PYP002 Intro.to Computer Science Introduction to Networks1 Networks Chapter 17.

Slides:

Advertisements

Similar presentations

TYPES OF COMPUTER NETWORKS

Advertisements

Fundamentals of Information Systems, Second Edition 1 Telecommunications, the Internet, Intranets, and Extranets Chapter 4.

Information Technology Foundations-BIT 112 TECHNOLOGY GUIDE FOUR Basics of Telecommunications and Networks.

Unit 9 Network Fundamentals. Describe a network Explain the benefits of a network Identify risks in computing Describe the roles of clients & servers.

3 C H A P T E R © 2001 The McGraw-Hill Companies, Inc. All Rights Reserved1 Getting Connected  First,you need to subscribe to an Internet service provider.

Computers Are Your Future © 2008 Prentice-Hall, Inc.

Networks Adapting Computers to Telecommunications Media.

E-commerce and Information Technology in Hospitality and Tourism Chapter 3 Connecting to the World Copyright 2004 by Zongqing Zhou, PhD Niagara University.

Communications and Networks

99 CHAPTER COMMUNICATIONS AND NETWORKS. © 2005 The McGraw-Hill Companies, Inc. All Rights Reserved. 9-2 Competencies Discuss connectivity, the wireless.

1 Chapter 19 Networks. 2 What’s Inside and on the CD? In this chapter you’ll learn: –Basic network terminology –To identify network components –About.

Telecommunications and Networks Business value of networks Network components Chapter 6 McGraw-Hill/Irwin Copyright © 2007 by The McGraw-Hill Companies,

Chapter 5 Communications and Networks

McGraw-Hill/Irwin Copyright © 2008 by The McGraw-Hill Companies, Inc. All rights reserved. Chapter 9 Communications and Networks.

D-1 Management Information Systems for the Information Age Second Canadian Edition Copyright 2004 The McGraw-Hill Companies, Inc. All rights reserved.

CHAPTER Copyright 2003 The McGraw-Hill Companies, Inc.Copyright 2003 The McGraw-Hill Companies, Inc. 1 Connectivity, the Wireless Revolution, and Communications.

The Internet. What is the internet? a vast network designed to transfer data from one computer to another.

McGraw-Hill/Irwin Copyright © 2013 by The McGraw-Hill Companies, Inc. All rights reserved. Extended Learning Module E Network Basics.

Communications & Networks

Information Systems Today: Managing in the Digital World TB4-1 4 Technology Briefing Networking.

Networks Am I hooked up?. What is a network? A network is a group of 2 or more computers that are linked together either by wires or by a wireless means.

Chapter 5: Computer Networks

Chapter 5 Networks Communicating and Sharing Resources

Computer Network By Tahir Saad. Introduction to computer networking Content : The definitions of networking Use of network Network classification.

Stefan Thorvaldsson – What is a network? A network is two or more computer linked together so the are able to share resources. It could.

Networks A network is a collection of computers and devices connected together via communications devices and transmission media Advantages of a network.

CSCI-235 Micro-Computer in Science The Network. © Prentice-Hall, Inc Communications  Communication is the process of sending and receiving messages 

Networked Information Systems 1 Advantages of and classified by their size & architecture or design.

Chapter 7 Networking: Computer Connections. Networks n Network - a computer system that uses communications equipment to connect two or more computers.

Unit 1—Computer Basics Lesson 7 Networks.

Communications and Networks Chapter 9. CE06_PP09-2 Competencies (Page 1 of 2) Discuss connectivity, the wireless revolution, and communication systems.

Chapter 7 Connecting to the Internet. Connecting to the Internet FAQs: – What is the Internet? – What are the options for Internet service? – What is.

Computer Networks S3 Prepared by May Lau

Extended Learning Module D

Unit 4 Networking Review.

Living Online Module Lesson 23 — Networks and Telecommunication

Network Environments. Communications Networks LAN – Local Area Network Collection of Computers and peripherals with a common connection in one building.

Lecture 4 Title: Network Components and Types By: Mr Hashem Alaidaros MIS 101.

Networks CS105. What is a computer network? A computer network is a collection of computing devices that are connected in various ways so that they can.

Computer network  A network consists of multiple computers connected to each other to share data and resources.

Computing in the Modern World Unit 4. GPS: BCS-CMW-8. Students will demonstrate knowledge of basic components of computer networks.

Computers Are Your Future Eleventh Edition

Intro to Digital Technology Follow along and fill in your Guided Notes Handout.

Chapter 7 Connecting to the Internet. 2Practical PC 5 th Edition Chapter 7 Getting Started In this Chapter, you will learn: − What is the Internet − Options.

Benefits of Networking & Network administration. Outline the benefits the network there are actually only 2, namely "Sharing resources and as communication.

What is a Network? Living Online Lesson 1 Mrs. Elzey.

Networking Classification A network is two or more computers that are connected 1 There size 2 Their Servers.

Basic Computer Knowledge. Outline Notes 1 Notes 2 Assessment.

Living Online Module Lesson 23 — Networks and Telecommunication Computer Literacy BASICS.

Networks Am I hooked up?. Networks definition sizes of networks types advantages and disadvantages how data is sent transmission media business uses.

Networking Basics 8th Grade

Communications and Networks Chapter 9 9-1Copyright © 2011 by The McGraw-Hill Companies, Inc. All rights reserved.

CSCI-235 Micro-Computer Applications The Network.

Communications & Networks National 4 & 5 Computing Science.

Introduction to computer networking Objective: To be acquainted with: The definitions of networking Network topology Network peripherals, hardware and.

