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COLLEGE OF TECHNOLOGY

Department of Information Technology

COURSE FILE

BRANCH : Information Technology

SEMESTER : V

SESSION : Jul-Dec 2015

SUBJECT : Computer Networks

SUBJECT CODE : IT-503

Prepared by: HOD IT

INDEX

1. SCHEME

2. SYLLABUS

3. TIME TABLE

4. LECTURE PLAN

5. UNIVERSITY EXAM PAPERS

6. MID SEM TEST PAPERS

7. MID SEM TEST RESULTS

8. UNIT TEST PAPERS

9. UNIT TEST RESULTS

10. ASSIGNMENTS

11. ASSIGNMENTS GRADING SHEET

12. TUTORIALS

13. LECTURE NOTES

14. ATTENDANCE SHEET

15. REFERENCES

Scheme

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(i) Syllabus

|Category of Course |Course Title |Course Code |Credit-6C |Theory Paper (ES) |

|Departmental Core |Computer Networks | IT 503 |L |T |P |Max.Marks-100 |

|(IT-503) | | | | | |Min.Marks-35 |

| | | | | | |Duration-3hrs. |

| | | |3 |1 |0 | |

Unit-I

Importance of computer networks, broadcast and point to point networks, Local area networks and Wide area

networks , Introduction to ISO-OSI reference model, TCP/IP reference model , function of each layer, interfaces

and services, Protocol data unit, connection oriented and connectionless services, service primitives, comparison

of TCP/IP and ISO-OSI reference model, Novel Netware, Arpanet , X.25

Unit-II

Data-Link layer: - Data link layer design issues, framing , flow & error control , physical addressing,Stop &

Wait protocol ,Go back N ARQ ,selective repeat ARQ ,piggybacking and pipelining ,HDLC LAN Protocol

stack-Logical link control and Media Access Control sublayer, IEEE 802.2 LLC Frame format Data link

layer in the internet, Serial line IP and Pont to point Protocol

Unit-III`

MAC layer Protocols- , static and dynamic allocation , Pure and slotted ALOHA protocols, Carrier sense

multiple access, Persistent and non persistent CSMA, IEEE standard 802.3 and Ethernet,802.3 cabling,

IEEE 802.4, IEEE 802.5, FDDI Wireless LAN , Comparison of wired and wireless LAN, WIMAX

Unit-IV

The Network layer- logical addressing, classful & classless addressing , address mapping packet delivery &

forwarding. unicast routing protocols , multicast routing protocols, Routing algorithm- Least Cost, Dijkstra's,

Bellman-ford, congestion control algorithms, Internetworking devices, Introduction to Internet protocol IPv4

Unit-V

Transport layer-Transport services , Process to process delivery, UDP ,TCP ,congestion control , quality of

service , Integrated services, Differentiated services LAN-WAN Design and implementation-Configuring TCP/IP,

using Ipconfig, ping command , study of structured LAN , study of internetworking devices and their

configuration– switches, hubs, Bridges, routers and Gateways

References:-

1. “Local area networks ”, Forouzan, TMH, 1st edition

2. “Computer Networks” - Tanenbaum ,PHI Learning.

3. Computer Networks: Protocols, Standards and Interfaces By Black, PHI learning

4. “Computer Communications & Networking Technologies”-Michael A. Gallo & William M. Hancock –

Cengage pearsen publications

(ii) Time Table

| | COLLEGE OF TECHNOLOGY | Format No | |

| |TIME TABLE | | |

|  |PERIOD WISE DETAILS | | |

| |W.E.F. | | |

| | |ISSUE NO | |

| | |YEAR |2015-16 |

|Faculty Name: Branch/Sem: IT V SEM (B) |Department: Information Technology |

|Day |

| |Ms. Kavita Rawat (KR) | |

| | | |

| | |APPROVED BY : |

| | |(HOD) |

| | | |

| | | |

| | | |

| | |APPROVED BY : |

| | |(PRINCIPAL) |

(ii)Lecture Plan with references

|Lecture no. |Topic to be covered |Date of Completion |Remarks |

| |Introduction: Components, data representation, data flow, Serial and parallel| |R1;2,22 |

| |Transmission, Modes of data transmission | |R2;104,103,108,112 |

| |Encoding: unipolar, Bipolar, polar | |R2;89,110 |

| |Block codes, Data compression, | |R2 97 |

| |Frequency dependent codes | |R1;21-25 |

| |Run length encoding, Relative encoding | |R1 31 |

| |Analog and digital Transmission methods | |R1 102,159 |

| |Nyquist Theorem | |R3 89 |

| |Multiplexing TDM,WDM ,FDM, Synchronous and statistical TDM | |R2 149 |

| |FDM, Synchronous and statistical TDM ,Multiplexing Hierarchy | |R2 157-165,R1 77-82 |

