Introduction of Web and Networking

1. Session No 2
The Internet and
World Wide Web
11/27/13
Developed By: Saif Ullah Dar
1

2. Chapter 2 Objectives
Discuss how the Internet works
Define Webcasting
Understand ways to access the
Internet
Describe the uses of electronic
commerce (e-commerce)
Identify a URL
Identify the tools required for
Web publishing
Know how to search for
information on the Web
Describe the types of Web
pages
Explain how e-mail, FTP,
newsgroups and message
boards, mailing lists, chat rooms
and instant messaging work
Identify the rules of netiquette
Next
p. 2.2
Recognize how Web pages use
graphics, animation,audio,
video, and virtual reality
11/27/13
Developed By: Saif Ullah Dar
2

3. The Internet
What is a network?

A collection of
computers and
devices connected
together via
communications
devices and media
• Modems
• Cables
• Telephone lines
• Satellites
Next
p. 2.2
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Developed By: Saif Ullah Dar
3

4. The Internet
What is the Internet?


Also called the Net
A worldwide
collection of
networks that links
millions of
businesses,
government
agencies, educational
institutions, and
individuals
Next
p. 2.2
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Developed By: Saif Ullah Dar
4

5. The Internet
What are some of the services found on the
Internet?
instant messaging
e-mail
Web
message board
chat
file transfer
Next
p. 2.3 Fig. 2-1
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Developed By: Saif Ullah Dar
5

6. History of the Internet
How did the Internet originate?
ARPANET
Networking project
by Pentagon’s
Advanced Research
Projects Agency
(ARPA)
Next
p. 2.3
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Goal:
To allow scientists
at different locations
to share information
and work together
on military and
scientific projects
Goal:
To function even if
part of the network
were disabled or
destroyed Ullah Dar
Developed By: Saif
Became
functional
in
September
1969
6

7. History of the Internet
What is a host node?





Next
p. 2.4
University of
California at
Los Angeles
Also called a host
Any computer that
Stanford
directly connects to a
Research
network
Institute
Often stores and
University of
transfers data and
California at
messages
Santa Barbara
Provides network
University of
connections for other
Utah
computers
Four original nodes
on ARPANET
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Developed By: Saif Ullah Dar
7

8. History of the Internet
How has this network grown?
Today
More than 100 million host nodes
1984
More than 1,000 host nodes
1969
Four host nodes
Next
p. 2.4
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Developed By: Saif Ullah Dar
8

9. History of the Internet
What is NSFnet?
The National Science Foundation’s network
 Five supercomputer centers
 Connected to ARPANET in 1986

NSFnet
ARPANET
The Internet
Next
p. 2.4
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Developed By: Saif Ullah Dar
9

10. History of the Internet
Who provides the structure for the Internet today?
Networks from
corporations,
commercial
firms, and other
companies
Telephone
companies
Satellite
companies
Cable
companies
Government
Next
p. 2.4
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Developed By: Saif Ullah Dar
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11. History of the Internet
Who controls the Internet?
The Internet is a public, cooperative, and
independent network
 No single entity controls or owns the Internet
 Several organizations advise and define
standards

World Wide Web
Consortium (W3C)
• Oversees research and
Next
p. 2.4
sets standards and
guidelines
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Internet2 (I2)
• Internet-related research
and development project
• Develops and tests
advanced Internet
technologies
Developed By: Saif Ullah Dar
11

12. Technology Trailblazer
Tim Berners-Lee

Created the World Wide Web

Director of the
World Wide Web
Consortium
(W3C) at MIT
Click to view Web Link
then click Tim Berners-Lee
Next
p. 2.4
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Developed By: Saif Ullah Dar
12

13. How the Internet Works
What is an Internet service provider (ISP)?


A business that
has a permanent
Internet
connection
Provides
temporary
connections to
individuals and
companies for free
or for a fee
Next
p. 2.5
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Regional ISP
Provides access to the
Internet through one or
more telephone numbers
local to a specific
geographic location
National ISP
Provides local telephone
numbers in most major cities
and towns nationwide
May also provide a toll-free
Developed By: Saif Ullah Dar number
13

