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Discovering the internet
 

Discovering the internet

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PACE University - CIS 101 Discovering the Internet

PACE University - CIS 101 Discovering the Internet

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    Discovering the internet Discovering the internet Presentation Transcript

      • Chapter 1
      • Into the Internet
    • Objectives
      Define the Internet
      Describe how the Internet is used
      Discuss the history of the Internet and the World Wide Web
      Describe how individuals and businesses connect to the Internet
      Chapter 1: Into the Internet
      2
    • Defining the Internet
      The Internet is a worldwide network of computers that allows individual and business users to share information and other resources
      The Internet is an interconnected network of networks where each host has a number of other computers connected to it
      Users who connect to the Internet to access information are online
      Chapter 1: Into the Internet
      3
    • Defining the Internet
      Chapter 1: Into the Internet
      4
    • Using the Internet
      • The Internet has profoundly changed nearly every aspect of life by revolutionizing how:
      • People access information for personal and business use
      • Individual shoppers or commercial buyers purchase products and services
      • Students do their school work
      • People communicate with friends, family, colleagues, and others
      • Businesses interact with their customers, vendors, and business partners
      Chapter 1: Into the Internet
      5
    • Using the Internet
      Chapter 1: Into the Internet
      6
    • Using the Internet
      Who Uses the Internet?
      Students
      Businesspeople
      Professionals
      Homemakers
      Retirees
      Hobbyists
      Consumers
      Chapter 1: Into the Internet
      7
    • Using the Internet
      • Internet Activities
      • Browsing and searching for information on the World Wide Web
      • Communicating with others through e-mail, chat, instant messaging, Web-based discussion groups, newsgroups, mailing lists, blogs, and other social media
      • Downloading and uploading files
      • Logging on to remote computers
      • Conducting business activities
      Chapter 1: Into the Internet
      8
    • Using the Internet
      Internet Activities – The World Wide Web
      Web pages – created using HTML or Web authoring software and connected by hyperlinks
      Web site – collection of related Web pages
      College, university, corporate, retail, non-profit, personal
      Web server – computer on which Web pages are stored
      Web browser – software used to view Web pages
      Used to browse or "surf" the Web
      Chapter 1: Into the Internet
      9
    • Using the Internet
      Chapter 1: Into the Internet
      10
    • Using the Internet
      Chapter 1: Into the Internet
      11
    • Using the Internet
      Internet Activities (cont'd)
      Search tools
      Web-based resource to help find specific information on the Web
      Chapter 1: Into the Internet
      12
    • Using the Internet
      Internet Activities (cont'd)
      E-mail – users send and receive text with or without attached files
      Instant messaging (IM) – two or more users take turns exchanging brief messages
      Internet Relay Chat (IRC) or chatting – users type text into a chat window; all users can see what other users type
      Newsgroups and mailing lists – users subscribe to a newsgroup discussion or mailing list on a certain topic and receive messages about that topic
      Social media – users share information, photos, links, and personal commentary using a variety of online tools
      Chapter 1: Into the Internet
      13
    • Using the Internet
      Internet Activities (cont'd)
      Downloading and uploading files – using FTP to send or retrieve electronic files from a server
      Music, video, data
      Logging on to a remote computer – using Telnet to log on to a remote computer to use its processing power
      Chapter 1: Into the Internet
      14
    • Using the Internet
      Chapter 1: Into the Internet
      15
    • Using the Internet
      Internet Activities (cont'd)
      Conducting business activities
      E-commerce
      E-business models
      B2C
      B2B
      B2E
      C2C
      Chapter 1: Into the Internet
      16
    • History of the Internet
      Origins in ARPANET