| |Spread spectrum :FH, DSSS | |R2 363,364, R2 364,365 |

| |Unit Test – I (25% of Syllabus) | | |

| |Terminal handling and Polling | |R1 282-289 |

| |Switching: Circuit, Message | |R3 147,150 |

| |Packet Switching | |R3 150 |

| |X.25 | |R3 61-73 |

| |ISDN | |R1 93-95 |

| |Interfacing Standards: 232 ,449 | |R3 :73 |

| |Interfacing Standards: 232 ,449 | |R3 :73 |

| |Null Modem | |R376 |

| |BNC Connectors, connecters, RJ 11,45 | |R3 272-291 |

| |BNC Connectors, connecters, RJ 11,45 | |R3 272-291 |

| |X.21 | |R1 237 |

| |Modems: Types feature. Constellation Diagram. | |R2 128-130,221,223 |

| |Mid Semester (50% of Syllabus) | | |

| |Limited Distance, Dial up , Baseband | |R2 128 |

| |V series Modems | |R2 130 |

| |Active and passive hubs, Repeaters, Bridges | |R2 389,387,390 |

| |Bridges continued, Switches, gateway | |R2 390-395 |

| |Topologies | |R1 324 |

| |Queing theory, Types of queues, | |R1 589 |

| |Queing theory, Types of queues, | |R1 589 |

| |Parameters :Trafiic intensity .length of queue etc | |R1 589 |

| |Transmission media: Transmission line characteristics, distortion | |R2 173 |

| |Transmission media: Transmission line characteristics, distortion | |R2 173 |

| |Crosstalk | |R2 71,173 |

| |Twisted Pair, Baseband and broadband coaxial | |R2 174-192 |

| |Twisted Pair, Baseband and broadband coaxial | |R2 174-192 |

| |Twisted Pair, Baseband and broadband coaxial | |R2 174-192 |

| |Velocity and propagation of light | |R4 36 |

| |Unit Test – II (75% of Syllabus) | | |

| |Unguided media, electromagnetic polarization | |R4 40 |

| |Terrestrial propagation of EM waves | |R4 66 |

| |Free space path losses | |R4124-130 |

| |ADSL,HDSL,VDSL | |R3175-180 |

| |Error control and detection, BER, Parity checking | |R2 267,268, R3 196 |

| |Checksum, CRC, Hamming, Interleaved codes | |R3 538, R2 257-266 |

| |Block parity, convolution codes | |R2 97 |

| |Comparison ,losses, light sources and detectors | |R4 87-102 |

| |PUT (100% of Syllabus) | | |

Reference Books:

R1: Data Communications and Networking by Behrouz A Farouzan (R1)

R2: Data and Computer Communication by William Stallings (R2)

R3: Computer Networks by Andrew S Tanenbaum (R3)

R4: Data Communications, Computer Networks and Open Systems by Fred

Halsall (R4)

R5: Sedha (R5)

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COLLEGE OF TECHNOLOGY

Department of Information Technology

MID-SEMESTER EXAM-I

Subject: Data communication

Subject Code: IT-503

MAX-MARKS: 20 MAX-TIMES: 2Hrs

Remarks: (a) All questions carry equal marks.

(b) Attempt any five questions

Unit - I

1. a) Define digital signal.

b) Define the term frequency and period of a signal. 2

c) Define line coding. What are its characteristics? 3

d) Draw components of data communication system and state

|function of each component. |7 |

|Or | |

|What are modes of data transmission? Explain with | |

|examples. |7 |

Unit - II

2 . a ) What are the advantages of TDM over FDM?

b) Define synchronous TDM.

