Dữ liệu và máy tính Truyền thông potx

Data and Computer Data and Computer

Communications Communications

Chapter 1 Chapter 1

Introduction Introduction

The main topics of this book: The main topics of this book:

Exchange of data between Exchange of data between

two directly two directly

Connected devices Connected devices

Transmission Transmission

interfacing interfacing

data link control data link control

multiplexing multiplexing

Net connection Net connection

„ WAN

„ LAN

Protocol Protocol

„ Protocol architecture Protocol architecture

Data communication Data communication

PLAN OF THE TEXT PLAN OF THE TEXT

Overview Overview

„ Introduction of the topics Introduction of the topics

„ Discussion of protocols Discussion of protocols

Data Communication Data Communication

„ Exchange of data/transmission/interf Exchange of data/transmission/interfacing/link control/multiplex acing/link control/multiplexing

Wide Area Networks Wide Area Networks

„ Switching technologies (packet Switching technologies (packet switching/circuit switching/ATM) switching/circuit switching/ATM)

„ Congestion control Congestion control

Local Area Networks Local Area Networks

„ Transmission media Transmission media

„ Topologies Topologies

„ Medium access control protocols Medium access control protocols

„ Specific standardized LAN systems Specific standardized LAN systems

Networking Protocols Networking Protocols

„ Protocol architecture Protocol architecture

Chapter 1 introduction Chapter 1 introduction

Computer science

Data communication

1970s ~ 1980s merge

Data communication

Voice communication

No fundamental

diferences

Data processing equipment

Data communication equipment

Video communication

Single-processor computer

Multi-processor computer

LAN

、MAN

、WAN