14. How the Internet Works
What is a point of presence (POP)?
An access
point on the
Internet
Next
p. 2.5
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Accessed by
dialing a
telephone
number
Select a service
provider with at
least one local
POP telephone
number
Developed By: Saif Ullah Dar
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15. How the Internet Works
What are other service providers?
Online Service
Provider (OSP)
• Supplies Internet
access
• Has many membersonly features that
offer special content
Wireless Service
Provider
• Company that
provides wireless
Internet access
Click to view Web Link
then click Service Providers
Next
p. 2.5
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16. Company on the Cutting
Edge
America Online



World’s leading online service provider
Services include electronic
mail, software, computer
support services,
Internet access
Founded in 1985
by Stephen M.
Case
Click to view Web Link
then click AOL
Next
p. 2.6
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Developed By: Saif Ullah Dar
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17. How the Internet Works
What are ways to access the Internet?
1 Regional
Internet
Service
2 National
Provider’s
Internet
POP
Service
3 Online
Provider’s
Service’s
POP
Local POP
4 Wireless
Online Service
Internet
(special
Service
members-only
content)
Provider
2
1
3
4
local call
local call
Next
p. 2.5 Fig. 2-2
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long-distance call
Developed By: Saif Ullah Dar
local call
toll-free call
toll-free call
local 17
call

18. How the Internet Works
How can you connect to the Internet?
High speed connection
• Employees and students
• Computers part of a local area network (LAN)
• Connect to service provider through a high-speed connection
line leased from local telephone company
Dial-up access
• Home or small business
• Computer, modem, regular telephone line
• Dial into an ISP or OSP
Newer high-speed technologies
• Home and small business
• Digital subscriber line (DSL) – provides high-speed Internet
Next
p. 2.6
connections over regular copper telephone line
Developed By: Saif Ullah Dar
• Cable11/27/13
modem- provides high-speed Internet
connections through cable television network
18

19. How the Internet Works
What are three parts of an Internet connection?
Server
• Computer that
•
•
manages the
resources on a
network
Provides a
centralized storage
area for resources
such as programs
and data
Also called a host
computer
Backbone
• Inner structure
•
of the Internet
Communications
lines that carry
the heaviest
amount of traffic
Client
• Computer that
can access the
contents of the
storage area
on the server
Click to view
Web Link
then click Internet Backbone
Next
p. 2.6
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20. How the Internet Works
1: You initiate an
How might
data travel the Internet using a telephone line
action to request
Regional
2: Aconnection?
modem the
data from converts
3:
4:
5:
6:
7:
8:
the digital signals
Internet.
Data the computer
from (request)
travels through
into analog signals,
Data may pass to a
telephone
which are lines
through one or
local ISP. by
understood
The regional ISP
more routers
telephone lines.
uses lines, leased
before reaching its
The national ISP
from destination.
final a telephone
routes data across
company, tofrom a
Data moves send
the country to a local
dataserver retrieves
national ISP to
The to a national
another national
ISP.and then to a
ISP
the requested data
ISP.
destinationit back
and sends server.
through the Internet
backbone to your
computer.
Step 1
ISP
Step 5
Step 2
Step 4
National
ISP
Local ISP
Step 6
Internet
backbone
Step 8
Step 7
Next
p. 2.7 Fig. 2-3
Step 3
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Developed By: Saif Ullah Dar
20
National ISP

21. How the Internet Works
What is an Internet protocol (IP) address?



Number that uniquely identifies each computer or
device connected to the Internet
Four groups of numbers, each separated by a period
Number in each group is between 0 and 255
IP address
199.95.72.10
last part
identifies
specific
computer
first part
identifies
network
Next
p. 2.8 Fig. 2-4
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21

22. How the Internet Works
What is a domain name?



Text version of an IP address
Components are separated by periods
Each domain name represents one or more IP
addresses
IP address
Domain name
199.95.72.10
www.scsite.com
Next
p. 2.8 Fig. 2-4
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Developed By: Saif Ullah Dar
22

23. How the Internet Works
What is a top-level domain (TLD) abbreviation?
 Identifies the type of organization associated
with the domain
 Sometimes called dot com when TLD is com
Next
p. 2.8 Fig. 2-5
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23

