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, syllabus wise question
Application layer
1.
What is the difference between DNS and DHCP? Explain with example [5]
Data link layer
1.
Calculate the transmitted encoded frame if the message sequence is 10010001 and generator polynomial is G(X) = $x^2 + x + 1$ [5]
Fundamental of Data Communication
1.
What are the practical implications of OSI layer? Define each layer focusing on its functionality and hardware used in each layer [10]
Network layer
1.
What is Congestion Control? How can it be handled? Explain acknowledgement policy and discarding policy [10]
2.
Explain leaky-bucket algorithm with an example [5]
3.
Explain link state routing protocol with an example [5]
4.
Explain recursive resolution. What are its advantages? [5]
5.
What is circuit switching? What are its advantages and disadvantages? [5]
Physical Layer and Media
1.
Differentiate between noise and attenuation. A pure ALOHA network transmits 200 bit frames using a shared channel with a 50 kbps bandwidth. What is the requirement to make this frame collision free? [10]
2.
Represent bit sequence 100111001 by the following wave forms: NRZ-L, NRZ-I [5]
3.
Explain the concept of TDMA with a neat diagram. [5]
Transport layer
1.
Write short notes on Reliable Protocol and Satellite Network [5]