The document discusses various uses and applications of the internet, including communicating, shopping, searching, entertainment, and education. It describes common internet activities like email, instant messaging, online shopping, accessing online libraries for information, and taking online courses. It also outlines different types of internet connections and speeds like dial-up, DSL, cable, wireless, and satellite. Finally, it discusses different types of websites like news sites, information sites, business/marketing sites, blogs, and personal websites.

2. • Also called net
• is a worldwide collection of networks that links millions of
businesses, government agencies, educational
institutions, and individuals

4. •COMMUNICATING
• SHOPPING
• SEARCHING
• ENTERTAINMENT
• EDUCATION OR LEARNING

5. • COMMUNICATING
 the most popular internet activity
 You can exchange email with your family and friends
The three most popular types of Internet communication
are e-mail, instant messaging, and discussion
groups.

6. • SHOPPING
one of the fastest growing Internet applications
You can purchase goods using checks, credit cards, or
electronic cash.

7. • SEARCHING
 You can access some of the world’s largest libraries
directly from your home computer
You also will find the latest local, national, and
international news

8. • ENTERTAINMENT
 You can find music, movies, magazines, and computer
games
You will find live concerts, movie previews, book clubs,
and interactive live games.

9. • Education or E-learning
You can take classes on almost any subject
There are courses for high school, college, and graduate
school credit.

10. • Electronic Communications
 permit the users to communicate with other people on
the Internet via electronic Mail, bulleting boards, chat
rooms, social networking, and news groups.
 EMAIL
INSTANT MESSAGING
REAL TIME CHAT
SOCIAL NETWORKING

11. • Information Services
are commonly referred to as remote login,
or information access
 permit users to log in to other computers
from their computers for the purpose of
obtaining information
TELNET

12. • Information Retrieval
These services permit users to obtain files
from other sites and bring them to their
computers.
 This is commonly referred to as file
transfer.
FILE TRANSFERPROTOCOL

13. • Data transmitted in characters or collections of bits.
• A bit the smallest unit of information used by computers
Today’s data transmission speeds are measured in
bits, kilobits, megabits, and gigabits per second:
 Bps (bits per second) A computer with an older
modem might have a speed of 28,800 bps, which is
considered the minimum speed for visiting websites with
graphics.
 Kbps (kilobits per second or 1 thousand bits per
second) This is the most frequently used measure. The
speed of a modem that is 28,800 bps might be expressed as
28.8 Kbps.

14.  Mbps (megabits per second or 1 million bits per
second) Faster means of connection.
 Gbps (gigabits per second or 1 billion bits per
second)
• Upload – is the transmission of data from a local
computer to a remote computer, as from your PC to a
website you are constructing
• Download – is the transmission of data from a remote
computer to a local computer, as from a website to your
own PC.

15. • Narrowband – Dial-up
Modem
 Dial-up Access takes place when the modem
in your computer uses a standard telephone line
to connect to the Internet.
 This type of access is an easy and inexpensive
way for users to connect to the Internet.
 A dial-up connection, however, is slow-speed
technology.

16. High Speed Phone Lines
ISDN Line (Integrated Services Digital Network)
 consist of a hardware and software that allow voice,
video, and data to be communicated over traditional
copper-wire telephone lines.
 Capable of transmitting 64 to 128 Kbps, ISDN is able to
send digital signals over POTS “plain old telephone
system” lines

17. TI Line
• essentially a traditional trunk line that carries 24 normal
telephone circuits and has a transmission rate of 1.5
Mbps.
• Another high-speed line, the T3 line, transmits at 44.7
Mbps (the equivalent of 672 simultaneous voice calls).
• An STS-1 connection runs at 51 Mbps, and an STS-48
connection speeds data along at 2.5 Gbps (2.5 billion bits
per second).
• T1 and T3 lines are commonly used by business
connecting to the Internet by Internet access providers,
and in the Internet high-speed transmission lines.

18. DSL Line (Digital Subscribe Line)
• uses regular phone lines, a DSL modem, and special
technology to transmit data in megabits per second.
• Incoming data is significantly faster than outgoing data.
• That is, your computer can receive data at the rate of 1.5-
9 Mbps, but it can send data at only 128 Kbps-1.5 Mbps.

19. Cable Modem
• A cable modem connects a personal computer to a
cable-TV system that offers an Internet connection.
• The common residential transmission rate is 3 Mbps.
• The advantage of a cable modem is that, a DSL
connection, it is always on

20. • Wireless Connection
• Communications Satellites
• a space station that transmits radio waves called
microwaves from earth-based stations.
• Transmitting a signal from a ground station to a satellite
is called uplinking; the reverse is called downlinking.
• With a pizza-size satellite dish on your roof, you can send
data at the rate of 56-500 Kbps and receive data at about
1.5 Mbps from a communications satellite.

21. • Wireless Fidelity (Wi-Fi ) - is the name given to any of
several standards – so called 802.11 standards-set by
the Institute of Electrical and Electronic Engineers (IEEE)
for wireless transmission One standard, 802.11b,
permits wireless transmission f data at 1.11 Mbps up to
300 feet from an access point, or hot spot, a station that
sends and receives data to and from a Wi-Fi network.
• 3G (Third Generation) - Wireless 3G is loosely defined
as high-speed wireless technology that does not need
access points because it uses the existing cellphone
system.