24. How the Internet Works
What systems control domain names?
Internet Corporation for Assigned
Names and Numbers (ICANN)
Group that assigns and controls TLDs
Domain name system (DNS)
System on the Internet that stores the
domain names and their corresponding
IP addresses
Next
p. 2.8
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DNS server
Translates the domain
name into its associated IP
Developed By: Saif Ullah Dar address
24

25. The World Wide Web
What is the World Wide Web (WWW)?






Also known as the Web
A worldwide collection of electronic documents
Each document on the Web is called a Web page
Can contain text, graphics, sound, and video
Can contain built-in connections to other documents
A Web site is a collection of related Web pages
Next
p. 2.9
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25

26. The World Wide Web
What is a Web browser?
Also called a browser
 Software
program that
allows you to
access and
view Web
pages
 Two popular
browsers for
personal
computers
• Netscape
Next
• Internet
p. 2.9 Fig. 2-6
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Explorer

Developed By: Saif Ullah Dar
26

27. The World Wide Web
Step 1
How can you establish a connection and start the Web
1 Double-click
browser? an
Step 2
icon on the
desktop, such as
2 Internet Explorer,
If you are not
connected to
to start your the
Internet already,
browser.
3 Connection to the
your computer
Internet occurs
attempts to
and a home page
establish a
displays. Shown a
connection with
here is an AOL
service provider.
home page. Your
If necessary, click
home page may
the Connect
vary.
button.
Internet
Explorer icon
Next
p. 2.10 Fig. 2-7
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Step 3
Developed By: Saif Ullah Dar
27

28. The World Wide Web
What is a home page?




Next
p. 2.10
Starting page for a browser
Provides
information
about the site’s
purpose and
content
Some Web sites
also refer to their
starting page as
a home page
May be changed
at any time
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Developed By: Saif Ullah Dar
28

29. The World Wide Web
What is downloading?
The process of receiving
information, such as a Web
page, onto your computer
from a server on the Internet
Can take from a few seconds
to several minutes
Next
p. 2.11
You can speed up the display of pages by
turning off the graphics and displaying only
text in most Web browsers
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Developed By: Saif Ullah Dar
29

30. The World Wide Web
How do Web-enabled handheld computers and
devices access the Web?



Use a special type
of browser
designed for their
small screens
Microbrowser –
software program
that accesses and
displays Web pages
that contain mostly
text
Also called a
minibrowser
Next
p. 2.11 Fig. 2-8
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Microbrowser for a
Web-enabled
cellular telephone
Microbrowser for a Webenabled Developed By: Saif Ullah Dar
handheld computer
30

31. The World Wide Web
What is a hyperlink?
Also called a link
 Built-in
connection to
another related
Web page or part
of a Web page
 Allows you to
obtain information
Click to
view
in a nonlinear way
animation

Next
p. 2.12
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31

32. The World Wide Web
How can you identify a link?




Next
p. 2.12

Link can be a word, phrase, or image
Text links usually are underlined or in a color
different from the rest of the document
A graphical link may change its appearance when
you point to it
The shape of the pointer on
the screen changes to a
small hand with a pointing
index finger when you
position it on a link or
point to the link
Click the link to activate it
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Developed By: Saif Ullah Dar
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33. The World Wide Web
How do you navigate a variety of links?
Some links
display a
different color
Some links are
when you point
underlined.
to them. Clickto
Click the link
Some links are
the link the
display to
graphical
display its
associated
images. Click
associated
Web site or
the link to
Web site or
page.
display its
Web page.
associated
Web site or
Web page.
pointer
Next
p. 2.12 Fig. 2-9
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33

34. The World Wide Web
What is surfing the Web?
Links can point to an item on the same Web
page, a different Web page at the same Web site,
or a separate Web page at a different Web site in
another city or country
 The activity of jumping from
one Web page to another is
surfing

Next
p. 2.12
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Developed By: Saif Ullah Dar
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35. The World Wide Web
What is a Uniform Resource Locator (URL)?




