Data comunication

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DATA COMMUNICATION: 

DATA COMMUNICATION Lecture-1

Course Outline: 

Course Outline The course will consist of : 45 lectures 10-14 assignments 2exams (1 midterm and 1 final) GMDB Grading Criteria: One Midterm: 35 % Final Exam: 45% Assignments: 15% GMDB: 5%

Textbook: 

Textbook “Data Communications and Networking” 2 nd Edition by Behrouz A. Forouzan “Data and Computer Communication” 6 th Edition by William Stallings

Overview of Lecture 1: 

Overview of Lecture 1 Data Communication Brief History of Communication Data Communication System Key Data Communication Terminology

DATA COMMUNICATION DEFINITION: 

DATA COMMUNICATION DEFINITION “Data Communication is the exchange of Information from one entity to the other using a Transmission Medium ”

History of Data Communication: 

History of Data Communication Telegraph 1837 Samuel Morse Telephone 1876 Alexander Graham Bell By 1950’s 1970’S Today

DATA COMMUNICATION: 

DATA COMMUNICATION “Data Communication is the exchange of Information from one entity to the other using a Transmission Medium ”

Data Communication Definition (Modified): 

Data Communication Definition (Modified) “Data Communication is the exchange of data (in the form of 0’s and 1’s) between two devices (computers) via some form of the transmission medium.”

LOCAL and REMOTE Communication: 

LOCAL and REMOTE Communication LOCAL Communicating devices are present in the same building or a similarly restricted geographical area

LOCAL and REMOTE Communication: 

LOCAL and REMOTE Communication REMOTE Communicating devices are present farther apart VAGUE DEFINITIONS We will clarify

Data Communication System: 

Data Communication System For Data Communication to occur, communicating devices must be a part of a system made up of some specific kind of hardware and software. This system is known as “DATA COMMUNICATION SYSTEM”

Effectiveness of Data Comm. System: 

Effectiveness of Data Comm. System Effectiveness depends upon three fundamental characteristics: Delivery Accuracy Timeliness

Components of a Simple Data Communication System: 

Components of a Simple Data Communication System

Components of a Data Communication System: 

Components of a Data Communication System A Data communication system is made up of 5 components: Message Sender Receiver Medium Protocol

Message Types: 

Message Types

Transmission Media: 

Transmission Media Medium Speed Cost Twisted Wire 300bps-10Mbps Low Microwave 256Kbps-100Mbps Low Coaxial Cable 56Kbps-200Mbps Low Fiber Optic Cable 500Kbps-10Gbps High

A Complex Data Comm. System: 

A Complex Data Comm. System

EXAMPLE – Electronic Mail: 

EXAMPLE – Electronic Mail

An Actual Digital Data Communication System: 

An Actual Digital Data Communication System

Summary: 

Summary Data Communication Brief History of Communication Data Communication System

Suggested Reading: 

Suggested Reading Section 1.2, “Data Communications and Networking” 2 nd Edition by Behrouz A. Forouzan Sections 1.1, 1.2, “Data and Computer Communication” 6 th Edition by William Stallings