Course Name : Computer Engineering Group
Course Code : CO/CM/CD
Semester : Fourth
Subject Title : Computer Network
Marks : 100
Time : 3 hrs.
1. All questions are compulsory.
2. Illustrate your answers with neat sketches wherever necessary.
3. Figures to the right indicate full marks.
4. Assume suitable data if necessary.
5. Preferably, write the answers in sequential order.
Q.1A) Attempt any SIX of the following: 12 Marks
a) State four network applications.
b) What is subnet masking? State the subnet masks for class A, B and C of IP address.
c) Define the terms Unicasting and broadcasting.
d) What is an intelligent hub?
e) State the classification of networks based on scale i.e. with respect to inter processor distance.
f) State the best guided media available. Justify.
g) State the two of important transport layer protocols of the TCP/IP protocol suite.
h) State the names of the two sub-layers of the Data Link layer.
Q.1B) Attempt any TWO of the following: 08 Marks
a) Classify the following protocols into connection oriented and Connection less
protocols and justify your answer.
i) TCP ii) UDP iii) IP iv) SLIP
b) Explain registered and unregistered IP addresses.
c) Compare the OSI reference model with TCP/IP network model.
Q.2A) Attempt any THREE of the following: 12 Marks
a) How computer networks are classified based on transmission Technology used?
Give one example of each class.
b) Define the following terms :
i) Client iii) Channel
ii) Server iv) Workstation
c) Compare LAN and WAN
d) Explain the following terms:
i) Broadcast networks ii) Subnet mask
Q.2B) Attempt any ONE of the following: 04 Marks
a) It is proposed to design a network with all the machines having equal priority and without very stringent security. Which network configuration would be appropriate in this situation ? State the reasons.
b) Draw client – server network configuration. Name network operating System used in this configuration. Comment on level and effort of Administration and training required for client-server networks.
Q.3A) Attempt any ONE of the following: 04 Marks
a) State whether troubleshooting in ring network is easy or difficult. Two possible
causes of failure in ring network. State whether ring is an Active or passive network.
b) Networking topologies are to be considered for a network for a Telemarketing firm.
Under what circumstances would a ring be less Appropriate than star?
Q.3B) Attempt any THREE of the following: 12 Marks
a) Which network topology is the most reliable topology? Why?
b) Draw star bus topology connecting three star networks, each star Network consists of four computers.
c) What role do hub and switch play in a network? State any two differences between them.
d) What is NIC? State any three functions of NIC.
Q.4 Attempt any TWO of the following: 16 Marks
a) Describe the following terms :
i) Active hub ii) Static router
iii) Passive hub iv) Dynamic router
b) Draw a neat labeled diagram showing the OSI reference model. Explain two
functions of network layer and presentation layer.
c) Explain how satellite communication takes place.
Q.5 Attempt any FOUR of the following: 16 Marks
a) Explain the advantages of the fibre optic cable with respect to the following cable characteristics:
i) Speed iii) Effect of atmospheric conditions
iii) Attenuation iv) Electromagnetic interference
b) State the type of transmission media used now a days for the following application areas:
i) Cable TV ii) Cellular telephone
iii)Wired LAN iv) Internet backbone
c) Compare twisted pair cable and coaxial cable with respect to:
i) Cost ii) Noise
ii) Bandwidth iv) Electronic eavesdropping
d) Describe the following terms with respect to cellular telephony
i) Soft handoff ii)) Roaming
iii) GSM iv) AMPS
e) Suggest the appropriate multiplexing technique to be used in the Following application areas:
i) Cable TV ii) Second generation cell phones
iii) SONET iv) Public telephones
Q.6 Attempt any FOUR of the following: 16 Marks
a) Write the names of the layers that perform the following functions:
i) Data encryption ii) Error detection
iii) File transfer iv) Data encoding
b) State four types of services provided by the transport layer of the OSI reference model with example of each
c) Explain the role played by the DHCP Protocol in the TCP/IP network.
d) Explain Point-to-Point networks. Give an example.
e) Explain the functions of the Session Layer of the OSI Reference Model.
f) Explain the concept used in the following network services:-
i) File Sharing ii) Printer Sharing
Click Here To Download MSBTE 4th Semester Sample Papers
Course Name : Computer Engineering Group