Unique address for a Web page
Browser retrieves a Web page by using the URL
Also called a Web address
Type the URL into the address text box on the browser
and press the Enter key to display a Web page
http://www.nationalgeographic.com/travel/index.html
Next
p. 2.13 Fig. 2-10
11/27/13
address
address
text box
Developed By: Saif Ullahbox
text Dar
35

36. The World Wide Web
What are the parts of a URL?
protocol
domain name
path
http://www.nationalgeographic.com/travel/index.html
Click to view Web Link
then click URLs
Next
p. 2.13 Fig. 2-10
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36

37. The World Wide Web
What is a Web server?
A computer that delivers (serves)
Web pages you request
 The same Web server can store
multiple Web sites

http://www.nationalgeographic.com/travel/index.html
Next
p. 2.13 Fig. 2-10
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37

38. The World Wide Web
What is a search engine?

A software program you can use to find Web
sites, Web pages and Internet files
Search text
A word or phrase
entered in the search
engine’s text box
Also called keywords
Click to
view video
Next
p. 2.14
11/27/13
Spider
A program that reads
pages on Web sites in
order to find Web
pages that contain the
search text
Also called a crawler
Developed By: Saif Ullah Dar
or bot
38

39. The World Wide Web
What is a hit?

Any Web page name that
lists as the result of a
search
363 hits
hit
Next
p. 2.14 Fig. 2-11
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40. The World Wide Web
What are some
widely used
search engines?
Next
p. 2.15 Fig. 2-12
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40

41. The World Wide Web
What is a directory?



An organized
set of topics
Used by a
search engine
to aid in
locating Web
sites
Each major
topic has
related
subtopics
Next
p. 2.15 Fig. 2-13
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41

42. The World Wide Web
What are the six basic types of Web pages?
advocacy
Web page
news
Web page
business/marketing
Web page
informational
Web page
portal
Web page
personal
Web page
Next
p. 2.16
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43. The World Wide Web
What is an advocacy Web page?


Next
Contains
content that
describes a
cause,
opinion,or
idea
Purpose is to
convince the
reader of the
validity of the
cause,
opinion, or
idea
p. 2.16 Fig. 2-14a
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Developed By: Saif Ullah Dar
43

44. The World Wide Web
What is a business/marketing Web page?


Contains
content that
promotes or
sells
products or
services
Often allows
you to
purchase
products or
services
online
Next
p. 2.16 Fig. 2-14b
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44

45. The World Wide Web
What is an informational Web page?
Contains
factual
information
 Many U.S.
government
sites
provide
information

Next
p. 2.16 Fig. 2-14c
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45

46. The World Wide Web
What is a news Web page?


Contains
newsworthy
material
Stories and
articles relating
to current
events, life,
money, sports,
and the
weather
Next
p. 2.16 Fig. 2-14d
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46

47. The World Wide Web
What is a portal Web page


Often called a
portal
Offers a variety
of Internet
services from a
single,
convenient
location
Next
p. 2.16 Fig. 2-14e
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47

48. The World Wide Web
What services are often found on a portal?
search
engine
local ,
national, and
worldwide
news
e-mail
sports and
weather
free
personal
Web pages
Next
p. 2.17
11/27/13
maps
stock
quotes
instant
messaging
newsgroups
or message
boards
reference
tools
shopping
malls and
auctions
chat rooms
calendars
Developed By: Saif Ullah Dar
48

49. The World Wide Web
What is a Web community?
A Web site that joins a specific group of
people with similar interests or relationships
 Usually offer special services to facilitate
communication among members

newsgroup
or message
board
Next
p. 2.17
11/27/13
e-mail
online
photo
albums
Developed By: Saif Ullah Dar
chat
room
49

50. The World Wide Web
What is a wireless portal?



A portal specifically designed
for Web-enabled handheld
computers and devices
Attempts to provide all
information a wireless user
might require
Services include search
engines, news, stock quotes,
weather, maps, e-mail,
calendar, instant messaging,
and shopping
Next
p. 2.17
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Developed By: Saif Ullah Dar
50

51. Company on the Cutting
Edge
Yahoo!

Co-founded by Jerry Yang and David Filo
in 1994
Started as a series
of lists
to organize
favorite Web sites
 Today more than
166 million visitors
Click to view Web Link
then click Yahoo!
access 189 million
Next
pages daily
p. 2.17
11/27/13
Developed By: Saif Ullah Dar

