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					The Internet and World Wide Web
           and Email


Welcome to Cyberspace

            By
     Robert T. Grauer
     Maryann Barber

     Modified by Lin
    Objectives
   Define the Internet and give a brief overview of its history
   Briefly introduction TCP/IP
   Describe various buttons on the Internet Explorer toolbar
   Explain how to save the address of a favorite Web site
   Describe how to safeguard a system through acquisition of an anti-virus program
    and through systematic backup
   Distinguish between the Boolean operations And, Or, and Not
   Describe the structure of a Web address
   Download a graphic from the Web
   Draw several parallels between e-commerce and traditional commerce
   Distinguish between the http and https protocol; define a cookie and explain how
    it is a potential threat to individual privacy
   Create a Web Page (HTML document) using Microsoft Word
   Describe Email
The Internet

   A network of networks
   Began in 1969 as ARPAnet
    (Advanced Research Projects
    Agency)
   No central authority and thus
    impossible to state the precise size
   The Internet is not free just
    because you do not pay for it
         Internet Applications (1)
   E-mail: is a means of communication on the
    Internet, and one of the first applications on it.
   Telnet: or remote login, allows your computer to
    login to a remote computer and act as though it
    were a local terminal attached to that computer.
   Ftp allows you to transfer files from or to a remote
    computer. It is commonly used to download
    software. ftp sites can be accessed with URL
    starting with ftp (e.g. ftp://ftp.stfx.ca)
         Internet Applications(2)
   Newsgroups: use Usenet to share discussions on a
    specific topic. Ex: rec.arts.books is a group for the
    discussion of books and book reviews.
    xnews.stfx.ca is a newsgroup in St.F.X for class
    discussion, and general information about the
    University.
   WWW: provides access to a rich universe of
    information and computer data, and is the basis for
    much of today's Internet activity
How Internet Works (TCP/IP)

   Transmission and control protocol
   Internet Protocol
WWW

   An Internet application
The World Wide Web

   A subset of the Internet consisting of all
    computers with hypertext or hypermedia
    documents
   These documents contain references
    (links) to other documents which may be
    on a different computer anywhere in the
    world
   Began in 1991 at the European Particle
    Physics Laboratory (CERN) in Switzerland
Acronyms Abound

   HTTP – HyperText Transfer Protocol
    is used to transmit Web documents
   HTTPS – Secure protocol for
    confidential transactions
   HTML – HyperText Markup
    Language is the language for all
    Web Documents
   ISP – Internet Service provider
Connecting to the Internet
   At Work or School          My Connection
       Via a Local Area           Via the university’s
        Network                     network connection
   At Home                         in the dorm
       Traditional Modem          Via Ethercard
        (56KB)                      connected to the
                                    Data Jack via
       Cable Modem                 network cable
       DSL Modem
Microsoft Internet Explorer
    Menu Bar          Toolbar
       File              Back Button

       Edit              Forward Button

       View              Stop

       Favorites         Refresh

       Tools             Home

       Help              Search

    Address Bar          Favorites

       URL               History
                   Tool Bar




     Address Bar


                   Hyperlinks




Status Bar
Uniform Resource Locator (URL)

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

                                          Document

                            Path (Directory or Folder)

          Internet Address (Web site)

   Means of access,
   HyperText Transfer Protocol
    Examples of URLs

   Microsoft: www.microsoft.com
   University: www.miami.edu
   Grauer Site: www.prenhall.com/grauer
   General reference: www.refdesk.com
   Anti-virus updates: www.symantec.com
   Download software: www.tucows.com
   You can guess at the URL using the
    general form: www.company.com
    Hyperlinks
   Provide text, graphics, sound, or video links




   Blue underlined fonts are unexplored
                    www.unexplored.link

   Magenta links have been previously accessed
                     www.explored.link
        Returning to a Previous Site

   Back Button
       Returns to
        pages in this
        session
   Favorites List
       Returns to
        selected
        pages
   History List
       Returns to
        pages from
        previous
        sessions
    Search Engines