      Department of Defense founded ARPA to promote computer and scientific research
      J.C.R. Licklider headed computer and information research
      Leonard Kleinrock developed packet switching
      ARPANET – prototype network connecting ARPA and university research centers
      Chapter 1: Into the Internet
      17
    • History of the Internet
      • Growth and Development of ARPANET
      • Ray Tomlinson developed e-mail (1971)
      • Vinton Cerf and Robert Kahn developed standard or protocol for communications over a network TCP and IP (1972)
      • Beyond Research, to the Public
      • NSFnet replaced ARPANET (1985)
      • Congress authorized commercial activity on the NSFnet (1992)
      • NSFnet moved connections to commercial network providers (1995)
      Chapter 1: Into the Internet
      18
    • History of the Internet
      Chapter 1: Into the Internet
      19
      The Beginnings and Rise of the Web
      Gopher at University of Minnesota
      Directory-based system
      Made it easier to find documents on Internet-connected servers
    • History of the Internet
      The Beginnings and Rise of the Web (cont'd)
      Tim Berners-Lee (1991)
      Hypertext Markup Language (HTML)
      Hypertext Transfer Protocol (HTTP)
      First Web browser and Web server
      Marc Andreessen and Eric Bina (1993)
      Mosaic browser
      Marc Andreessen and Jim Clark (1994)
      Netscape Navigator browser
      Chapter 1: Into the Internet
      20
    • History of the Internet
      Chapter 1: Into the Internet
      21
    • History of the Internet
      The Beginnings and Rise of the Web (cont'd)
      New research networks
      Internet2 (I2)
      CANARIE
      Chapter 1: Into the Internet
      22
    • Connecting to the Internet
      Internet Service Providers (ISPs)
      Provide access to the Internet
      Considerations for choosing an ISP
      The speed or bandwidth of the connection
      The type of connection and cost of service
      Availability of customer service and technical support
      Chapter 1: Into the Internet
      23
    • Connecting to the Internet
      Chapter 1: Into the Internet
      24
    • Connecting to the Internet
      Connection Methods
      Dial-up access
      Computer uses standard telephone lines and a modem to access the Internet
      Mostly home users
      Two types:
      Regular dial-up
      High-speed dial-up
      Chapter 1: Into the Internet
      25
    • Connecting to the Internet
      Connection Methods (cont'd)
      Digital Subscriber Line (DSL)
      An “always on” high-speed Internet connection over standard telephone lines
      Broadband transmission splitting telephone wire into data and voice
      Requires firewall protection to prevent intrusion by outsiders
      Home
      Businesses
      Chapter 1: Into the Internet
      26
    • Connecting to the Internet
      Connection Methods (cont'd)
      Cable
      An “always on” high-speed Internet connection over cable TV lines
      Cable modem and line splitter required
      Firewall protection needed
      Chapter 1: Into the Internet
      27
    • Connecting to the Internet
      Connection Methods (cont'd)
      Fixed wireless connections
      Microwave
      Line-of-sight transmission
      Chapter 1: Into the Internet
      28
    • Connecting to the Internet
      Connection Methods (cont'd)
      Fixed wireless connections (cont'd)
      One way or two way satellite transmissions
      Chapter 1: Into the Internet
      29
    • Connecting to the Internet
      • Connection Methods (cont'd)
      • Mobile Wireless
      • Wireless fidelity (Wi-Fi) technologies to connect to networks
      • Wireless access point – hardware that connects wireless devices to a network
      • Hotspot – specific geographic location in which a wireless access point provides public Internet access
      Chapter 1: Into the Internet
      30
    • Connecting to the Internet
      Connection Methods (cont'd)
      Mobile Broadband (cont'd)
      GSM/GPRS card installed in a computer to allow it to connect to a wireless network
      Cell phones, smartphones, or PDAs can connect to the Internet
      High-Speed Business Connections
      Businesses typically use high-speed fiber-optic cable such as a T1 line connected to their local area network to provide Internet access to employees
      Chapter 1: Into the Internet
      31
    • Connecting to the Internet
      Chapter 1: Into the Internet
      32
      • Chapter 1
      • Complete