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Chapter 18
Technology in
the Workplace

Section 18.2
Internet Basics
Read to Learn
  Describe the Internet and its components.

  Identify tools for managing threats when using
  the Internet.
The Main Idea
The Internet has changed the way business is
done. However, it poses risks to the information
that is stored on computers. Companies and
people must protect their computers from threats.
Key Concepts
  The Internet

  Managing Technology Threats
Key Terms



Internet    a global computer network
Key Terms

           a system for accessing, changing,
           and downloading a large set of
World Wide
           hypertext-linked documents and other
Web
           files located on computers connected
           through the Internet
Key Terms

Web       a program used for displaying and
browser   viewing pages on the Web


search    a computer program that can produce a
engine    list of documents related to a given topic
Key Terms

            a computer network used by an
intranet
            organization


            an extension of the intranet of a
extranet
            company or organization
Key Terms
          a person who illegally gains access to
hacker    and sometimes tampers with information
          in a computer system

          bits of information about a computer
cookies   users that are stored on that computer’s
          hard drive
Key Terms



        a program that can insert copies of itself
virus   into a computer without the user’s
        knowledge, often damaging stored data
The Internet

People access the
                           Internet
Internet through their     a global computer network
telephone lines, digital
subscriber lines (DSL),
or over cable or
ethernet connections.
The Internet

Modems are devices used to send data from
one computer to another.
The World Wide Web

The World Wide Web
                        World Wide Web
is also known as “the   a system for accessing,
Web.”                   changing, and
                        downloading a large set of
                        hypertext-linked
                        documents and other files
                        located on computers
                        connected through the
                        Internet
The World Wide Web

The World Wide Web Consortium (W3C) is
an international association in which member
organizations, a full-time staff, and the public
work together to develop Web standards.
The World Wide Web

To access the
                         Web browser
information on the       a program used for
Internet, a person can   displaying and viewing
                         pages on the Web
use a Web browser
                         search engine
and a search engine.     a computer program that
                         can produce a list of
                         documents related to a
                         given topic
The World Wide Web

Web browsers include design, graphics, and
sounds, which make it more enjoyable to surf,
or search for information.
The World Wide Web

Users find information they need by typing a
keyword in to the search engine.
The World Wide Web

Web browsers include Mozilla Firefox®,
Netscape®, and Microsoft Internet Explorer®.

Search engines include Yahoo!® , MSN®,
and Lycos®.
Intranets and Extranets

An intranet works like
                          intranet
the Internet, but its     a computer network used
access is restricted to   by an organization
authorized users.
Intranets and Extranets

An extranet is a
                          extranet
semi-private network      an extension of the
that allows more          intranet of a company or
than one company          organization

access to the same
information.
                      Collaboration Software

Many businesspeople find they can communicate
better with their customers and employees using
collaboration software. WebEx™, Microsoft’s Live
Meeting®, and IBM Lotus Sametime® are some
types of this software.
Managing Technology Threats
A hacker is an
example of the many    hacker
                       a person who illegally
privacy and security
                       gains access to and
risks and threats to   sometimes tampers with
users of computer      information in a computer
                       system
technology.
Managing Technology Threats
To avoid privacy and security threats, do not
click on pop-up ads unless you know and
trust the company.
Privacy Issues
Companies use
software tools to      cookies
                       bits of information about a
track computer users
                       computer user that are
online.                stored on that computer’s
                       hard drive
Some people see
cookies as an
invasion of privacy.
Privacy Issues
Users who visit online stores can have their
personal information stored on the company’s
server even if they do not buy anything.
Privacy Issues
Those who do not want companies to store
and use their personal information must reject
or delete cookies.
Privacy Issues
A worm is a special
computer virus that      virus
                         a program that can insert
invades a computer
                         copies of itself into a
network and multiplies   computer without the
itself as it spreads     user’s knowledge, often
                         damaging stored data
throughout the
network.
Privacy Issues
Security programs such as anti-virus software
protect against different types of viruses.

Anti-virus software must be updated regularly
because new viruses are created every day.
Privacy Issues
Spyware is software that tracks what a user
does on the Internet.

Some software packages can protect users
from spyware.
Privacy Issues
A firewall is computer software that prevents
unauthorized access to a system software or
data on a user’s computer.

A firewall can reduce spam.
Privacy Issues
A security breach occurs when someone
manages to obtain unauthorized access to
your system.
1. How would you describe the Internet and the
   World Wide Web?

The Internet is a global computer network of
interconnected documents and files. The World
Wide Web is a system for accessing, changing,
and downloading a large set of hypertext-linked
documents and other files located on
computers connected through the Internet.
2. How does a search engine work?

It looks through countless Web pages and
creates a content index for each.
3. How can a computer user protect against
   spam, viruses, worms, and spyware?

install firewall software, anti-virus, and
spyware-protection software
End of
Chapter 18
Technology in
the Workplace

Section 18.2
Internet Basics

				
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