c) What is direct sequence spread spectrum? 3

d) What is the difference between message switching and

| packet switching? |7 |

| | |

| | | |[2] | | |

| | | |Or | | |

| |What is ISDN? Explain in details with neat diagram. 7 | |

| | | |Unit - III | | |

|3 . a) |Define: | | | |

| | | | | | |

| |i) RJ-45 |ii) RJ-11 |2 | |

|b) |What is the key advantage of BNC connector? |2 | |

|c) |List out the difference between active hubs and passive | |

| |hubs. | |3 | |

|d) |What are types of bridge? Explain with example. |7 | |

| | | |Or | | |

| |What is Null Model? Explain in detail with diagram. 7 | |

| | | |Unit - IV | | |

|4 . a) |Define: | | | |

| |i) |Guided media | | | |

| |ii) |Unguided media |2 | |

|b) |Define ADSL. | |2 | |

|c) |What are the characteristics of Base-band signal? |3 | |

|d) |What is electromagnetic signal? Explain its advantages. | |

| | | | |7 | |

| | | |Or | | |

| |What are the advantages of fibre optic cable over | | |

| |coaxial | | | |

| |cable? | |7 | |

|5. a) | | |Unit - V | | |

|b) |How do you identify errors in the signal? |2 | |

|c) |List out the methods available for error detection. |2 | |

|d) |Define flow integrity error. |3 | |

| | | | |

| |What is CRC? Explain CRC with example. |7 | |

| | | |Or | | |

| |What is interleaved codes? Explain interleaved codes | | |

| |with | | | | |

|1 |example. | |7 | |

COLLEGE OF TECHNOLOGY

Department of Information Technology

MID-SEMESTER EXAM-I

Subject: Computer Networks

Subject Code: IT-503

MAX-MARKS: 20 MAX-TIMES: 2Hrs

Remarks: (a) All questions carry equal marks.

(b) Attempt any five questions

|Ques. | |Marks |

| | | |

|1. |a) Compare ISO/OSI protocol suite with TCP/IP model. |4 |

| |b) Explain Connection Oriented and Connection less services. | |

|2. |a) What is Computer Networks? Write its Classification and applications. |4 |

| |b) There are two ways to send a file of 12 MB to a long distance- | |

| |(i) through a bike carrying floppy box and running at 50km/hr. | |

| |(ii) through a telephone line whose channel capacity is 56 kbps. | |

| |Upto what distance bike is better option. | |

|3. |a) Explain LLC and its services. |4 |

| |b) Define HDLC and its frame format. | |

|4. |a) Define sliding window ARQ. |4 |

| |b) A channel has a bit rate of 4kbps and a propagation delay of 20 ms. For what range of frame does stop and | |

| |wait protocol give an efficiency of at least 50% ? | |

|5. |Define the following terms- |4 |

| |i) ARPANET ii) X.25 iii) PPP (any two) | |

COLLEGE OF TECHNOLOGY

Department of Information Technology

MID-SEMESTER EXAM-II

Subject: Computer Networks

Subject Code: IT-503

MAX-MARKS: 20 MAX-TIMES: 2Hrs

Remarks: (a) All questions carry equal marks.

(b) Attempt any five questions

|Ques. | |Marks |

| | | |

|1. |a) Differentiate and compare Wired LAN, Wireless LAN and WiMax. |2 |

| |b) Mention the three auxiliary protocols at the network layer of the TCP/IP suite that are designed to help the IPv4| |

| |Protocol. |2 |

|2. |a) Determine if these devices are on the same subnet or different subnets- |2 |

| |DeviceA: 172.16.17.30/20 | |

| |DeviceB: 172.16.28.15/20 | |

| |b) Draw and explain the IPv4 Header format.. |2 |

|3. |a) What is distance vector routing? Also write algorithm for the distance vector routing |2 |

| |b) What are the techniques used for congestion control? | |

| | |2 |

|4. |a) Explain the 3-way handshake technique related to TCP protocol. |2 |

| |b) Draw and explain the UDP pseudo header. |2 |

|5. |Short notes (any four) |4 |

| |IPv6 | |

| |Compare, Bridge, switch, hub and router | |

| |Dijkastra Algorithm | |

| |Differentiated Services | |

| |Classless Addressing | |

COLLEGE OF TECHNOLOGY

Department of Information Technology

UNIT TEST - I

Subject: Computer Networks

Subject Code: IT-503

MAX-MARKS: 20 MAX-TIMES: 1Hrs

Remarks: (a) All questions carry equal marks.

Q. 1. (a) What do you mean by broadcast networks? Discuss the need or lack of need for a Network layer in a broadcast network.

(b) What are the some factor that determines whether a communication system is a LAN, MAN or WAN? Explain each of them in detail

Q. 2. (a) Explain the well labeled ISO-OSI reference model. Give the function of each layer.

(b) Differentiate between connectionless and connection oriented services.

COLLEGE OF TECHNOLOGY

Department of Information Technology

UNIT TEST - II

Subject: Computer Networks

Subject Code: IT-503

MAX-MARKS: 20 MAX-TIMES: 1Hrs

Remarks: (a) All questions carry equal marks.

1. (a) Explain TCP/IP protocol suite in detail.

b) Define piggybacking and pipelining.

