Computer Networks COMPUTER SCIENCE 3RD SEMESTER MODEL QUESTION PAPER

Computer Networks COMPUTER SCIENCE 3RD SEMESTER MODEL QUESTION PAPER

MODEL QUESTION PAPER (CIE)                                            

 

Test/Date and Time		Semester/year	Course/Course Code		Max Marks
Ex: I test/6 th week of sem 10-11 AM		III SEM	Computer Networks		20
		Year: 2015-16	Course code:15CS34T
Name of Course coordinator : Units:1,2 Co: 1,2 Note:   Answer all questions
Questio n no	Question			CL		C O	PO
1	Define the following terms –                                                                                                  (5) a.     Data communication. b.     Phase. c.     Wavelength. d.     Bandwidth. e.     Throughput.			R		1	1,2
2	Discuss different forms of data representation                                                                                                  (5) OR Explain briefly the components of Data communication, with a diagram			U		1	1,2
3	Explain the need for networking.                                                                                                  (5)			A		2	1,2
4	Explain TCP/IP reference model.                                                                                                  (5)			U		2	1,2

 Format for Student Activity Assessment

DIMENSION	Unsatisfactory 1	Developing 2	Satisfactory 3	Good 4	Exemplary 5	Score
Collection of data	Does not collect any information relating to the topic	Collects very limited information; some relate to the topic	Collects some basic information; refer to the topic	Collects relevant information; concerned to the topic	Collects a great deal of information; all refer to the topic	3
Fulfill team’s roles & duties	Does not perform any duties assigned to the team role	Performs very little duties	Performs nearly all duties	Performs all duties	Performs all duties of assigned team roles with presentation	4
Shares work equally	Always relies on others to do the work	Rarely does the assigned work; often needs reminding	Usually does the assigned work; rarely needs reminding	Does the assigned job without having to be reminded.	Always does the assigned work without having to be reminded and on given time frame	3
Listen to other Team mates	Is always talking; never allows anyone else to speak	Usually does most of the talking; rarely allows others to speak	Listens, but sometimes talk too much	Listens and contributes to the relevant topic	Listens and contributes precisely to the relevant topic and exhibit leadership qualities	3
				TOTAL		13/4=3.25=4

TOTAL 13/4=3.25=4

*All student activities should be done in a group of 4-5 students with a team leader.

 

Diploma in Computer science & Engineering

III- Semester

Course Title: COMPUTER NETWORK

Time: 3 Hours Max Marks: 100

PART-A

Answer any SIX   questions. Each carries 5 marks. 5X6=30 Marks

1) Define the following terms –

a. Data communication.

b. Phase.

c. Wavelength.

d. Bandwidth.

e. Throughput.

2) Explain the functions of physical and data link layers of OSI model.

3) Illustrate block coding with example.

4) Mention some standard CRC Polynomials.

5) Write a note on optical fibre cable.

6) Explain broadcasting in  Ethernet network.

7) Discuss different subnetting considerations.

8) Describe the content of Routing table.

9) Explain the working of ISDN.

.