   A program that systematically searches the
    Web for documents on a specific topic
   Uses a key word or words as a query
   Several search engines are available
   Each search engine has its own database
   No search engine is best
   Uses Boolean (logical) operators
   Returns “hits” or documents once search has
    been submitted
Click the Search Button
                    • Relevant sites
                      (hits) are
                      shown in left
                      pane; selected
                      page is in the
                      right pane
                    • Repeat the
                      search with
                      multiple
                      engines for
                      other pages
Popular Web Search Engines
http://www.altavista.com/    http://www.msn.com/


http://www.go.com/           http://www.excite.com/


http://www.lycos.com         http://www.askjeeves.com/


http://www.webcrawler.com/   http://www.google.com/


http://www.yahoo.com         http://www.search.com/
Suggestions for Searching

   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
E-commerce

   The exchange of goods and services
       Buyer and seller
       Products and suppliers
       A place to “meet”
       Marketing to attract the buyer
       Accept and process the order
   All of these elements are present in
    e-commerce and traditional
    commerce
Advantages of E-commerce
   For the Seller                For the Buyer
       Open 24/7                     Open 24/7
       Shoppers from                 Never leave home
        anywhere                      Easy to view and
       Virtual inventory is           explore product
        cheaper and                    line
        extensive                     Comparison shop
       Lower transaction             Web site knows
        costs                          you
       Target your
        customers
Security and Privacy

   Secure transactions
       Https protocol
       Encryption
   Privacy
       Cookie is a small file written to your
        disk each time you visit a site
       Problem is when one site can read
        many cookies, e.g., Double Click.com
Creating a Web Page

                      • Use Word to
                        create the
                        document
                      • Use the
                        Save As Web
                        Page
                        command to
                        convert to
                        HTML
                      • Upload to a
                        Web server
Email
     Electronic Mail (E-mail)

   E-mail is sending messages via
    computer
   Business is using more e-mail and fax
   To access you must have a mail server
    and software
   Each person has a username and
    password
   All mail programs allow you to Send,
    Compose, Reply and Forward, Delete
 E-mail Protocols
POP Client --Post Office Protocol
•Mail is read composed and stored locally
•Can work off-line
IMAP --Messages stored remotely
•Stored on a server
•Download for local storage
SMTP --Simple Mail Transfer Protocol
•The protocol required to send mail messages
through the Internet
        Email
   To connect to your Mailbox:
       Double-click the Outlook Web EMAIL icon
       This opens to the StFX Web Mail page in IE
       Mailbox Window:Toolbar, Outlook bar,
        Navigation toolbar, and messages in bottom
   # read and # unread messages
        Send a Message

   To send an email, you need to know
    the mail address, ex: mlin@stfx.ca;
   Click on New message button
    Look at
       To: the address of the recipient
       CC: send copies to others
       Subject: message contents
   Type the subject and contents, click
    Send.
Reply to a Message

   Click on message header you want
    to reply to, click Reply button –
    Reply to sender
       can also Reply to All
   Go to message section and add
    your text wherever you want
   Click on Send button
      Forward a message

   Click on the message header you want
    to forward
   Click on Forward button
   Put in the To: the mail address you
    want to forward to, you can change
    subject box
   You can add a message to the
    message section;
   Click Send button.
Attaching files to your mail

   Begin composing a new letter
   Click on Attachments link, or
    Attachments button on the
    toolbar.
   Your attachment is usually a file
    that you either know the path name
    for or you can browse for it.
   Fill in other sections as usual and
    click Send.
Reading messages with
attached files

   Click on attachment in message
    window
   Message is directly readable with
    the same systems on sending and
    receiving end
   When receiving on some systems,
    attachments may have to be saved
    first and read later with the correct
    software application.
Mail Folders

   You can organize your messages in
    folders
   Click on Folders button in the
    Outlook bar and show the various
    folders you have available
   Some predefined folders: Trash,
    sent, personal, drafts, inbox
   Create folders
   Move messages to a certain folder
Filing Messages to a Folder

   To create a mail folder in your mailbox,
    right-click on the parent directory and
    choose Create New. A text box opens
    for you to name the new folder which will
    be a sub folder.
   File messages to the selected folder.
   The message is deleted from the inbox
    and now appears in the folder you have
    chosen.
      Removing Messages
   Sending unwanted messages to the
    Trash folder
   Click on header and then click on Delete
    button
   If more than one letter is to be deleted,
    hold down the CTRL key and then click
    succeeding headers to select them
      Contacts
   Adding names to your Contact list
   Click on the Contact button on the toolbar
    or the Contact icon in the Outlook bar, Fill
    in all the information.
Using the address book

   While addressing a message: click the Contact
    button and select the person, click on To: or CC:,
    click on OK
   If you simply want to send the message to
    multiple persons, simply click on the line below
    the previous address and either type the address
    or insert it from address book after the TO:
    appears.

   Instant Address – copying the address from a
    message directly into your address book
    Summary
   The Internet is a network of networks
   Internet Explorer/Netscape Navigator are browsers
   URL is located in the Address Bar
   Connect through ISP or LAN
   Search Engines are the tools to find information
   Learn to use keywords for searching
   Use multiple search engines
   Searches are based on Boolean operators
   Web documents are written in HTML
   The Save As Web Page command converts a Word
    document to HTML
   Emails and contacts

				
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