Embed Size (px)
Citation preview
ITBIS 105ITBIS 105
The Internet andThe Internet and World Wide Web
The Internet
What is the Internet?Worldwide collection of networks that connects
millions of computers
MIS Dept. ITBIS 105 2
History of the Internet
How did the Internet originate?
ARPANET
Networking project by Pentagon’s Advanced
Research Projects Agency (ARPA)Goal:
To allow scientists
Became
To allow scientists at different
locations to share information
Became functional
September 1969
MIS Dept. ITBIS 105 3
History of the Internet
How has the Internet grown?
TodayMore than 150 million host nodes
1969Four host nodes
MIS Dept. ITBIS 105 4
History of the Internet
Who controls the Internet?
No one—cit is a public, cooperative, andindependent network
MIS Dept. ITBIS 105 5
How the Internet Works
How can you connect to the Internet?
High-speed connectionHigh-speed connection
Slow-speed technologySlow-speed technology
Dial-up accessmodem in your computer uses a
Dial-up accessmodem in your computer uses a
Digital subscriber line (DSL),cable telephone Internet
services (CATV) cable modem
Digital subscriber line (DSL),cable telephone Internet
services (CATV) cable modempstandard telephone line to connect to the Internet
pstandard telephone line to connect to the Internet
services (CATV), cable modem provide connections using
regular copper telephone lines
services (CATV), cable modem provide connections using
regular copper telephone lines
C i i lC i i lC i b bli h dC i b bli h d Connection is always on—whenever the computer
is running
Connection is always on—whenever the computer
is running
Connection must be established each time you log on.Slow but inexpensive
Connection must be established each time you log on.Slow but inexpensive
MIS Dept. ITBIS 105 6
The World Wide Web
What is the World Wide Web (WWW)?
A worldwide collection of electronic documents
Also called the Web
Each electronic document is called a Web page
Also called the Web
Each electronic document is called a Web page
Can contain text graphics sound video and animationCan contain text, graphics, sound, video, and animation
A W b it i ll ti f l t d W b
MIS Dept. ITBIS 105 7
A Web site is a collection of related Web pages
The World Wide Web
What is a home page? The first page that a Web site presents p g p Often provides connections to other Web pages
MIS Dept. ITBIS 105 8
The World Wide Web
What is a Web browser? Program that allows you to view Web pages
MicrosoftInternet
g y p g
InternetExplorer
Netscape
Mozilla
MIS Dept. ITBIS 105 9
Elements of a Web browser
Menu BarMenu Bar
ToolbarToolbarToolbarToolbar
URL BarURL Bar
WorkspaceWorkspace Status BarStatus Bar
MIS Dept. ITBIS 105 10
Internet Service Provider (ISP)
Internet Service Provider (ISP), is any company thatprovides individuals and organizations with access toprovides individuals and organizations with access toor presence on the Internet.
E. g. Batelco.
MIS Dept. ITBIS 105 11
The World Wide Web
How can you establish a connection and start theWeb browser?
Step 2.If necessary, connect to the Internet
Step 1.
Step 3.Connection to the Internet occurs, and a home page displays
Click the Web browser program name
MIS Dept. ITBIS 105 12
p g p y
The World Wide Web
What is downloading? The process of a computer receiving informationp p g
The transmission of information from a local computer t t t i ll d U l dito a remote computer is called Uploading.
