Ch1 v1
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The document discusses data communication systems and networks. It introduces key concepts like data communication, components of a data communication system, different types of networks including LANs, WANs and MANs, the organization and structure of the Internet, and the basic elements of communication protocols. Diagrams and figures are included to illustrate different network topologies, types of connections, and the hierarchical organization of the Internet.
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![1-1 DATA COMMUNICATIONS The term telecommunication means communication at a distance. The word data refers to information presented in whatever form is agreed upon by the parties creating and using the data. Data communications are the exchange of data between two devices via some form of transmission medium such as a wire cable. ,[object Object],[object Object],Topics discussed in this section:](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
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This document provides an introduction and overview of key concepts in data communications and computer networks. It discusses four fundamental characteristics of data communication systems: delivery, accuracy, timeliness, and filtering. It also outlines five common components: the message, sender, receiver, medium, and protocol. The document then examines several aspects of networks including performance, reliability, security, physical structures, transmission modes, and categories such as local area networks, wide area networks, and metropolitan area networks.
ch01(Modified).ppt
This document provides an introduction to computer networks and data communication. It discusses key topics such as the definition of a computer network and data communication. It also describes common network topologies like bus, star, ring, and mesh. Additionally, it covers network types including LAN, MAN, WAN and the Internet. The document introduces concepts like protocols, standards, and the five basic components of data communication. It provides examples of different data flow methods and evaluates network criteria.
DCN Chapter 1
This document discusses data communication and networking. It covers topics like data communication systems, networks, the internet, and protocols. Specifically, it defines data communication as the exchange of data between devices via transmission mediums. It describes networks as sets of connected devices that exchange data. It also outlines categories of networks including local area networks (LANs), wide area networks (WANs), and metropolitan area networks (MANs). Additionally, it discusses the hierarchical organization of the internet and defines protocols as sets of rules that govern data communication.
Unit 1 Chap 1.ppt
This document provides an introduction to data communications and networks. It discusses data communication systems and their components. It defines what a network is and describes different network criteria like performance, reliability, and security. It also describes different physical network structures like point-to-point and multipoint connections. It categorizes networks into local area networks (LANs), wide area networks (WANs), and metropolitan area networks (MANs). It provides an overview of the internet and how it is organized. It introduces the concept of protocols and describes the key elements of protocols including syntax, semantics, and timing. It discusses some standard organizations that define communications protocols.
Data Communications and Networking ch1
This document provides an introduction and overview of key topics in data communications and computer networks. It discusses five components of data communication: data representation, data flow, distributed processing, network criteria and structures, and network models. It also describes different types of network topologies including point-to-point, mesh, star, bus, ring, and hybrid configurations. Additionally, it provides a brief history of the Internet and discusses internet service providers, protocols, standards, and standards organizations.
ch01.ppt
This document provides an introduction and overview of key topics in data communications and computer networks. It discusses five components of data communication: data representation, data flow, distributed processing, network criteria and structures, and network models. It also describes different types of network topologies including point-to-point, mesh, star, bus, ring, and hybrid configurations. Additionally, it provides a brief history of the Internet and discusses internet service providers, protocols, standards, and standards organizations.
COMPUTER NETWORKING MOD_1.ppt
This document provides an introduction and overview of key topics in data communications and computer networks. It discusses five components of data communication: data representation, data flow, distributed processing, network criteria and structures, and network models. It also describes different types of network topologies including point-to-point, mesh, star, bus, ring, and hybrid configurations. Additionally, it provides a brief history of the Internet and discusses internet service providers, protocols, standards, and standards organizations.
ch1_v1.ppt
This document provides an introduction to data communications and networks. It discusses the components of a data communication system including transmission medium and data flow. It also defines what a network is and describes different types of network criteria including performance, reliability, and security. Additionally, it covers physical network structures such as connection types, topologies, and categories of networks including local area networks (LANs), wide area networks (WANs), and metropolitan area networks (MANs). The document also provides an overview of the Internet, its organization, and internet service providers. Finally, it introduces the concept of communication protocols and defines the key elements of a protocol including syntax, semantics, and timing.
