Data Networks

Paper Code:

25CBCA402

Credits:

Periods/week:

Max. Marks:

100.00

Objective:

Course Objectives:

The course will enable the students to

1. Learn various Data Communication and networking concepts.

2. Learning basic network models.

Course Outcomes:

Course

Learning Outcomes

(at course level)

Learning and teaching

strategies

Assessment

Strategies

Course

Code

Course

Title

5CBCA402

Data Networks (Theory)

CO205. Analyse the advantages of using a layered network model in real-world communication.

CO206. Distinguish between various transmission media used in data communication.

CO207. Analyse digital transmission methods and multiplexing techniques for networking efficiency.

CO208. Examine switching types and error detection/ correction techniques in networking.

CO209 Evaluate data link control and elementary protocols for channel reliability.

CO210.Contribute effectively in course- specific interaction.

Approach in teaching:

Interactive Lectures, Discussion, Reading assignments, Demonstration.

Learning activities for the students: Self learning assignments, Effective questions, Seminar presentation.

Class test, Semester end examinations, Quiz, Assignments, Presentation.

9.00

Unit I:

Data Communications: Components, Data Representation and Data flow; Networks: Distributed Processing, Network Criteria, Network Models, Categories of networks and Internetwork; Internet and Protocols and Standards.

Network Models: Layered tasks, the OSI model, Layers in the OSI Model, TCP/IP protocol Suit, Addressing.

9.00

Unit II:

Data and Signals: Analog and Digital Data, Analog and Digital Signals, Periodic and Non periodic Signals, Transmission impairment, Data rate limits and Performance. Transmission modes. Transmission Media: Guided media (Twisted Pair Cable, Coaxial Cable & Fiber-Optic Cable) and Unguided media (Radio wave, Microwave, Infrared & Light wave).

9.00

Unit III:

Digital Transmission: Digital to Digital Conversion: - Line coding (Unipolar, Polar & Bipolar), Block Coding (4B/5B & 8B/10B), Scrambling (B8ZS & HDB3), Analog to Digital Conversion: PCM & DM, Digital to analog conversion: ASK, FSK, PSK&QAM, Analog to Analog conversion: Amplitude Modulation, Frequency Modulation & Phase Modulation. Multiplexing: FDM, WDM, Synchronous TDM and Statistical TDM.

9.00

Switching: Circuit switched networks, message switching & packet switching. Datagram networks, Virtual Circuit networks. Error Detection and Correction: Introduction, Block coding: Hamming Distance & Parity bit, linear block codes, cyclic codes: CRC, VRC & LRC, and Checksum.

9.00

Unit V:

Data Link control: Framing, Introduction of Flow and Error Control. Elementary Data Link Protocols: - Simplest Protocol, Stop & Wait Protocol and Simplex protocol for a Noisy channel. Sliding window Protocols: -one-bit sliding window protocol, Go-Back-N Protocol, Selective Repeat Protocols.

ESSENTIAL READINGS:

1. Behrouz A. Forouzan, “Data Communication and Networking”, 4th edition, Tata McGraw Hill, 2006.

REFERENCES:

SUGGESTED READINGS:

1. A. S. Tanenbaum, “Computer Networks”, Pearson Education Asia, 4th Ed., 2003.

2. William Stallings, “Data and computer communications”, Pearson education Asia,

7thEd., 2002.

e -RESOURCES:

1.https://www.tutorialspoint.com/data_communication_computer_network/computer_ network _models.htm

2. https://cse.iitkgp.ac.in/~ksrao/pdf/iti-18/slide-2.pdf

3.https://www.cs.nmt.edu/~cs353/Lectures/hybrid%20lecture%2004%20and%2006. pdf

4. https://www.geeksforgeeks.org/error-detection-in-computer-networks/