Chapter 9 Communications and Networks McGraw-Hill/Irwin Copyright © 2008 by The McGraw-Hill Companies, Inc. All rights reserved.

Lesson 7 Networks Unit 1—Computer Basics. Computer Concepts BASICS - 2 Objectives Describe the benefits and disadvantages of networks. List and describe.

By: Chasity, Jamon, Clifton.  Computer networks have lots of pathways that send information back and forth.  Networks can even send the information.

1 Lesson 24 Network Fundamentals Computer Literacy BASICS: A Comprehensive Guide to IC 3, 3 rd Edition Morrison / Wells.

Introduction to Networks. When Personal Computers first appeared in business, software programs were designed for a single user. However as computers.

Communications and Networks Chapter 9 McGraw-HillCopyright © 2011 by The McGraw-Hill Companies, Inc. All rights reserved.

 client  client/server network  communication hardware  extranet  firewall  hacker  Internet  intranet  local area network (LAN)  Network 

Computer Networks Part 1

Networks, telecommunications

Networks Intro to Digital Technology

Computing in the Modern World Unit 4

Networking Lexi Becker Chapter is broke in two parts

Introduction to Computer Concept

Networks, telecommunications

Presentation transcript:

PYP002 Intro.to Computer Science Introduction to Networks1 Networks Chapter 17

PYP002 Intro.to Computer ScienceIntroduction to Networks2 Objectives  The students should understand What is a network? What are the components of a network? Types of Internet Connections E-Commerce Advantages and Disadvantages of Networks.

PYP002 Intro.to Computer ScienceIntroduction to Networks3 What is a network?  A network is any collection of devices with the ability to communicate with each other. telephone network cellular phone network  A communications protocol is a set of rules for transmitting and receiving voice or digital data.  Communications protocols are implemented by communications software.

PYP002 Intro.to Computer ScienceIntroduction to Networks4 Computer Networks  A Computer Network consists of two or more computers with communications software, connected in a way that allows information and devices to be shared.

PYP002 Intro.to Computer ScienceIntroduction to Networks5 Types of Network  A Local Area Network (LAN) typically connects personal computers within a very limited geographical area – usually a single building.  A Wide Area Network (WAN) covers a large geographical area and typically consists of several smaller networks.

PYP002 Intro.to Computer ScienceIntroduction to Networks6 The Internet and Intranet  The Internet is the world’s largest WAN, which is a collection of local, regional, national and international computers linked together to exchange data and distribute processing tasks.  An intranet is a type of LAN typically maintained by a private business or organization and access is typically limited to employees.  Intranets are commonly used to store and circulate internal documents.

PYP002 Intro.to Computer ScienceIntroduction to Networks7 Components of a network  A network connection point is typically referred to as node.  A personal computer connected to a network is often referred to as a workstation.  A server is a computer configured to provide a network service.  A client is a computer requesting a service from a server through a network.

PYP002 Intro.to Computer ScienceIntroduction to Networks8 Client/Server Network  A client/server network contains one or more computers configured with server software, and other computers configured with client software to access the servers.

PYP002 Intro.to Computer ScienceIntroduction to Networks9 Peer-to-Peer Network  A peer-to-peer network treats every computer as an “equal” so that workstations can store network data and transport it directly to other workstations without passing through a central server.

PYP002 Intro.to Computer ScienceIntroduction to Networks10 Internet Connections  An ISP (Internet Service Provider) is a company that sells access to phone lines or a cable company that sells access to the internet.  A dial-up connection uses standard telephone service to transport data between your computer and your ISP.

PYP002 Intro.to Computer ScienceIntroduction to Networks11 Internet Connections (contd)  A dial-up connection requires a dial-up modem.  Dial-up provides the slowest access, but is typically the least expensive.

PYP002 Intro.to Computer ScienceIntroduction to Networks12 Internet Connections (contd)  Cable Internet Service is offered by cable television companies that serve as ISPs.  DSL (Digital Subscriber line) service requires a DSL modem that connects to standard telephone lines but transmits data at a much higher rate of speed than a dial-up modem.

PYP002 Intro.to Computer ScienceIntroduction to Networks13 Internet Connections (contd)  ISDN (Integrated Services Digital Network) also uses telephone lines.  ISDN is not as fast as DSL or cable Internet service.  T1 service is one of the fastest Internet Connection technologies but is the most expensive.

PYP002 Intro.to Computer ScienceIntroduction to Networks14 Internet Connections (contd)  A Wi-Fi service uses a wireless network to access the Internet.  A public Wi-Fi Service is wireless LAN that provides open Internet access to the public.  The range of network coverage is called a hotspot.

PYP002 Intro.to Computer ScienceIntroduction to Networks15

PYP002 Intro.to Computer ScienceIntroduction to Networks16 E-Commerce  E-commerce typically describes financial transactions conducted electronically over a computer network.  Examples are online shopping, electronic auctions, online banking, and online stock trading.

PYP002 Intro.to Computer ScienceIntroduction to Networks17 E-Commerce (contd)

PYP002 Intro.to Computer ScienceIntroduction to Networks18 Advantages of Computer Networks  Sharing networked hardware can reduce costs.  Sharing networked hardware can provide access to a wide range of services and devices.  Sharing data on a network is easy.  Networks enable people to work together regardless of time and place.

PYP002 Intro.to Computer ScienceIntroduction to Networks19 Disadvantages of a Network  Unauthorized access from many sources and locations could cause Theft of confidential data Introduction and Spreading of “malicious code” or viruses.

PYP002 Intro.to Computer ScienceIntroduction to Networks20 Summary  We discussed 1. What is a network 2. Network Components 3. Types of Network 4. Internet Connections 5. Advantages and Disadvantages of a network.