DATA COMMUNICATION (Computer Data Communication eBook PDF Notes – SHN Notes)

DETAILED CONTENTS

1. Introduction

Data Communication- Components, Data representation, Data flow

Networks- Distributed processing, Network criteria , Physical structures

Network Category- LAN, WAN, MAN

2. Data and Signals

Analog and Digital data, Analog and digital signals, Periodic and Non Periodic signals,

periodic analog signals

Digital Signals- Bit rate, Bit length, Digital signal as a composite analog signal,

transmission of digital signals

Transmission Impairment- Attenuation, Distortion and noise

Performance- bandwidth, throughput, latency, jitter

3. Digital and Analog Transmission

Analog transmission- Digital to Analog Conversion- ASK, PSK, FSK

Analog to Analog Conversion- AM, PM,FM( No mathematical treatment)

Digital transmission- Digital to digital conversion- coding and schemes

Analog to digital conversion- PCM and Delta Modulation (DM)

Transmission modes- Serial and parallel transmission

4. Multiplexing – FDM, WDM, TDM

5. Transmission media

Guided media-Twisted pair cable, Co-axial cable, fiber optics cable, Unguided Media- radio wave, Microwave, Infrared

6. Error Detection and Correction

Types of Errors, redundancy, detection v/s correction, Forward error correction v/s retransmission. Error detection through Parity bit, block parity to detect double errors and correct single errors. General principles of error detection and correction using cyclic redundancy check