Name: ________________________ Class: ___________________ Date: __________ ID: A

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ACE Ch 5 Review

True/False

Indicate whether the statement is true or false.

____ 1. A network is fundamentally a communication system.

____ 2. When you talk to someone, the transmission medium is your voice.

____ 3. A faster frequency means a slower data transmission rate.

____ 4. The FCC has defined broadband as faster than 200 Kbps. Almost everyone today would consider 200 Kbps

to be an extremely fast connection.

____ 5. Coaxial cable is slower than Cat 1 and 2 twisted pair copper cables.

____ 6. Wireless phone conversations, wireless computer networks, global positioning systems, police and

emergency communications, satellite communications, and wireless clock systems all make use of radio

waves.

____ 7. Microwave signals are used for high-speed, high-capacity communication links and satellite communications.

____ 8. Hubs and switches are seldom combined.

____ 9. Microwave transmission is also called orbital microwave.

____ 10. A microwave link can carry a large percentage of the capacity of a fiber-optic strand.

____ 11. T3 lines carry 72 signals on one line and are used by telecommunications companies.

____ 12. A large organization might employ dozens of network administrators.

____ 13. A network operating system performs the same types of functions for the network as operating system

software performs for a computer.

____ 14. A token ring is compatible with Ethernet.

____ 15. Each cell tower has a transmission and receiving range of 3–15 miles depending on geography and

environment.

____ 16. Today’s cell phone networks are nearly all digital.

____ 17. Areas around access points where users can connect to the Internet are often called warmspots.

____ 18. There are more wide area networks than any other network type.

Name: ________________________ ID: A

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____ 19. A wide area network (WAN) connects LANs and MANs between cities, across country, and around the

world using microwave and satellite transmission or telephone lines.

____ 20. Governments and companies can avoid their own country’s laws by processing data within the boundaries of

other countries, sometimes called data havens, that have few restrictions on telecommunications or databases.

Modified True/False

Indicate whether the statement is true or false. If false, change the identified word or phrase to make the statement true.

____ 21. Data communications, a specialized subset of telecommunications, refers to the electronic transmission and

reception of digital data, typically between computer systems. _________________________

____ 22. A telecommunications network connects communications and computing devices.

_________________________

____ 23. Signal frequency is measured in megabytes, or cycles per second. _________________________

____ 24. Broadband is considered to be any medium with a speed less than 200 Kbps. _________________________

____ 25. Twisted pair and coaxial cables transmit microwave signals over copper or other metal wires.

_________________________

____ 26. A(n) radio wave is an electromagnetic wave transmitted through an antenna at different frequencies.

_________________________

____ 27. A(n) gateway modulates and demodulates signals from one form to another, typically for the purpose of

connecting to the Internet. _________________________

____ 28. A(n) satellite is a network point that acts as an entrance to another network. _________________________

____ 29. A(n) bridge determines the best path for passing a data packet between networks to its destination.

_________________________

____ 30. A communications hub is basically a microwave station placed in the Earth’s orbit.

_________________________

____ 31. Ethernet is the most widely used network standard for private networks. _________________________

____ 32. Wi-Fi technology uses wireless repeater points that wirelessly send and receive data using radio frequencies

to and from computers and other digital devices equipped with Wi-Fi cards or adapters.

_________________________

____ 33. In order to provide coverage throughout large geographic areas, many cities are incorporating wireless weave

networks that allow wireless routers to pass data over the network without being physically connected

through wires. _________________________

Name: ________________________ ID: A

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____ 34. Long Term Evolution (LTE) is a 4G wireless broadband technology that allows CDMA cellular technology

to provide very high-speed Internet access. _________________________

____ 35. Contactless payment systems make use of a(n) RFID chip embedded in a credit card, ID card, and other

device to wirelessly send data to a reader. _________________________

Multiple Choice

Identify the choice that best completes the statement or answers the question.

