POWER PRACTICE
Chapter 7
The Internet and the World
Wide Web
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Question 7.1
What is necessary to communicate
between your home computer and a
network?
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Answer!
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Q7.1 Answer
What is necessary to communicate
between your home computer and a
network?
In addition to your computer, you need a
modem, a phone line, and
telecommunications software. If you are
connecting to your school network
through the Internet, you also need an
ISP to allow you access to the Net.
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Question 7.2
Why is it necessary to be concerned
about bandwidth?
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Q7.2 Answer
Why is it necessary to be concerned
about bandwidth?
Bandwidth is the capacity of the
communications channel you are using.
The higher the capacity (broader the
bandwidth), the faster the data can
flow. When you have low bandwidth,
transmissions slow down, wait time
increases, and large files take extended
time to transmit.
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Question 7.3
What is the Internet and who owns it?
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Q7.3 Answer
What is the Internet and who owns it?
The Internet is an international
collection of interconnected, individually
owned networks. No one owns the
Internet since its parts are owned by
many different groups. Instead a
consortium made up of these different
groups called the Internet Society jointly
decides on the issues relating to it such
as common protocols and standards.
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Question 7.4
When selecting an ISP, what should
you look for?
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Q7.4 Answer
When selecting an ISP, what should
you look for?
All ISPs provide access and email for a
fee. Fees differ and so do the services
that an ISP offers. Important services
to look for include technical support,
easy-to-use communications program,
friendly website, personal web space,
conferences, chats and instant
messaging, and newsreaders.
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Question 7.5
What is email and how does it work?
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Q7.5 Answer
What is email and how does it work?
Email is an asynchronous tool that works
much like a virtual post office. With
email you can send and receive electronic
mail. When you receive mail, it is stored
in your email box until you have time to
access and read it. After reading, just
like real mail, you can discard it or save
it. When you send mail, it waits in the
recipient’s email box for them to pick it
up.
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Question 7.6
How can an electronic discussion be
useful in teaching?
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Q7.6 Answer
How can an electronic discussion be
useful in teaching?
Electronic discussions are asynchronous
virtual discussions in which participants
read and post views. In teaching,
discussions let everyone, even shy
students, participate. Each student can
read their peers’ comments at their own
pace and then respond in a thoughtful
way without the inherent pressures of
the classroom.
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Question 7.7
What advantage does a mailing list
have for a busy teacher?
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Q7.7 Answer
What advantage does a mailing list
have for a busy teacher?
Mailing lists or listservs let you
participate in teacher news and
discussions by having comments mailed
directly to your email box. If you want
to reply to the discussion, your comments
in turn are mailed to all the other
subscribers.
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Question 7.8
What is the difference between a chat
room and an instant message?
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Answer!
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Q7.8 Answer
What is the difference between a chat
room and an instant message?
A chat room is a virtual space in which
multiple participants can join to share a
discussion by typing in text. Chat rooms
can be public (anyone can join) or private
(you must be invited in). Instant
message is like a chat in that it is like a
mini-chat space opened up by one person
to communicate with one other who
happens to be online at the same time.
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Question 7.9
How might a newsgroup be used in the
classroom?
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Q7.9 Answer
How might a newsgroup be used in the
classroom?
The Usenet is a collection of thousands
of public conferences dedicated to a
single topic. Each individual conference
is called a newsgroup. Many newsgroups
are dedicated to content area and
educational topics. Monitoring and
participating in these newsgroups can add
a unique and expanded dimension to
classroom discussion.
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Question 7.10
What is a web site?
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Q7.10 Answer
What is a web site?
A web site is a collection of related
web pages that are linked together and
accessed via navigation buttons. Web
pages are written in HTML and are
displayed via a browser.
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Question 7.11
What are the components of a URL?
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Q7.11 Answer
What are the components of a URL?
A Uniform Resource Locator (URL)
includes the prefix http:// which stands
for hypertext transfer protocol, followed
by the domain name of the website,
which may be followed by the name of
the folder in which a target document is
located, and ending with the name of the
target document.
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Question 7.12
What is a plug-in and why is it
necessary?
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Q7.12 Answer
What is a plug-in and why is it
necessary?
A plug-in is an additional program that
expands a browser’s capabilities. They
typically add the ability to play back
multimedia.
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Question 7.13
What is the difference between jpeg
and gif graphics?
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Q7.13 Answer
What is the difference between jpeg
and gif graphics?
Gif files are used for color images, clip
art, and line art. It can also include
multiple images for movies. Jpeg is
typically the format used for
photographic images.
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Question 7.14
How does a search engine find
information on the Web?
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Q7.14 Answer
How does a search engine find
information on the Web?
A search engine is a program designed to
find websites by checking keywords that
a user types in against a database of
URLs and their descriptions. When
keywords match a descriptor, the URL is
displayed as a hit. URLs and keywords
are gathered from people registering
their websites or from spiders.
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Question 7.15
How does a portal differ from an ISP?
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Q7.15 Answer
How does a portal differ from an ISP?
A portal, like an ISP, offers services
such as email, a search engine, and chat
rooms. However, an ISP also provides
the temporary connection to the
Internet. To use a portal, you must
already be online. Portals are often
dedicated to a single area of interest,
such as education portals.
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