51

52. The World Wide Web
What is a personal Web page?


A Web page
maintained by a
private
individual who
normally is not
associated with
any organization
Reasons: job
hunting and
sharing life
experience with
the world
Next
p. 2.17 Fig. 2-14f
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Developed By: Saif Ullah Dar
52

53. The World Wide Web
What is multimedia?
Any application that integrates text with
other media elements
 Often used for Web pages to add appeal
 Multimedia Web pages often require more
time to download because they contain
large graphics and video or audio clips

audio
graphics
Next
p. 2.18
11/27/13
animation
virtual
reality
Developed By: Saif Ullah Dar
video
53

54. The World Wide Web
What is a graphic?



Also called a
graphical image
A digital
representation of
information such
as a drawing,
chart, or
photograph
First media used
to enhance textbased Internet
Next
p. 2.18 Fig. 2-15
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54

55. The World Wide Web
What are the formats for graphics files on
the Web?
Next
p. 2.18 Fig. 2-16
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55

56. The World Wide Web
Which two formats are most popular for the Web?
JPEG (Joint
Photographic Experts
Group)
GIF (Graphics
Interchange Format)
Also uses compression
techniques to reduce file
size
 Works best for images
with only a few distinct
colors, such as line
drawings, single-color
borders, and simple
cartoons

Graphical image that uses
compression techniques
to reduce the file size
 Smaller sizes result in
faster downloading of
Web page
 The more compressed the
file, the smaller the file,
but the lower the quality
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
Next
p. 2.19
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56

57. The World Wide Web
What is a thumbnail?



A small version of
a larger graphical
image
Used because
graphics files can
be time consuming
to display
Usually click
thumbnail to
display the fullsized image
Next
p. 2.19 Fig. 2-17
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57

58. The World Wide Web
What is animation?



Next
p. 2.19
The appearance of motion
created by displaying a
series of still images in
rapid sequence
Adds visual interest or
draws attention to
important information or
links
Animated GIF uses
computer animation and
graphics software to
combine several images
into a single GIF file
11/27/13
Developed By: Saif Ullah Dar
58

59. The World Wide Web
What is a marquee?
Text that animates by
scrolling across the
screen
 Pronounced mar-KEE

tion
animation * with animation** ** *interest with
with animation * interest animation*** *interest
rest withwithadd*** **
interest**animation* with with*animationadd *add
add interest**animation* *add*interest animation
* * ****add*interest*add*interest*with*with*anim*
add add ** inte
*
Next
p. 2.19
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59

60. The World Wide Web
What is audio?
Music, speech, or
any other sound
 Individual sound
files that you
download to your
computer

music
speech
other
sound
Next
p. 2.20
11/27/13
Click icon to hear audio clip.
Press the Esc key to cancel.
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60

61. The World Wide Web
What is MP3?



Next
p. 2.20
A popular technology
that compresses
audio
Reduces an audio file
to about one-tenth of
its original size while
preserving the
original quality of the
sound
MP3 file are easily
copied  Controversy with respect to copyright
from the Web
infringement
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Developed By: Saif Ullah Dar
61

62. The World Wide Web
How can you play MP3 files?
Most current
operating systems
contain a program
called a player
• plays audio in MP3
files on your
computer
 Portable audio
devices called MP3
players
Click to view • play MP3 files
Web Link
stored on CD or
then click MP3
Next
miniature storage
p. 2.20 Fig. 2-18
media11/27/13
plays music
stored on CD

plays music
stored on
Developed By: Saif Ullah Dar
clik! disk
62

63. The World Wide Web
What is streaming audio?
Also called streaming
sound
 Enables you to listen to
the sound as it
downloads
 Many radio and television
stations use streaming
audio to broadcast
 Two accepted standards
• Windows Media Player
Click to view
• RealAudio – a
Web Link
then click
component of
Streaming Media
RealPlayer
Next

p. 2.21 Fig. 2-19
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63

64. The World Wide Web
What is video?
video
Consists of fullmotion images
that are played
back at various
speeds
 Most video also
has
accompanying
audio