MIS Dept. ITBIS 105 13
The World Wide Web
What is a URL?Unique address for aUnique address for a Web page
MIS Dept. ITBIS 105 14
The World Wide Web
What is a hyperlink (link)? Built-in connection to another related
Item found elsewhere W b
Web page location
on same Web page Different Web page
at same Web site Web page at a different
Web site
MIS Dept. ITBIS 105 15
The World Wide Web
How can you recognize links? Pointer changes to a small hand
A li k b t t
gwhen you point toa link
A link can be text or an image
Text links are Text links areusually underlinedand in a differentcolor
MIS Dept. ITBIS 105 16
The World Wide Web
What is a search engine? Program used to find g
Web sites and Web pages by entering words or phraseswords or phrases called search text Also called a keywordAlso called a keyword
MIS Dept. ITBIS 105 17
The World Wide Web
What is a portal? A Web site that offers a variety of services from one, y
convenient location, usually for free E. g. Yahoo
MIS Dept. ITBIS 105 18
The World Wide Web
What is multimedia? Application integrating text with other media elementspp g g Graphics Animation Audio Video
MIS Dept. ITBIS 105 19
The World Wide Web
What is animation? Appearance of motion created bypp y
displaying a series of still imagesin sequence
MIS Dept. ITBIS 105 20
The World Wide Web
What is audio? Music, speech, or any other sound, p , y
Common Web audio file formats are MP3, WAV, WMA (Windows Media
di ) l di dAudio), MPEG, RealAudio, and QuickTime
MIS Dept. ITBIS 105 21
The World Wide Web
What is streaming audio? Transfers data in a
continuous and even flow Enables you to listen
t th d itto the sound as it downloads to your computer.p
MIS Dept. ITBIS 105 22
Other Internet Services
What are some services found on the Internet?4. Chat1. E-mail
2. Web3. Message board
5. File transfer6. Instant messaging
(4)
(1)
(3) (5)
MIS Dept. ITBIS 105 23
(2) (6)
Other Internet Services
What is e-mail? Short for electronic mail The transmission of messages and files via a computer
network Messages can consist of simple text or can contain attachments,Messages can consist of simple text or can contain attachments,
such as documents, graphics, or audio/video clips Internet access providers usually provide an e-mail program Some Web sites such as MSN Hotmail and Yahoo! provide Some Web sites—such as MSN Hotmail and Yahoo!—provide
free e-mail services
MIS Dept. ITBIS 105 24
Other Internet Services
How do you send an e-mail message?Step 2.
Step 1.Start an e-mail program (Microsoft Outlook for
Step 2.Click the New Mail Message button
Outlook, for example)
Step 3Step 3.Enter the recipient’s e-mail address, the subject, and the message
Step 4.
Step 5.The recipient opens the message
MIS Dept. ITBIS 105 25
Step 4.Click the Insert file button if you want to attach a picture, for example, and click Send
g
Other Internet Services
What is an e-mail address? Unique name that consists of a user name and domain q
name that identifies the user
MIS Dept. ITBIS 105 26
Other Internet Services
What is a chat? Real-time typed conversation yp
that takes place on a computer Chat room is location on
th t itserver that permits users to discuss topics of interest
MIS Dept. ITBIS 105 27
Other Internet Services
What is FTP? File Transfer Protocol—Internet standard that allows
you to upload and download files with other computers on the Internet
MIS Dept. ITBIS 105 28
Other Internet Services
What are newsgroups and message boards? Newsgroupg p Online area where users discuss a particular subject
Message board Type of discussion group Many Web sites use
message boards because they are
yp g p
because they are easier to use
MIS Dept. ITBIS 105 29
Other Internet Services
What is a mailing list? Group of e-mail
addresses given a single name
When a message is sent When a message is sent to the mailing list, everyone on the list receives the messagereceives the message
To add your name to a mailing list you must subscribe to it; to remove
t b ibyour name you must unsubscribe
MIS Dept. ITBIS 105 30
Other Internet Services
What is instant messaging (IM)?A l i I i i i h ifi h A real-time Internet communications service that notifies you when one or more people are online and allows you to exchange messages or files
MIS Dept. ITBIS 105 31
Electronic Commerce
What is e-commerce? Short for electronic commerce Business transaction that occurs over
the Internet
Business to consumer (B2C)Sale of goods to general public
Consumer to consumer (C2C)One consumer sells directly to another
Business to business (B2B)Business providing goods and
services to other businesses
MIS Dept. ITBIS 105 32