____ 36. ____ can be defined as the transmission of a signal from a sender to a receiver by way of a medium such as

wires or radio waves.

a. Transmissions c. Submissions

b. Communications d. Bandwidth

____ 37. Referring to the accompanying figure, the providers on the left-hand, green side (AT&T, Orange, etc.) are

____ carriers.

a. GSM c. GMA

b. CDSM d. CDMA

____ 38. Referring to the accompanying figure, the providers on the right-hand, beige side (Sprint, Verizon, etc.) are

____ carriers.

a. GSM c. GMA

b. CDSM d. CDMA

____ 39. One characteristic of communications is that the message is ____.

a. communicated directly c. either a. or b.

b. communicated by way of a signal d. neither a. nor b.

____ 40. An important characteristic of communication is that a communications signal goes through a

communications ____ such as wires or radio waves.

a. portal c. medium

b. gateway d. router

____ 41. When you read a newspaper, the transmission medium is ____.

a. your eyes c. the newspaper stand

b. the printed page d. light waves

Name: ________________________ ID: A

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____ 42. Establishing a communication link between two digital devices requires that they “speak the same language”

using ____.

a. methods c. functions

b. protocols d. encryption

____ 43. Computing devices communicate with each other via ____ systems.

a. telecommunications c. both a. and b.

b. data communications d. neither a. nor b.

____ 44. Some telecommunications devices with which you interact daily include ____.

a. phones c. televisions

b. radios d. all of the above

____ 45. There are three components of telecommunications networks that do NOT include ____.

a. networking bandwidth c. networking hardware

b. networking software d. networking media

____ 46. If you were to measure the voltage on a telephone wire during a phone conversation, you would see

fluctuations in voltages occur thousands of times per second in varying intensities that mirror the sound

waves of your voice. This type of signal is called a(n) ____ signal, and it fluctuates continuously.

a. analog c. hybrid

b. digital d. cellular

____ 47. If you measured the voltage on cables used to connect PCs, you would see a discrete voltage state—either

high or low. This is called a(n) ____ signal.

a. analog c. hybrid

b. digital d. cellular

____ 48. In computer networks, the data transmission rate is also referred to as the bandwidth and is measured in ____

per second.

a. packets c. pixels

b. bits d. data

____ 49. Today’s bandwidth options fall into one of two categories: ____ or broadband.

a. thinband c. wireband

b. narrowband d. bridgeband

____ 50. ____ percent of U.S. homes have access to broadband Internet.

a. Fifty c. Seventy

b. Sixty d. Eighty

____ 51. Three types of transmission cables are typically used to connect data communications devices that include all

of the following EXCEPT ____.

a. twisted pair copper c. fiber-optic

b. coaxial d. multicore

____ 52. ____ cable, which consists of extremely thin strands of glass or plastic bound together in a sheathing,

transmits signals with light beams.

a. Twisted pair copper c. Fiber-optic

b. Coaxial d. Multicore

Name: ________________________ ID: A

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____ 53. Telecommunications signals can travel through air using ____.

a. radio waves c. both a. and b.

b. light d. neither a. nor b.

____ 54. To receive the information being transmitted on a specific frequency, all you need is a device with a(n) ____

that allows you to tune in to that frequency.

a. antenna c. gateway

b. port d. tuner

____ 55. A DSL modem is similar to a cable modem and provides high-speed Internet service over ____.

a. telephone lines c. air waves

b. power lines d. radio waves

____ 56. Computers can connect to networks and the Internet by ____.

a. modem

b. network adapter

c. a combination of modem and network adapter

d. all of the above

____ 57. A network adapter can be a ____, PC card, or an external device that connects through a USB port that

provides an external antenna to send and receive network radio signals.

a. circuit card c. telephone line

b. circuit board d. power line

____ 58. A ____ is a small electronic box that is used as a central point for connecting a series of computers.

a. hub c. gateway

b. repeater d. bridge

____ 59. A ____ makes it possible for several users to send information over a network at the same time without

slowing each other down.

a. switch c. bridge

b. gateway d. repeater

____ 60. A ____ connects multiple network segments; it listens to each segment and repeats the signal heard on one

segment onto every other connected segment.