Next
p. 2.22 Fig. 2-20
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64

65. The World Wide Web
What video formats are used on the Web?
MPEG standard
(Moving Pictures
Experts Group)
 Individual video files
that you must
download completely
before you can play
them on the computer
component of
RealPlayer
• Windows Media
Player
Next
p. 2.22
Streaming video
 Allows you to
view longer or live
video images as
they download to
your computer
 Two widely used
standards
• RealVideo – a
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65

66. The World Wide Web
What is a Web cam?
Also called a
cam
 A video camera
whose output
displays on a
Web page
 Shows images
that change
regularly

Next
p. 2.22
Web cam
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66

67. The World Wide Web
What is virtual reality (VR)?



The use of computers to simulate a real or imaged
environment that appears as a three-dimensional (3D)
space
VR world –
a 3-D site that
contains
infinite space
and depth
Used for games
as well as
many practical
applications
Next
p. 2.22 Fig. 2-21
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67

68. The World Wide Web
What is pull and push technology?
Pull
 Obtaining information by
requesting it from a site
 Relies on a client to
request a Web page from
a server
Push
 Server automatically
downloads content to
your computer at regular
intervals
ticker tape
pushed to
desktop from
Microsoft
Investor Web
site
Next
p. 2.23 Fig. 2-22
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68

69. The World Wide Web
What is Webcasting?



Another name for push technology
Delivers information at regular intervals without you
having to request it
Information can be viewed whether you are online or
offline
ticker tape
pushed to
desktop from
Microsoft
Investor Web
site
Next
p. 2.23
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69

70. Electronic Commerce
What is electronic commerce?

Also known as e-commerce

A financial
business
transaction
that occurs
over an
electronic
network
such as the
Internet
Next
p. 2.24 Fig. 2-23
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70

71. Electronic Commerce
What are the three types of e-commerce?
Business to consumer
(B-to-C or b2C)
Sale of goods to the general public
Consumer to consumer
(C-to-C or C2C)
One consumer sells directly to another
Business to business
(B-to-B or B2B)
Next
p. 2.25
Businesses providing goods and services to
11/27/13
Developed By: Saif Ullah
other businessesDar
71

72. Electronic Commerce
What are some features of e-commerce?

Electronic storefront
• The place where a customer
visits an online business

Shopping cart
• Allows the customer to
collect purchases
Online auction
• Site where you can bid on an
Click to view

Web Link
then click
E-Commerce
item being sold by someone
else
Next
p. 2.25
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Developed By: Saif Ullah Dar
72

73. Technology Trailblazer
Masayoshi Son
Helped to bring Japan to the forefront of the
digital age
 Founded Softbank Corporation in 1981


By 1995, Softbank
controlled one-half of the
personal computer
software in Japan

Click to view Web Link
then click Masayoshi Son
Next
p. 2.25
A leading member
of Japan’s Prime
Minister’s IT
Strategy Council By: Saif Ullah Dar
11/27/13
Developed
73

74. Web Publishing
Step 1
Step 2
What is Web Publishing?

The development and
maintenance of Web
pages
1 Plan: Think about issues that
could affect the design of the
2 Analyze and Design: Sketch a
Web site.
design of the Web page on
3 paper. Create the Web site in
Create:
a software package such as
4 Deploy: Copy (upload) the
word processing.
Web site from your hard disk
5 Maintain: server. revise your
to a Web Visit and
Web site regularly to be sure
it is working and current.
Step 4
Step 3
Step 5
Next
p. 2.26 Fig. 2-24
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74

75. Web Publishing
What is needed for creating a Web page?

Also called Web page authoring
Hardware
• Digital camera
• Scanner
•
Sound card
• Microphone
• PC camera
Software to prepare HTML
• HTML (hypertext markup
language)
• A set of special codes that
format a file for use as a Web
page
• Created with either:
• Word processing package
Next
p. 2.26
11/27/13
• Web page authoring
Developed By: Saif Ullah Dar
software
75

76. Web Publishing
What is a plug-in?
An additional program that extends the
capability of a browser
 Many plug-ins can be downloaded at no cost
Click to view
Web Link
from the Web
then click

Plug-ins
Next
p. 2.28 Fig. 2-25
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Developed By: Saif Ullah Dar
76

