Chi-Cheng Lin, Winona State University CS 313 Introduction to Computer Networking & Telecommunication Introduction – Part I.

Slides:



Advertisements
Similar presentations
Computer Network Chapter 4. I think there is a world of market for maybe five computers Thomas J. Watson Chairman IBM, 1943.
Advertisements

Maninder Kaur COMPUTER NETWORKS Maninder Kaur 14/10/2010
PYP002 Intro.to Computer Science Introduction to Networks1 Networks Chapter 17.
Mgt 20600: IT Management & Applications Telecommuncations and Networks Tuesday March 28, 2006.
Telecommunications Chapter 5 Chapter 5 Telecommunications
EEC-484/584 Computer Networks Lecture 2 Wenbing Zhao
EEC-484/584 Computer Networks Lecture 2 Wenbing Zhao
Sami S.Al-Wakeel 1 CHAPTER 1 INTRODUCTION. Sami S.Al-Wakeel 2 NETWORK Definition: A Group of interconnected nodes that exchange information and share.
EEC-484/584 Computer Networks Lecture 2 Wenbing Zhao
D-1 Management Information Systems for the Information Age Second Canadian Edition Copyright 2004 The McGraw-Hill Companies, Inc. All rights reserved.
Networking and Telecommunications 9.  2001 Prentice Hall9.2 Chapter Outline Linking Up: Network Basics Electronic Mail, Teleconferences, and Instant.
Eleventh Edition 1 Introduction to Information Systems Essentials for the Internetworked E-Business Enterprise Irwin/McGraw-Hill Copyright © 2002, The.
{ Networking High School Computer Application. What is a network? A system containing any combination of computers, computer terminals, printers, audio.
Information Technology in Business: Telecommunications, Networks and Internet Basics.
 2002 Prentice Hall Chapter 9 Networking and Telecommunication.
 2002 Prentice Hall Chapter 6 Networking and Telecommunication.
Information Systems Today: Managing in the Digital World TB4-1 4 Technology Briefing Networking.
Textbook  “Data Communications and Networking” 2 nd Edition by Behrouz A. Forouzan  “Data and Computer Communication” 6 th Edition by William Stallings.
 2002 Prentice Hall Chapter 9 Networking and Telecommunication.
 2002 Prentice Hall Chapter 9 Networking and Telecommunication.
ITEC350 Networks I Lecture 1 Hwajung Lee. What is Computer Networks? A collection of autonomous computers interconnected by a single technology  Interconnected.
CHAPTER 2 COMMUNICATION, NETWORKS, AND THE WWW. WHAT IS COMMUNICATIONS? A process in which two or more computers or devices transfer data, instructions,
Chapter 7 Networking: Computer Connections. Networks n Network - a computer system that uses communications equipment to connect two or more computers.
1.1 What is the Internet What is the Internet? The Internet is a shared media (coaxial cable, copper wire, fiber optics, and radio spectrum) communication.
Extended Learning Module D
Information Technology Last centuries have been characterized by the main technology in those times: XVIII Century: The mechanical systems (Industrial.
Multimedia is a combination of text, art, sound, animation, and video.
Telecommunications, P. I AIMS 2710 R. Nakatsu. Networks and Telecommunications NETWORK – two or more computers interconnected by a cable (or alternatively,
Computer Networks A.S. Tanenbaum 5 th Edition 2011 Computer Networks, Fifth Edition by Andrew Tanenbaum and David Wetherall, © Pearson Education-Prentice.
Introduction Chapter 1. Uses of Computer Networks Business Applications Home Applications Mobile Users Social Issues.
Chapter 1 Communication Networks and Services Network Architecture and Services.
Computer network  A network consists of multiple computers connected to each other to share data and resources.
Introduction to Information Systems Lecture 06 Telecommunications and Networks Business Value of Networks Jaeki Song.
Chapter 1 Communication Networks and Services Network Architecture and Services.
Basic Concepts of Internet Technology What is a computer network? Isolated computers vs. networked computers internetworking The Internet What’s a protocol?
Networking Relationships What is a computer network?
Networking Classification A network is two or more computers that are connected 1 There size 2 Their Servers.
Reference :Understanding Computers
Chapter 1 Communication Networks and Services Network Architecture and Services.
Introduction to Computer Networks Dr. Sanjay P. Ahuja, Ph.D FIS Distinguished Professor of Computer Science School of Computing, UNF.
Communications & Networks National 4 & 5 Computing Science.
3/20: Telecommunications & Networking What is telecommunications? The hardware: physical components of telecommunications, inc. channels Standards: agreements.
COMPUTER NETWORK CREATED BY:- PALASH SACHAN. CONTENTS INTRODUCTION COMPUTER NETWORK TYPES OF NETWORK CLASSIFICATION OF NETWORK ARCHITECTURE NETWORK TOPOLOGY.
Introduction. Data Communication Communication Communication Sharing information: Local & Remote Sharing information: Local & Remote Local Local Face.
When we communicate, we are sharing information. This sharing can be local or remote. Between individuals, local communication usually occurs face to face,
Telecommunications and Networks Chapter 6 Principles and Learning Objectives Effective communication is essential to organizational success. –Define.
TELECOMMUNICATIONS AND NETWORKS ~ Pertemuan 8 ~ Oleh: Ir. Abdul Hayat, MTI.
Introduction Chapter 1. Uses of Computer Networks Business Applications Home Applications Mobile Users Social Issues.
Chapter 9 Communications and Networks McGraw-Hill/Irwin Copyright © 2008 by The McGraw-Hill Companies, Inc. All rights reserved.
Introduction.
Management Information Systems - Introduction. The telecommunication system Telecommunication System – consists of hardware and software that transmits.
Chapter 1: Computer Basics Instructor:. Chapter 1: Computer Basics Learning Objectives: Understand the purpose and elements of information systems Recognize.
Introduction Chapter 1. Introduction  A computer network is two or more computers connected together so they can communicate with one another.  Two.
Introduction Chapter 1. Uses of Computer Networks Business Applications Home Applications Mobile Users Social Issues.
COMPUTER NETWORKS Hwajung Lee. What is Computer Networks? A collection of autonomous computers interconnected by a single or multiple technologies Interconnected.
G063 - Intranets, the Internet and Extranet. Learning Objectives: At the end of this topic you should be able to: describe the characteristics and purpose.
Chapter5 TELECOMMUNICATIONS AND NETWORKS. Content Networking the Enterprise Trends in Telecommunications The Business Value of Telecommunications Networks.
Fundamentals of Information Systems, Sixth Edition
Chapter 1 Communication Networks and Services
Introduction to Telecommunications
Instructor Materials Chapter 1 Ever Wonder How It Works?
Computer Networks Dr. Abbas abdulazeez.
Chapter 1 – Part 1 Introduction.
Communications, Networks, the Internet, and the World Wide Web
EEC-484/584 Computer Networks
Information Technology Fundamentals
Lecture 1 Overview of Communication Networks and Services
EUT 122 Skills and Technology in Communication
Module 1: Introduction Data Communication Networks
Presentation transcript:

Chi-Cheng Lin, Winona State University CS 313 Introduction to Computer Networking & Telecommunication Introduction – Part I

2 Topics l Introduction l Metric Units l Network Hardware l Network Software l Reference Models l Example Networks l Standards and Standards Organizations

3 Introduction l First two decades of computing  Highly centralized computer systems l Now  A large number of SEPARATE but INTERCONNECTED computers  Computer networks

4 What is Computer Network? l An collection of AUTONOMOUS computers INTERCONNECTED by a single technology  Interconnected: Able to EXCHANGE INFORMATION via transmission media  Media: copper wire, fiber optics, microwaves, communication satellites  Autonomous: no master/slave relation  NOT autonomous:  One computer can control another one  e.g., a large computer with remote printers and terminals l Network of networks: internetwork

5 What is Telecommunication? l What is data communication?  Exchange of data between two devices via some form of transmission media  Data are represented by bits – 0s and 1s l What is telecommunication?  Exchange of information over distance using electronic equipment

6 What is Telecommunication? l Components of data communication  Sender, receiver, medium, message, and  Protocol: set of rules governing data communication l Key elements of a protocol  Syntax  Structure/format  Semantics  Meaning  Timing  When and how fast

Data Communication l Components of data communication 7 SenderReceiver Medium Message Step 1: … Step 2: … : Protocol Step 1: … Step 2: … : Protocol

8 Distributed System vs. Computer Network l Distributed system  TRANSPARENCY  A collection of independent computers appear as a single coherent system  Single model/paradigm to users  Middleware on top of OS  Example? l Computer network  No such coherence, model, middleware  Machines visible to users  Users log onto remote machines

9 Distributed System vs. Computer Network l A distributed system is a SOFTWARE system built on top of a network l Distinction between network and distributed system  Software (especially OS) rather than hardware l However, considerable overlap between the two subjects

10 Uses of Computer Networks l Business applications  Resource sharing  Communication medium  E-commerce l Client-server model  Client requests, server performs & then replies  Example?

11 Business Applications of Networks l A network with two clients and one server.

12 Client-Server Model 1 2 3

13 Uses of Computer Networks l Home applications  Access to remote information  On-line publishing, digital library, WWW  Person-to-person communication  , instant messaging, videoconferencing, Internet phone, E-learning, multi-person messaging  Interactive entertainment  Video on demand (VOD), games  E-commerce  Home shopping, electronic banking and investment, on-line auction  Social network applications  Collaborative content creation

14 Home Network Applications (2) l Besides client-server model  Peer-to-peer system: there are no fixed clients and servers.

15 Mobile Users l Notebooks, PDAs, cellular phones l Smart phones: convergence of telephones and Internet l M-commerce, texting l Sensor networks l Wearable computers l Wireless networking and mobile computing

16 Metric Units l The principal metric prefixes l b: bit l B: byte = 8 bits

17 Metric Units l Computer storage size power of 2  mega = 2 20 =1,048,576  1 MB = 1 mega bytes = 1,048,576 bytes  1 GB = l Computer networking speed not power of 2  mega = 10 6 =1,000,000  1 Mbps = 1 mega bits per second = 1,000,000 bits / sec  1 Gbps =