22. • 3G (Third Generation) - Wireless 3G is loosely defined
as high-speed wireless technology that does not need
access points because it uses the existing cellphone
system.

23. • Portal – is a Web site that offers a variety of Internet
services from a single, convenient location.
• Wireless portal is a portal designed for Internet-enabled
mobile devices

24. • News
 A news Web site contains newsworthy material
including stories and articles relating to current events,
life, money, sports, and the weather.
Many magazines and newspapers sponsor Web sites
that provide summaries of printed articles, as well as
articles not included in the printed versions. Newspapers
and television and radio stations are some of the media
that maintain news Web sites.

25. • Information
An information Web site contains factual information.
 Government agencies have informational Web sites
providing information such as census data, tax codes,
and the congressional budget.
Other organizations provide information such as public
transportation schedules and published research findings

26. • Business/Marketing
 this site contains content that promotes or sells products
or services. Nearly every business has a
business/marketing Web site.
 Many of these companies also allow you to purchase
their products or services online.

27. • Educational
 An educational Web site offers exciting, challenging
avenues for formal and informal teaching and earning.
 For a more structured learning experience, companies
provide online training to employees and colleges offer
online classes and degrees.
 Instructors often use the Web to enhance classroom
teaching by publishing course materials, grades, and
other pertinent class information.

28. • Entertainment
 this site offers an interactive and engaging environment.
Popular entertainment Web sites offer music, videos,
sports, games, ongoing Web episodes, sweepstakes,
chats, and more. Sophisticated entertainment Web sites
often partner with other technologies.
 For example, you can cast your vote about a topic on a
television show.

29. • Advocacy
 An advocacy Web site contains content that describes a
cause, opinion, or idea.
The purpose of an advocacy Web site is to convince the
reader of the validity of the cause, opinion, or idea.
These Web sites usually present views of a particular
group or association.

30. • Blog
 A blog, short for Web log, is a Web site that uses
regularly updated journal format to reflect the interests,
opinions, and personalities of the author and sometimes
site visitors.
 Blogs have an informal style that consists of a single
individual’s ideas (similar to a diary) or a collection of
ideas and thoughts among visitors.

31. • Personal
 A private individual or family not usually associated with
any organization may maintain a personal Web site of
just a single Web page.
People publish personal Web pages for a variety of
reasons. Some are job hunting.
 Other simply want to share life experiences with the
world

32. 1. Search Engines – are specialized programs that assist
you in locating information on the Web and the Internet. This
search engine, like most others, provides two different search
approaches.
• a. Keyword search: In a keyword search, you enter a
keyword or phrase reflecting the information you want. The
search engine compares your entry against its database and
returns a list of hits, sites that contain the keywords. Each hit
includes hyperlink to the referenced Web page (or other
resource) along with a brief discussion of the information
contained at the location.
• b. Directory search: Most search engines also provide a
directory or list of categories or topics such as Arts &
Humanities, Business & Economics, Computers & Internet. In
a directory search, also known as an index search, you select
a category that fits the information that you want. Another list
of subtopics related to the topic you selected appears. You
continue to narrow your search in this manner until a list of
Web sites appears.

33. 2. Metasearch Engines – are programs that
automatically submit your search request to several search
engines simultaneously. The metasearch engine receives
the results, eliminates duplicates, orders the hits, and then
provides the edited list to you.

34. 3. Specialized Search Engines – focus on subject-specific
Web sites. Specialized sites can potentially save
your time by narrowing your search. For example, you are
researching a paper about the fashion industry. You could
begin with a general search engine like Yahoo! or you
could go to a search engine that specializes specifically in
fashion.

35. • E-commerce, short for electronic commerce, is a
business transaction that occurs over an electronic
network such as the Internet.
• Anyone with access to a computer, an Internet
connection, and a means to pay for a purchased goods
or services can participate in e-commerce.
• Popular uses of e-commerce by consumers include
shopping, investing, and banking.
• Users can purchase just about any product or service on
the Web.

36. • Business-to-consumer (B2C) e-commerce -
consists of the sale of goods and services to the general
public. A customer (consumer) visits an online business
through an electronic storefront, which contains product
descriptions, graphics, and a shopping cart. The
shopping cart allows the customer to collect purchases.
When ready to complete the sale, the customer enters
personal data and the method of payment, preferably
through a secure Internet connection

37. • Consumer-to-Consumer (C2C) e-commerce –
occurs when one consumer sells directly to another, such
as in an online auction, eBay is one of the more popular
online auction Web sites.

38. • Business-to-business (B2B) e-commerce –
Businesses often provide goods and services to other
businesses, such as online advertising, recruiting, credit,
sales, market research, technical support, and training.

39.  Commercial .com  Networking .net  Nonprofit .org
 Educational .edu  Other businesses or firms .firm  Org. emphasizing Web activities .web
 Governmen
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.gov  Information services .info  International .int
 Military .mil  Individuals or families .no  Recreation/entertainment
sources
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