2. (a) Draw the frame format of HDLC protocol. Explain the technique of bit stuffing for data transparency. Explain the use of control, data checksum and address fields of HDLC protocol.

b) Briefly explain IEEE 802.2 in detail

COLLEGE OF TECHNOLOGY

Department of Information Technology

UNIT TEST - III

Subject: Computer Networks

Subject Code: IT-503

MAX-MARKS: 20 MAX-TIMES: 1Hrs

Remarks: (a) All questions carry equal marks.

Q. 1. (a) Differentiate between pure and slotted ALOHA. How the throughput of slotted ALOHA is

better than pure ALOHA?

(b) What is static and dynamic channel allocation?

Q. 2. (a) Give the frame format of IEEE 802.5. Explain various fields used in it.

(b) Compare wired and wireless LAN. What is WIMAX?

COLLEGE OF TECHNOLOGY

Department of Information Technology

UNIT TEST - IV

Subject: Computer Networks

Subject Code: IT-503

MAX-MARKS: 20 MAX-TIMES: 1Hrs

Remarks: (a) All questions carry equal marks.

Q. 1. (a) Compare unicast, broadcast and multicast.

(b) Explain the frame format of IPv4.

Q. 2. (a) Explain address mapping. What protocols are used for address mapping?

OR

For the given data IP address is 172.16.0.0 Subnet mask is 255.255.248.0. Find the:

a. No. of subnets

b. No. of hosts

c. Subnet IP

d. Range of IP address

(b) What is Optimality? Why it is used in routing? Explain shortest path routing algorithm.

COLLEGE OF TECHNOLOGY

Department of Information Technology

UNIT TEST - V

Subject: Computer Networks

Subject Code: IT-503

MAX-MARKS: 20 MAX-TIMES: 1Hrs

Remarks: (a) All questions carry equal marks.

Q. 1. (a) Differentiate between TCP and UDP.Explain Three-way handshaking.

(b) Explain BLUETOOTH. Write their architecture

Q. 2. Write Shorts notes on-

a. VoIP

b. FTP

c. Cryptography

d. SMTP

COLLEGE OF TECHNOLOGY

Department of Information Technology

ASSIGNMENT-I

Subject: Computer Networks

Subject Code: IT-503

1. Explain types of cable used in Different topologies in context of computer Network.

2. Explain and discusses the functional and architectural model of CAT-3 and 5 cable.

3. List all the options of ping command

COLLEGE OF TECHNOLOGY

Department of Information Technology

ASSIGNMENT-II

Subject: Computer Networks

Subject Code: IT-503

1. What is the significance of the ARP and RARP protocol?

2. Do the case study of IEEE 802.3 Ethernet with practical utility.

COLLEGE OF TECHNOLOGY

Department of Information Technology

ASSIGNMENT-III

Subject: Computer Networks

Subject Code: IT-503

1. List the name of the modern protocol which used CSMA scheme for sharing the channel

2. List all the options of arp command

3. How WIFI channel sharing is accomplish among the network users? Explain with architectural model.

COLLEGE OF TECHNOLOGY

Department of Information Technology

ASSIGNMENT-IV

Subject: Computer Networks

Subject Code: IT-503

1. What is difference between IPV4 and IPv6? Used IPV6 address in your home computers and list address assigned to your computer.

2. How to trace the route? Also explain all the options of the command

3. What do you mean by static IP and dynamic IP address? Explain with picture tutorial for the both scheme to set the IP address in a computer.

4. How to connect access moodle server and telnet with the help smart phone? Tells the application available in android phone for the same.

COLLEGE OF TECHNOLOGY

Department of Information Technology

ASSIGNMENT-IV

Subject: Computer Networks

Subject Code: IT-503

1. Setup your own FTP server (windows or linux)?

2. Write a java program related to the socket programming using UDP prorocol?

COLLEGE OF TECHNOLOGY

Department of Information Technology

ASSIGNMENT GRADING SHEET

Subject: Computer Networks Subject Code: IT503

Semester: V Session: Jul-Dec2015

Name of Incharge:

| | | | |

|1 |Local area networks |Forouzan |TMH, 1st edition |

|2 |TCP/IP Protocol Suite |Behrouz Forouzan |3/e, Mchraw Hill |

|3 |Computer Networks |Tanenbaum |PHI Learning |

|4 |Computer Networks: Protocols, Standards |Black |PHI learning |

| |and Interfaces | | |

|5 |Computer Communications & Networking |Michael A. Gallo & William M. Hancock |Cengage pearsen publications |

| |Technologies | | |

|6 |Computer Networks: A Top-Down Approach |Behrouz Forouzan and Firouz Mosharraf |TMH |

|S. No. |Web References |

|1 | |

|2 | |

|3 | |

|4 | |

|5 | |

List of Web References

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