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CSE 101 – Fall 2007 INTRODUCTION TO COMPUTERS AND INFORMATION TECHNOLOGIES The Internet. Cape Breton, Nova Scotia. Installing SSH for own PC. Lots of software for you to download from school license http://clientsupport.stonybrook.edu/software.shtml Click on “To to Softweb”

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Cse 101 fall 2007 introduction to computers and information technologies the internet l.jpg

CSE 101 – Fall 2007INTRODUCTION TO COMPUTERS AND INFORMATION TECHNOLOGIESThe Internet

Cape Breton, Nova Scotia


Installing ssh for own pc l.jpg
Installing SSH for own PC

  • Lots of software for you to download from school license

    • http://clientsupport.stonybrook.edu/software.shtml

    • Click on “To to Softweb”

      • http://softweb.cc.sunysb.edu/

      • Enter login info:

        • Username: SOLAR ID

        • Password: Your Birthdate (YYMMDD)

      • Once in, click on “SSH”

      • Click on “SSH Win 3.2.9 Client”

      • Run Executable


The internet l.jpg
The Internet

  • The Internet is a network of networks

  • It began in 1969 as ARPAnet (Advanced Research Projects Agency)

  • No central authority and thus impossible to state the precise size

  • When you go online you have access to billions of pages of information and resources, such as:

    • Research on just about any topic

    • Current weather anywhere in the world

    • Travel arrangements

    • Health information

    • Shopping for anything and everything

    • Services

    • And lots more…


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Connecting to the Internet

  • Channels carry digital signals between computers and over the Internet

  • Bandwidth is the number of bits a line can transmit per second

  • Broadband

    • High bandwidth

  • Narrowband

    • Low bandwidth


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Narrowband

  • Dialup Service

    • Available to anyone with POTS

      • Plain old telephone service

      • Data transmissions are up to 56K bps


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Broadband

  • 15 to 30 times faster than narrowband

  • Broadband is always on

  • Broadband options

    • Cable

    • DSL

    • Satellite

    • Wireless


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The Link to the Internet

  • Commercial Information Service

    • AOL is an example

    • Monthly service charge

    • Communications software needed

    • User ID and password


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The Link to the Internet

  • Internet Service Provider

    • Provides access to the Internet

    • Low-speed dialup or high-speed connection

    • ISPs:

      • Commercial Enterprises

      • Colleges

      • Churches


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TCP/IP and Packets

  • TCP/IP is the communications protocol that permits data transmission over the Internet

  • Data is sent in packets

  • Each POP has an IP address for packet delivery


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Going Online Without a PC

  • Go online with your TV

  • Go online with your game device

  • Go online with an Internet appliance

  • Going online with your cell phone


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Retrieving and Viewing Information on the Internet

  • To go online you need a client

  • Internet Explorer or Netscape is a client

  • You can give the browser a URL to find a site or search for a site


The internet address url l.jpg

http://www.annex.com/southwest/museum.htm

Document

Path (Directory or Folder)

Internet Address (Web site)

Means of access,

HyperText Transfer Protocol

The Internet Address: URL


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HTML: Putting the Page Together

  • HTML is a scripting language

  • <HTML> </HTML>

    • Must be at beginning and end of the Web page

  • Head: <Head> </Head>

    • Includes: basic document info

  • Other HTML:

    • <Title></Title>

    • <Body BGCOLOR= “Beige”>

    • <H1></H1>

    • <P>


Internet browsers l.jpg

Tool Bar

Menu Bar

Address Bar

Hyperlink

Status Bar

Internet Browsers


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Concepts and Features

  • Hyperlinks

    • Provide text, graphics, sound, or video links

    • Blue underlined fonts are unexplored

    • Magenta links have been previously accessed

www.microsoft.com

www.microsoft.com


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Internet Servers and Addresses

  • HTTP: Hypertext Transfer Protocol

  • FTP: File Transfer Protocol

  • News: Newsgroups

  • Gopher: Gopher menu tree


Browsers plugins l.jpg

Shockwave Player

Displays Web content

Flash Player

View Flash content

RealJukebox

Play and record MP3 music

LiquidPlayer

Play and record MP3 music

Read lyrics

Organize your music

RealPlayer

Listen to streaming audio

View streaming video

QuickTime

View QuickTime videos

Listen to music

iPIX

View an image from every direction

Acrobat Reader

Displays PDF documents

Browsers Plugins


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Internet Resources and Applications

  • Portals

  • Libraries

  • Online Magazines and Journals

  • Arts

  • Travel

  • Government

  • News

  • And more…


Finding resources l.jpg

Use the Search button on the Internet Explorer Toolbar

Try multiple search engines on one query

Be aware of logical operators - AND, OR, and NOT

Search on a concept: e.g., “first ladies” rather than “Eleanor Roosevelt”

Set Bookmarks/Favorites

Search Engines

www.yahoo.com

www.infoseek.com

www.google.com

www.altavista.com

www.hotbot.com

Lots more…

Finding Resources


Internet applications l.jpg
Internet Applications

  • WWW

    • Internet system

      • User friendly

      • Multimedia

      • Interactive

    • FTP

      • Download files

      • Upload files

    • Webcasting

      • Audio signals


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Communication with People over the Net: E-Mail

Menu Bar

Toolbar

Shortcuts

Inbox

Message

Attachment


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Communication with People over the Net: Audio Mail

Menu Bar

Video

Text Chat

Sound Control

Microphone Control

Type Here


Communication with people over the net l.jpg
Communication with People over the Net

  • USENET Newsgroups

    • Bulletin boards

    • Threads

  • Mailing lists or listservs

    • Subscription service

    • Push technology


Communication with people over the net internet relay chat irc l.jpg
Communication with People over the Net: Internet Relay Chat: IRC

Typed messages

People online

Format choices

Type message


Instant messaging internet telephone l.jpg
Instant Messaging & Internet Telephone IRC

Private

Messages

Video

Audio


Communication with people over the net cybertalk and netiquette l.jpg

Avoid ALL CAPS IRC

Never send spam

Be sensitive

Never send personal information via e-mail

Be patient

Avoid correcting e-mail errors, such as spelling

Honor privacy

Think twice about sending large files

Never forward a virus

Use antivirus software

Communication with People over the Net: Cybertalk and Netiquette


Cruising the net l.jpg

.com IRC

.edu

.firm

.gov

.int

.mil

.net

.org

Cruising the Net

Commercial

Education

Businesses

Government

International

Military

Network Resources

Nonprofit Organizations


Summary l.jpg
Summary IRC

  • The Internet

  • Internet Browsers

  • Internet Resources and Applications


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