a. switch c. repeater

b. hub d. transistor

____ 61. A ____ connects two or more network segments and helps to regulate traffic.

a. gateway c. bridge

b. router d. hub

____ 62. A(n) ____ is a device or software that filters the information coming onto a network; it protects the network

computers from hackers, viruses, and other unwanted network traffic.

a. firewall c. gateway

b. encryption layer d. router

____ 63. Microwave transmission is a ____ medium, which means that a straight line between the transmitter and

receiver must be unobstructed.

a. straight-line c. parallel-tower

b. line-of-sight d. clear-line

Name: ________________________ ID: A

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____ 64. Microwave transmissions can be sent through the air up to distances of approximately ____ miles.

a. 11 c. 31

b. 21 d. 41

____ 65. Referring to the accompanying figure, this pad where you either wave or tap the card to pay with your credit

card is a type of ____ payment system.

a. contact c. biometric

b. contactless d. passcard

____ 66. Referring to the accompanying figure, the credit card can work with a quick tap because of the ____ chip

embedded in the card.

a. Internet c. Bluetooth

b. RFID d. NFC

____ 67. Referring to the accompanying figure, this type of quick pass technology can be used in ____.

a. cash registers c. vending machines

b. tollbooths d. all of the above

____ 68. A T1 line supports high data transmission rates by carrying ____ signals on one line.

a. 12 c. 36

b. 24 d. 48

____ 69. A multiplexer sends multiple signals or streams of information over a medium at the same time in the form of

____.

a. multiple complex signals c. a single complex signal

b. multiple simple signals d. a single simple signal

____ 70. A communications processor, sometimes called a ____ processor, is devoted to managing communications to

and from a large computer network.

a. front-end c. conversation

b. back-end d. dialog

Name: ________________________ ID: A

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____ 71. A(n) ____ device is installed at the sending computer to alter outgoing communications according to an

encoding scheme that makes the communications unintelligible during transport.

a. encryption c. biometric

b. decryption d. filtering

____ 72. A ____ is a person responsible for setting up and maintaining a network, implementing network policies, and

assigning user access permissions.

a. network administrator c. either a. or b.

b. system administrator d. neither a. nor b.

____ 73. A(n) ____ is an agreed-upon way of doing something within an industry.

a. protocol c. regime

b. standard d. edict

____ 74. ____ out of every ten people in the world subscribe to a cell phone service—that’s 4.1 billion people in all.

a. Five c. Seven

b. Six d. Eight

____ 75. A cellular network is a ____ network in which a geographic area is divided into cells with a transceiver

antenna (tower) and station at the center of each cell, to support mobile communications.

a. television c. microwave

b. radio d. computer

____ 76. ____ is the most popular international standard for mobile phones, used by over a billion people across more

than 200 countries.

a. GSM c. CSM

b. CDMA d. GDMA

____ 77. The ____ networking standard is predominantly used in the United States.

a. GSM c. CSM

b. CDMA d. GDMA

____ 78. Most cell phone carriers provide a choice of a “pay-as-you-go” plan without a contract, or a ____

subscription plan with a contract.

a. one-year c. three-year

b. two-year d. four-year

____ 79. ____ is a cell phone feature that allows you to apply unused minutes from one month to the next.

a. Anytime minutes c. Rollover

b. Credit time d. Roaming

____ 80. ____ is a cell phone feature where fees are incurred when you use your phone outside your carrier’s coverage

area.

a. Traveling c. Gliding

b. Roaming d. Local hub

____ 81. ____ phones are a solid monolith leaving the display and buttons unprotected.

a. Clamshell c. Slide

b. Bar d. Swivel

Name: ________________________ ID: A

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____ 82. ____ phones are bar phones with a cover that flips over the display and buttons.