PART-B

Answer any SEVEN full  questions each carries 10 marks. 10X7=70 Marks

1. Explain briefly the components of Data communication with diagram.

2. Explain OSI reference model with neat diagram.

3. Explain with an example design of CRC encoder and decoder.

4. List and explain coaxial twisted pair and optical fibre connectors.

5. Illustrate with diagram media access in Token Ring.

6. Compare SMTP verses POP.

7. Explain the features of IP address classes.

8. Describe VSAT network architecture and access technologies.

9. Explain briefly transparent bridge.

10. Explain ATM reference model with diagram.

MODEL QUESTION BANK

Diploma in Computer Science & Engineering III Semester

Course Title: Computer Network

CO	Question	CL	Marks
I	Define the following terms – a.     Data communication. b.     Phase. c.     Wavelength. d.     Bandwidth. e.     Throughput.	R	05
	Define the following terms – f.      Periodic signal. g.     Non-periodic signal. h.     Latency. i.      Jitter. j.      Bit rate.	R
	Illustrate different types of data flow.	R
	Explain briefly the components of Data communication, with a diagram.	R
	Discuss different forms of data representation.	U
	Mention    and    explain    the    fundamental    characteristics    of    data communication system.	U
	Explain the different categories of networks.	U
	Explain briefly the components of Data communication, with a diagram.	U	10
	Mention    and    explain    the    fundamental    characteristics    of    data communication system.	U
	Explain the different categories of networks.	U
II	Explain the need for networking.	A	5
	Explain the function of physical and data link layers of OSI model.	U
	Explain the function of presentation and application layers of OSI model.	U
	Explain the function of Transport layer and Session layers of OSI model.	U
	Explain TCP/IP reference model.	U
	List different network topologies. Explain with a diagram Ring Topology.	A
	Classify types of hardware and software network components.	A	10
	Explain OSI reference model with neat diagram.	U
	Compare OSI and TCP/IP Reference Models.	U
	Compare Bus and Star Topologies with diagram.	A
	Compare Mesh and Hybrid Topologies with diagram.	A
	Explain the terms – a.     Error detection. b.     Error correction. c.     Redundancy. d.     Forward error correction. e.     Re-transmission.	U	5
	Illustrate with examples different types of errors.	U
	Illustrate block coding with example.	A

III	Mention some standard CRC Polynomials.	U
	Discuss the advantages of Cyclic Codes.	A
	Explain briefly CSMA protocol.	U
	Write a note on CSMA/CD.	A
	Explain with a diagram and an example, the process of error detection using block coding method.	A	10
	With a diagram and an example, explain the structure of encoder and decoder in error correction.	A
	Illustrate with a block diagram process of error detection in block coding.	A
	Explain the design of CRC encoder and decoder, with an example.	A
	With an example, explain CRC division with polynomials.	A
	Discuss Controlled Access methods.	U
IV	Describe the important factors to be considered when transmitting signal between two computers.	U	5
	Explain coaxial cable with a diagram.	A
	Write a note on optical fibre cable.	A
	Explain multimode transmission of optical fibre.	U
	Explain single mode transmission of optical fibre.	U
	Describe the role of switches.	A
	Explain the role of NIC.	A
	List the benefits of WLAN verses Conventional LAN.	A
	List and explain the uses of WLAN.	A
	List the disadvantages of ARCNet.	A
	Explain ARCNet data frame format.	U
	Explain broadcasting in an Ethernet network.	A
	Explain the features of Fast Ethernet.	A
	Explain TCP/IP middle layer protocol.	A
	Describe SMTP protocol.	A
	Write a note on IMAP.	A
	Explain different types of twisted pair cable with advantages and disadvantages.	A	10
	List and explain coaxial, twisted pair and optical fibre connectors.	A
	Explain with a diagram Repeaters and Hubs.	A
	Describe Wireless LAN with a diagram.	A
	Illustrate with a neat diagram media access in Ethernet.	A
	Describe the Token Ring Data frame format.	U
	Illustrate with a diagram media access in Token Ring.	A
	Explain FDDI Lower layer protocol.	A
	Explain HTTP and FTP Higher layer protocols.	A
	Compare SMTP verses POP.	A
V	Explain the components of an IP address.	U	5
	Explain the limitation of IP address classes.	U
	Discuss different sub netting considerations.	U
	Explain the limitations of sub netting.	U
	Explain the features of IP address of classes.	U	10
	Explain the process of dividing a network into subnets.	U
	Explain communication across subnets with examples.	U
	Differentiate between LAN and WAN technologies.	U
	Explain the features of POTS.	U

VI	Explain the advantages and disadvantages of Leased lines.	A	5
	Explain the working of ISDN.	U
	Describe the components of VSAT network.	A
	Identify and explain the different factors to be considered to access charges in WAN connectivity.	U
	List the features of microwave connectivity.	U
	Describe the content of Routing table.	U
	Differentiate between Node–based Routing and Router–based Routing.	A
	Explain briefly Routing Protocols.	U
	Discuss frame relay protocol.	A
	Illustrate the working of VPN with a neat diagram.	A	10
	Describe VSAT network architecture and Access technologies.	A
	Compare the features of Radio and Infrared waves.	U
	Compare PPTP and IPSec.	U
	Explain briefly transparent bridge.	U
	Explain briefly Source Route Bridge.	U
	Describe different type of Gateways.	A
	Discuss PPP and X.25 Protocol.	U
	Explain ATM reference model with a diagram.	A
	Illustrate the working of DNS with a diagram.	A
	Illustrate the working of WINS with a diagram.	A
	Illustrate the working of DHCP with a diagram.	A