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CN Unit I - Data Communication and Physical Layer - Lecture Notes

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CN Unit I - Data Communication and Physical Layer - Lecture Notes


CN Unit 1 - OSI Model Video


 

Computer Networks - Syllabus

 

 

Regulation 2018

Department of Information Technology

Course Code

Course Title

Hours / Weeks

Credits

Maximum Marks

L

T

P

C

CA

EA

Total

518ITT03/ 418CST05

COMPUTER NETWORKS

3

0

0

3

50

50

100

 

 

Pre-requisites: Computer Architecture

 

OBJECTIVES:

 

·         Grasp the principles of data communication and to learn various mediums used in Physical layer

·         Understand the functions of Data link layers.

·         Understand the networking concepts and different routing protocol

·         Get familiarized with different Transport and application layer protocols.

UNIT I - DATA COMMUNICATIONS & PHYSICAL LAYER                      8

Introduction: Components –Data representation –Direction of Data flow – Networks: criteria and physical structure – Network Types –Protocols and Standards – Layered Tasks–ISO / OSI model and layers in the OSI model – Addressing. Performance Metrics - Transmission Media: Guided Transmission Media –Twisted pair – Coaxial Cable – Fiber Optics – Unguided Media – Radio waves – Microwaves–Infrared. Network Components: Connectors – Transceivers – Media converters – Network Interface card – PC cards.

UNIT II   - DATA LINK LAYER                                                                        10

Error Detection and Correction : Types of Errors–Redundancy– LRC – CRC –Checksum- Data Link Control : Flow and Error control Protocols: Stop and wait – Stop and wait ARQ - Go back-N ARQ – Selective repeat ARQ- Sliding window –  HDLC.  Media Access  Control (MAC) – CSMA / CD - Wired LAN: Ethernet IEEE 802.3 –IEEE 802.4 – IEEE 802.5 – Virtual LAN.

UNIT III - NETWORK LAYER                                                                         10

Logical Addressing: IPv4 Addresses – Ipv6 Addresses - Connecting Devices: Repeaters – Hubs

– Bridges – Switches – Routers – Modems – Gateways - Switching: Circuit Switching - Packet Switching– Logical Addressing: IPv4 Addresses – Ipv6 Addresses - Internet Protocols: IPV4 – IPV6 - Unicast Routing Protocols: Distance Vector Routing – Link State Routing –Address Mapping: ARP, RARP- ICMP.


 

UNIT IV  - TRANSPORT LAYER                                                                     9

Process to process delivery –User Datagram Protocol (UDP) – Transmission Control Protocol (TCP) – Congestion Control Techniques– Congestion Prevention Policies - Quality of services (QoS) – Techniques to improve QoS - Integrated Services - Differentiated Services.

UNIT V - APPLICATION LAYER                                                                     8

Domain Name Space (DNS) – SMTP – POP3 – WWW - FTP – HTTP – SNMP – SSO

 

   TOTAL: 45

COURSE OUTCOMES:

 

At the end of the course, the students are able to

 

CO1: Understand the basic layers and its functions in computer networks.

CO2: Explore various flow and error control protocols in data link layer.

CO3:Understand and evaluate the performance of various routing algorithms.

CO4: Analyze flow control and congestion control algorithm for QoS at end to end level.

CO5: Explore the features and working of various application layer protocols.

 

TEXT BOOK:

1. Behrouz A. Forouzan, “Data communication and Networking”, Fifth Edition, Tata McGraw-Hill Publishing Co. Pvt., Ltd., New Delhi, 2013.

 

REFERENCE BOOKS:

1.      Andrew S. Tanenbaum, “Computer Networks”, Fifth Edition PHI Learning, NewDelhi, 2016.

2.      William Stallings, “Data and Computer Communication”, Tenth Edition, Pearson Education, New Delhi 2014.

3.      Alberto Leon Garcia and Indra Widjaja, “Communication Networks Fundamental Concepts and key Architectures”, Second Edition, Tata McGraw-Hill Publishing Co. Pvt., Ltd., New Delhi, 2009.

4.      James F. Kurose and Keith W. Ross, “Computer Networking: A Top-Down Approach Featuring the Internet”, Fifth Edition, Pearson Education, New Delhi 2012.

5.      Larry L.Peterson and Peter S. Davie, “Computer Networks”, Fifth  Edition Harcourt  Asia Pvt. Ltd.,USA, 2011.

6.      Prakash C Gupta, “Data Communications and Computer Networks”, Second Edition,  PHI Learning Pvt. Ltd., New Delhi, 2009.

Computer Networks - Unit V - Notes and Question Bank

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