77. Web Publishing
How do you deploy a Web site?
Locate a Web
server to store your
site
• Provided by many
Click to view Web Link
then click Web Publishing
ISPs and OSPs at no
additional cost
• Provided by a Web
hosting service for a
monthly fee
Upload, or copy,
the site to the
Web server
Next
p. 2.29
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Developed By: Saif Ullah Dar
77

78. Web Publishing
What else might be needed to create a Web site?
Apply to an
official registrar
for a specific
domain name
Click to view Web Link
then click Submission Services
Next
p. 2.29
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Register site with
search engines
using a
submission
service
• A Web-based
business that
helps register
your site
Webmaster
Individual
responsible for
maintaining a Web
site and developing
Developed By: Saif Ullah Dar
78
Web pages

79. Other Internet Services
What is e-mail?



Electronic mail
The transmission of messages and files via a
computer network
Use an e-mail program to work with messages
create
Click to view
Web Link
then click E-mail
Next
p. 2.31
send
forward
store
print
receive
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delete
Developed By: Saif Ullah Dar
79

80. Other Internet Services
Step 1
How do you
send an e-mail
message?
Step 2
1 Start an e-mail program and
2 point thethe New Mail
Click to New Mail
Message button to display
3 Message button
Enter the recipient’s e-mail
4 Click the Insert File button Step 4
the Message subject, and
address, the window
to attach a JPG file
5 the message pictureMessage
When Sallya in the to the
containing receives the ewindow
mail message, she openson
message. Locate the file
the JPG file to view click its
your hard disk and the
picture. icon for the file
name. An
displays. Click the Send
button to send the
message.
Next
p. 2.30 Fig. 2-26
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Step 3
Developed5 Saif Ullah Dar
Step By:
80

81. Other Internet Services
What is an Internet e-mail address?

A combination of a user name and a domain name
that identifies a user so he or she can receive
Internet e-mail
user name or user-ID
A unique combination of
characters that identifies you
at
domain name
Identifies the mail server
Next
p. 2.31 Fig. 2-27
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81

82. Other Internet Services
How can you get e-mail?


Most ISPs and OSPs provide an Internet e-mail
program and a mailbox on a mail server as a
standard part of their Internet access services
Some Web sites provide e-mail services free of
charge
address book
mail server
Allows you to store a list of
names and e-mail addresses
The server that contains the
mailboxes
mailbox
Next
p. 2.33
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Storage location usually
residing on the computer
that connects you to the
Developed By: Saif Ullah Dar
Internet
82

83. Other Internet Services
What is a POP server?




Post office protocol server
When a message arrives
at the recipient’s mail
server, the message
transfers to a POP or
POP3 server
POP server holds an
e-mail message until the
recipient retrieves it with
his or her e-mail software
POP3 is the newest
version
Next
p. 2.32
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Developed By: Saif Ullah Dar
83

84. Other Internet Services
How does an
e-mail
message
travel?
1 Using e-mail software,
you create and send a
2 Your software contacts
message.
3 software on your service
Software on the mail
provider’s mail server.
4 server determines the
The mail server transfers
5 When the recipient uses
best route forto a POP3
the message the data
e-mail software to check
and sends the message,
server.
for e-mail messages, the
which travels along
message transfers the
Internet routers to from
the POP3 serverserver.
recipient’s mail to the
recipient’s computer.
Next
p. 2.32 Fig. 2-28
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Step 1
Step 2
Step 5
mail
server
Step 4
Internet
routers
mail
Step 3Developed By: Saif Ullah Dar server
POP
server
84

85. Other Internet Services
What is FTP?

File Transfer Protocol

An Internet
standard that
allows you to
upload and
download
files with
other
computers on
the Internet
file
download
window
Next
p. 2.33 Fig. 2-29
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Developed By: Saif Ullah Dar
85

86. Other Internet Services
What are some FTP terms?
FTP server
A computer that
allows users to
upload and
download files
using FTP
FTP site
A collection of
files that reside on
an FTP server
Next
p. 2.33
11/27/13
Developed By: Saif Ullah Dar
anonymous
FTP
Anyone can
transfer some, if
not all, available
files
86

