the actual bit string transmitted and show the error checking on the receiver side.[5]
4.
Briefly explain ALOHA and Slotted ALOHA protocol with suitable diagram.[5]
Network layer
1.
Write down the major difference between IPv4 and IPv6 protocol.[5]
2.
Explain Link State Routing with suitable example.[5]
Physical Layer and Media
1.
Discuss different unguided transmission medium in brief.[5]
2.
Encode the bit stream 111001011 with: (i) Manchester (ii) NRZ-I and (iii) NRZ-L scheme.[5]
3.
What are the major differences between noise, distortion and attenuation?[5]
Transport layer
1.
Why TCP is known as reliable protocol? Explain.Divide the network 192.168.1.0/24 into 8 subnets and find its subnet ID, subnet mask, broadcast address and network ranges of each.[2+8]