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: 2081, syllabus wise question
Application layer
1.
What is the major purpose of DNS? Explain how DNS resolve its domain name.[5]
2.
Write short notes on:Token BucketSNMP[0+2.5+2.5]
Data link layer
1.
Differentiate between pure ALOHA and slotted ALOHA.Explain any three network layer protocols.[4+6]
2.
A bit stream 1001100 is transmitted using a standard CRC method. The generator polynomial is x3+1. Show the actual bit string transmitted.[5]
3.
Differentiate between circuit switching and packet switching.[5]
4.
Explain any one error control technique.[5]
Network layer
1.
Divide the network 192.168.2.0/24 into subnets having 48 hosts each.Find the subnet ID, subnet mask, broadcast address and network ranges. What are the advantages of subnetting?[7+3]
2.
Make distinction between link state routing & Distance Vector Routing with example.[5]
Physical Layer and Media
1.
Represent bit sequence 1100100111 by the following waveform: (a) NRZ-L (b) NRZ-I (c) Differential Manchester.[5]
2.
Discuss different guided transmission medium in brief.[5]
Transport layer
1.
Explain the layers TCP/IP protocol suite in detail.[10]
2.
Write down the major difference between TCP and UDP protocol.[5]