ppt_dcn.ppt
This document provides an introduction to data communications and networks. It discusses the components of a data communication system including transmission medium and data flow. It also defines what a network is and describes different types of network criteria including performance, reliability, and security. Additionally, it covers physical network structures such as connection types, topologies, and categories of networks including local area networks (LANs), wide area networks (WANs), and metropolitan area networks (MANs). The document also provides an overview of the Internet, its organization, and Internet service providers. Finally, it introduces the concept of communication protocols and defines the key elements of a protocol including syntax, semantics, and timing.
DATA COMMUNICATIONS.ppt
This document provides an introduction to data communications and networks. It discusses the components of a data communication system including transmission medium and data flow. It also defines what a network is and describes different types of network criteria including performance, reliability, and security. Additionally, it covers physical network structures such as connection types, topologies, and categories of networks including local area networks (LANs), wide area networks (WANs), and metropolitan area networks (MANs). The document also provides an overview of the Internet, its organization, and Internet service providers. Finally, it introduces the concept of communication protocols and some of their key elements such as syntax, semantics, and timing.
ch1_v1.ppt
This document provides an introduction to data communications and networks. It discusses the components of a data communication system including transmission medium and data flow. It also defines what a network is and describes different types of network criteria including performance, reliability, and security. Additionally, it covers physical network structures such as connection types, topologies, and categories of networks including local area networks (LANs), wide area networks (WANs), and metropolitan area networks (MANs). The document also provides an overview of the Internet, its organization, and Internet service providers. Finally, it introduces the concept of communication protocols and defines the key elements of a protocol including syntax, semantics, and timing.
Computer network fundamentals and communication
This document provides an introduction to data communications and networks. It discusses the components of a data communication system including transmission medium and data flow. It also defines what a network is and describes different types of network criteria including performance, reliability, and security. Additionally, it covers physical network structures such as connection types, topologies and categories of networks including local area networks (LANs), wide area networks (WANs), and metropolitan area networks (MANs). The document also provides an overview of the Internet, its organization and internet service providers. Finally, it introduces the concept of communication protocols and defines the key elements of a protocol including syntax, semantics and timing.
Data Communication.ppt
This document provides an introduction to data communications and networks. It discusses the components of a data communication system including transmission medium and data flow. It also defines what a network is and describes different types of network criteria including performance, reliability, and security. Additionally, it covers physical network structures such as connection types, topologies, and categories of networks including local area networks (LANs), wide area networks (WANs), and metropolitan area networks (MANs). The document also provides an overview of the Internet, its organization, and Internet service providers. Finally, it introduces the concept of communication protocols and their key elements of syntax, semantics, and timing.
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Ch1 v1
- 1. Chapter 1 Introduction Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display.
- 3. Figure 1.1 Components of a data communication system
- 4. Figure 1.2 Data flow (simplex, half-duplex, and full-duplex)
- 8. Figure 1.3 Types of connections: point-to-point and multipoint
- 9. Figure 1.4 Categories of topology
- 10. Figure 1.5 A fully connected mesh topology (five devices)
- 11. Figure 1.6 A star topology connecting four stations
- 12. Figure 1.7 A bus topology connecting three stations
- 13. Figure 1.8 A ring topology connecting six stations
- 14. Figure 1.9 A hybrid topology: a star backbone with three bus networks
- 16. Figure 1.10 An isolated LAN connecting 12 computers to a hub in a closet
- 17. Figure 1.11 WANs: a switched WAN and a point-to-point WAN
- 18. Figure 1.12 A heterogeneous network made of four WANs and two LANs
- 19. 1-3 THE INTERNET The Internet has revolutionized many aspects of our daily lives. It has affected the way we do business as well as the way we spend our leisure time. The Internet is a communication system that has brought a wealth of information to our fingertips and organized it for our use. Organization of the Internet Internet Service Providers (ISPs) Topics discussed in this section:
- 20. Figure 1.13 Hierarchical organization of the Internet