87. Other Internet Services
What is a newsgroup?
An online area in which users conduct written
discussions about a particular subject
 A user sends a message to the newsgroup
 Other users in the newsgroup read and reply
to the message

Usenet
The entire collection of
Internet newsgroups
Next
p. 2.33
11/27/13
news server
A computer that stores
and distributes
newsgroup messages
Developed By: Saif Ullah Dar
87

88. Other Internet Services
What is a newsreader?

A program that enables you to access a
newsgroup
article
A previously entered message
post
Add an article to a news group
thread
Also called threaded discussion
Next
p. 2.33
11/27/13
The original article and all
subsequent related replies
Developed By: Saif Ullah Dar
88

89. Other Internet Services
What is a message board?
A type of discussion group that does not require
a newsreader
 Also called a
discussion board

Click to view
Web Link
then click
Newsgroups and
Message Boards
Next
p. 2.34 Fig. 2-30
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Developed By: Saif Ullah Dar
89

90. Other Internet Services
What is a
mailing list?
A group of e-mail
names and
addresses given
to a single name
 When a message
is sent to a
mailing list, every
person on the list
receives a copy of
the message
 Subscribe or unsubscribe to mailing list to add or
remove your name from the mailing list
Next
p. 2.34 Fig. 2-31
11/27/13
90
 Some are known as Developed By: Saif Ullah Dar
LISTSERVs


91. Other Internet Services
What is a chat?



A real-time typed
conversation that
takes place on a
computer
Real-time means that
you and the people
with whom you are
conversing are online
at the same time
A chat room is a
location on an
Internet server that
permits users to chat
Click to view Web Link
then click Chat Rooms
Next
p. 2.35 Fig. 2-32

A chat client is
a program on
your computer
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that allows
you to chat
Developed By: Saif Ullah Dar
91

92. Technology Trailblazer
Lavonne Luquis




Journalist
Started LatinoLink,
the first general
interest Web
magazine for Latinos
Now known as
Latino.com
More that 280,000
visitors each month
Click to view Web Link
then click Lavonne Luquis
Next
p. 2.35
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Developed By: Saif Ullah Dar
92

93. Other Internet Services
What is instant messaging (IM)?

A real-time Internet
communications
service
• Notifies you when
one or more people
are online
• Allows you to
exchange messages
or files or join a
private chat with
them
Click to view Web Link
then click Instant Messaging
Next
p. 2.36 Fig. 2-33
Karen’s message
immediately displays on
Katy’s computer screen
because she is online
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Katy’s response to Karen
message sent from Karen to Katy
Developed By: Saif Ullah Dar
93

94. Other Internet Services
What is
netiquette?
Internet
etiquette
 Code of
acceptable
behaviors
users should
follow while
on the Internet

Click to view video
Next
p. 2.37 Fig. 2-34
11/27/13
Netiquette
Golden Rule:
Treat others as
you would like
them to treat you.
•2.Read the newsgroups, and chat
1.In e-mail, FAQ or posting
Avoid sending spam, or an
Use abbreviationsexpress
emoticons (frequently
to for phrases
unsolicited message sent or
rooms:
flames,questions)
such as
emotionwhich are abusive to many
asked
recipients at once. Considered
insulting messages
•3.Use yourby thename for your
Keep Smile
BTW
: ) messages way
user brief
Internet junk mail.
• Do not participate in flame wars,
personal use only
• Use proper spelling and grammar
:(
FYI Frown your information
for
which are exchanges of flames
4.Do not assume material is
• Be l Indifference it’s worth
FWIW for what
: polite
accurate or up to date
• Avoid offensivehumble opinion
IMHO in my language
: Undecided
5.Never read someone’s private
• Do not use all capital letters which is
e-mail ta ta for now
TTFN
:o Surprised
the equivalent of SHOUTING!
TYVM thank you very much
• Clearly identify a spoiler: a message
that reveals a solution to a game or
Developed By: movie
94
ending to aSaif Ullah Dar or program

95. Summary of the Internet
and World Wide Web
The Internet
 History of the Internet
 How the Internet works
 The World Wide Web
 Electronic commerce
 Web publishing
 Other Internet services
 Netiquette

Next
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95

96. Chapter 2 Complete
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96