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: 2080.2, syllabus wise question
Application layer
1.
What is SNMP and how does it work? [5]
Data link layer
1.
Explain the design of Selective Repeat ARQ. Illustrate with suitable flow diagram example [10]
2.
What is MAC-address? The message sequence is 1011011 and generator polynomial G(X) = $x^3 + x^2 + 1$. Calculate the transmitted encoded frame [5]
Fundamental of Data Communication
1.
List different categories of networks and explain [5]
Network layer
1.
What are the features of Distance Vector Routing protocol? Explain Distance Vector Routing protocol with relevant example. What are its disadvantages? [10]
2.
How IGMP allows devices to join a multicast group? Explain [5]
3.
Explain different phases of packet switching. How packet switching works? [5]
Physical Layer and Media
1.
Explain the concept of Binary Phase Shift Keying. Represent bit sequence 111000110 by the following waveform a.) NRZ-I, b) Differential Manchester [10]
2.
Explain Frequency Division Multiplexing with required figure [5]
3.
Write short notes on a.) Shannon Capacity Write short notes on b.) Connectionless service [2.5+2.5]
Transport layer
1.
Differentiate between reliable and unreliable protocol. Provide example of each. How does protocol check for errors? [5]
2.
A pure ALOHA network transmits 200-bit frames using a shared channel of bandwidth. Find throughput if system produces frames per second. Vulnerable time of pure ALOHA? [5]