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Chapter 2

Multiple Choice
Identify the letter of the choice that best completes the statement or answers the question.
 

 1. 
A basic communications system consists of __________.
a.
two computers, one to send and one to receive data
b.
communications devices that send and receive data
c.
a communications channel over which data is sent
d.
all of the above
 

 2. 
__________ signals are individual electrical pulses that a computer uses to represent data.
a.
Analog
c.
Digital
b.
Bi-directional
d.
Modem
 

 3. 
Networked computers contain a(n) __________ to connect directly to a network.
a.
modem
c.
network interface card
b.
conversion card
d.
analog/digital interface card
 

 4. 
A __________ LAN is a LAN that uses media such as radio waves rather than wires.
a.
wireless
c.
wired
b.
wirefree
d.
wire
 

 5. 
A(n) __________ covers a large geographical region.
a.
local area network
c.
analog network
b.
wide area network
d.
all of the above
 

 6. 
The world's largest network is called the __________.
a.
LAN
c.
Internet
b.
WAN
d.
World Wide Web
 

 7. 
__________ is a technique of breaking a message into individual packets.
a.
Packet changing
c.
Message switching
b.
TCP/IP
d.
Packet switching
 

 8. 
Most Web pages contain __________, which are built-in connections to other related Web pages.
a.
hyperlinks or links
c.
hyperbonds or bonds
b.
hypertext or text
d.
hyperties or ties
 

 9. 
A collection of related Web pages that can be accessed electronically is called a __________.
a.
Web site
c.
Web server
b.
home page
d.
Web browser
 

 10. 
A __________, which is similar to a book cover or table of contents, provides information about the purpose and content of a collection of Web pages.
a.
Web site
c.
Web server
b.
home page
d.
Web browser
 

 11. 
Combining text, audio, video, animation, and sound brings a Web page to life and __________.
a.
increases the types of information available on the Web
b.
expands the Web’s potential uses
c.
makes the Internet a more entertaining place to explore
d.
all of the above
 

 12. 
Simple __________ applications consist of individual files, such as movie or television clips, that must be downloaded completely before they can be played on a computer.
a.
Web graphics
c.
Web text
b.
Web audio
d.
Web video
 

 13. 
Virtual Reality is used for all of the following practical applications except __________.
a.
transmitting messages, graphics, and other attachments via a computer network
b.
creating models of molecules, organisms, and other structures for students to examine
c.
showcasing company products or creating advertisements
d.
creating architectural models to show clients how a completed project will look
 

 14. 
Adding an article to a newsgroup is done through a process called __________.
a.
streaming
c.
switching
b.
posting
d.
publishing
 

 15. 
If the discussion in a particular newsgroup is appealing, a user can __________ to it, which means its location is saved in a newsreader so it can be accessed easily in the future.
a.
post
c.
subscribe
b.
upload
d.
download
 

 16. 
__________ is a popular software program used to manage many educational mailing lists.
a.
BOOKMARK
c.
FAVORITES
b.
LISTSERV
d.
NEWSGROUP
 

 17. 
Internet __________ allows parents, teachers, and others to block access to certain materials on the Internet.
a.
e-mail software
c.
telephone software
b.
filtering software
d.
authoring software
 

 18. 
:) (smile), :( (frown), :| (indifference), :\ (undecided), and :o (surprise) are popular __________ used to express feeling in an e-mail message.
a.
embellishments
c.
emoticons
b.
embodiments
d.
emollients
 

 19. 
Netiquette recommends that Internet users avoid sending spam, which is a(n) __________.
a.
abusive or insulting message
b.
unsolicited e-mail message or newsgroup posting sent to many recipients
c.
frequently asked question
d.
message that reveals the solution to a game or ending to a movie
 

 20. 
In the near future __________ will be commonplace in K-12 education.
a.
wireless notebook computers
c.
wireless networks
b.
wireless mobile labs
d.
all of the above
 

True/False
Indicate whether the sentence or statement is true or false.
 

 21. 
A communications network is a collection of computers and other equipment organized to share only hardware.
 

 22. 
Digital signals are individual electrical pulses that a computer uses to represent data.
 

 23. 
An external modem is built on a circuit board that is installed inside a computer and attaches to a telephone socket using a standard telephone cord.
 

 24. 
The most important benefit of networking school computers is that teachers and students can access the educational resources available on the Internet.
 

 25. 
The original ARPANET was a local area network consisting of a single main computer.
 

 26. 
Because of its primitive technology, NSFnet served as a minor backbone network on the Internet until 1999.
 

 27. 
Because of their size, national ISPs offer fewer services and generally have a smaller technical support staff than local ISPs.
 

 28. 
Dial-up access is the fastest way to connect to the Internet.
 

 29. 
A satellite modem provides high-speed Internet connections.
 

 30. 
A Web site is a collection of unrelated Web pages.
 

 31. 
Branching off and investigating related topics as you encounter them is a nonlinear way of learning known as Web surfing.
 

 32. 
Search tools enable users to locate information found at Web sites in the United States.
 

 33. 
Web pages that use multimedia elements often include links to Web sites that contain the required plug-in or helper.
 

 34. 
Text that is animated to scroll across the screen is called a marquee.
 

 35. 
As with streaming audio, streaming video allows longer or live video images to be viewed as they are downloaded to the computer.
 

 36. 
On the Web, VR involves the display of 3-D images that can be explored and manipulated interactively.
 

 37. 
When using Internet telephony, the spoken digital signals are converted to analog signals.
 

 38. 
Schools help protect students from the negative aspects of the Internet by using filtering software, firewalls, and teacher observation.
 

 39. 
:| is a popular emoticon used to express indecision.
 

 40. 
In the next few years, one hundred thousand wireless communication devices will be in use worldwide.
 

Completion
Complete each sentence or statement.
 

 41. 
____________________ refers to the transmission of data and information between two or more computers using a communications channel.
 

 

 42. 
A(n) ____________________ is a high-speed network that connects regional and local networks to the Internet.
 

 

 43. 
A(n) ____________________ enables users to locate information found at Web sites all over the world.
 

 

 44. 
A(n) ____________________ is a type of search tool that allows users to navigate to areas of interest without having to enter keywords.
 

 

 45. 
Many Web pages use ____________________, which is the combination of graphics, animation, audio, video, and virtual reality (VR).
 

 

 46. 
A(n) ____________________ is a small version of a larger graphical image that usually can be clicked to display the full-sized image.
 

 

 47. 
____________________ enables a user to listen to the sound file from a Web page as it downloads to a computer.
 

 

 48. 
____________________ is the transmission of messages and files via a computer network.
 

 

 49. 
____________________ is an Internet standard that allows the exchange of files with other computers on the Internet.
 

 

 50. 
The entire collection of Internet newsgroups is called ____________________.
 

 



 
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