a. Flip c. Swivel

b. Clamshell d. Slide

____ 83. A ____ phone has components, typically a keyboard, that slide out of the phone body.

a. flip c. swivel

b. clamshell d. slide

____ 84. ____ phones have components that swivel out from the main body of the phone.

a. Flip c. Swivel

b. Clamshell d. Slide

____ 85. You are not typically allowed to take a phone with you if you move to a different carrier (unless you use

tricks to “____” your cell phone).

a. recalibrate c. open

b. unlock d. zoom

____ 86. ____ are small, lightweight devices that receive signals from transmitters.

a. Pingers c. Callers

b. Pagers d. CBs

____ 87. Looking at the competitors and their products, you can see that there are three components to a successful

e-book platform that do NOT include ____.

a. an e-book reader (either a dedicated device or software for computers and mobile

devices)

b. a warehouse

c. wireless e-book delivery

d. an extensive e-book catalog

____ 88. Two technologies, ____ and Long Term Evolution (LTE), have emerged as fourth-generation (4G) solutions

to offer Internet access over large areas with speeds that rival or surpass cable and DSL.

a. Wi-Fi c. MegaWi

b. WiMax d. Bluetooth

____ 89. The last ____ refers to the part of a telecommunications network that connects to residences and businesses.

a. foot c. meter

b. yard d. mile

____ 90. Bluetooth is named after a tenth-century Danish ____.

a. explorer c. king

b. queen d. villain

____ 91. A type of wireless transmission, called infrared transmission, involves sending signals ____ via light waves.

a. through the air c. through phone lines

b. through cables d. through power lines

____ 92. ____ uses tiny transponders in tags that can be attached to merchandise or other objects and read wirelessly

using a reader.

a. RFID c. RTID

b. RLID d. RWID

Name: ________________________ ID: A

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____ 93. Near field communication technology is a wireless technology designed for short distances (up to ____

centimeters), aimed at utilizing cell phones for secure wireless payments.

a. 20 c. 60

b. 40 d. 80

____ 94. Devices attached to a network are called ____.

a. members c. nodes

b. workstations d. stations

____ 95. Personal computers attached to a network are often called ____.

a. members c. resources

b. workstations d. stations

____ 96. ____ provides a more intuitive and user-friendly computing environment by hiding the complexities of the

underlying system from the user.

a. Layering c. Pervasiveness

b. Transparency d. Networking

____ 97. ____ computing refers to computing that involves multiple remote computers that work together to solve a

computation problem or perform information processing.

a. Group c. Merged

b. Distributed d. Unified

____ 98. ____ computing utilizes Internet-based service providers to deliver information and computing services,

including software, business systems, and data storage, for business and personal use.

a. Sky c. Cloud

b. Ocean d. Universal

____ 99. A(n) ____ area network is the interconnection of personal information technology devices, typically

wirelessly, within the range of an individual (typically around 33 feet or 10 meters).

a. Individual c. Home

b. Personal d. Family

____ 100. A network that connects computer systems and devices within the same building or local geographical area is

a ____ area network.

a. local c. close

b. regional d. near

____ 101. A(n) ____ uses the protocols of the Internet and the Web within the confines of a private network.

a. intranet c. WAN

b. LAN d. portal

____ 102. A virtual private network (VPN) uses a technique called ____ to securely send private network data over the

Internet.

a. digging c. connecting

b. tunneling d. traversing

____ 103. A ____ area network connects networks within a city or metropolitan-size area into a larger high-speed

network.

a. city c. metropolitan

b. community d. wide

Name: ________________________ ID: A

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____ 104. Connecting corporate computer systems among organizations is the idea behind ____ data interchange (EDI).

a. external c. extensible

b. electronic d. e-mail

____ 105. ____ networking, also called HomePNA, links computers through a home’s phone wires.

a. Phone-line c. either a. or b.

b. Power-line d. neither a. nor b.

Case-Based Critical Thinking Questions

Case 5-1

Samson has seen cell phones advertised as 1G, 2G, 3G and 4G. He knows the “G” stands for generation, but

does some research to find out more.

____ 106. Samson discovers that 1G is the original ____ network.

a. analog cell phone c. analog home (wired) phone

b. digital cell phone d. digital wireless home phone

____ 107. The next generation, 2G, refers to ____ service.

a. analog cell phone c. analog home (wired) phone

b. digital cell phone d. digital wireless home phone

____ 108. Samson concludes his report by talking about the 3G and 4G cell phones. He notes that the 4G phone expects

to offer ____.

a. very high-speed access c. connections to anything digital

b. anywhere, anytime access d. all of the above

Case-Based Critical Thinking Questions

Case 5-2

Dimitri is studying electronic technology at his local junior college. The first day, the teacher passed out

pieces of cable, and asked the students to write a paragraph about each type and how they are used to connect

to the Internet.

____ 109. In his report, Dimitri said, correctly, that ____ cable is the least expensive cable option.

a. twisted pair c. fiber-optic

b. coaxial d. iron-clad

____ 110. Dimitri includes a section on ____ cable, and states that at one time it was the preferred cable for computer

networks, but that now it is primarily used for television and radio networks.

a. twisted pair c. fiber-optic

b. coaxial d. iron-clad

____ 111. In his research, Dimitri discovers that fiber-optic cable has all of the following advantages EXCEPT: ____.

a. Fiber-optic cable is less expensive than many alternatives

b. Fiber-optic strands are much smaller in diameter than many copper wires

c. Fiber-optic cables are hard to tap

d. Fiber-optic cables do not allow signals to bleed from one strand to another

Name: ________________________ ID: A

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____ 112. Dimitri also includes ____ cable which transmits signals using light beams.

a. twisted pair c. fiber-optic

b. coaxial d. iron-clad

Case-Based Critical Thinking Questions

Case 5-3

Mariah is getting used to having a cell phone. This first month she was surprised by several extra charges on

her bill, and called her cell phone service provider.

____ 113. The customer service agent explained that one of the charges was because she went over her allotted minutes

for the month. This appeared as ____ on Mariah’s invoice.

a. roaming fees c. rollover fees

b. additional minutes fees d. data usage fees

____ 114. The second fee, explained the customer service agent, was because Mariah made calls when she was located

outside the carrier’s coverage area. This appeared as ____ on Mariah’s invoice.

a. roaming fees c. rollover fees

b. additional minutes fees d. data usage fees

____ 115. On the bright side, the agent explained to Mariah that since this was her first month that she did not have any

____ minutes. But in the future, this type of unused minutes could be applied to the next month’s bill.

a. roaming c. anytime

b. rollover d. in network

Completion

Complete each statement.

116. A(n) ____________________ medium is anything that carries a signal between a sender and receiver.

117. ____________________ refers to the electronic transmission and reception of signals for communications.

118. A(n) ____________________ network is a specific type of telecommunications network that connects

computers and computer systems for data communications.

119. The speed at which an electronic communications signal can change from high to low is called the signal

____________________.

120. In everyday use, the terms ____________________ or high-speed Internet refer to a connection that is

always on or active, such as cable or DSL.

121. Twisted pair ____________________ cable consists of pairs of twisted wires covered with an insulating

layer.

122. A(n) ____________________ cable consists of an inner conductor wire surrounded by insulation, a

conductive shield, and a cover.

Name: ________________________ ID: A

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123. With fiber-optic cable, high-intensity light beams are generated by lasers and are conducted along transparent

fibers which have a thin coating called ____________________.

124. Waves sent at the high end of the radio spectrum, between 1 and 300 GHz, are called

____________________.

125. A cable ____________________ provides Internet access to PCs and computer networks over a cable

television network.

126. A(n) ____________________ is a computer circuit board, PC card, or USB device installed in a computer so

that the computer can be connected to a network.

127. Network adapters come in two basic varieties: network interface cards and ____________________.

128. A(n) ____________________ is a circuit board or PC card that, when installed, provides a port for the device

to connect to a wired network with traditional network cables.

129. A wireless ____________________ point connects to a wired network and receives and transmits data to

wireless adapters installed in computers.

130. In the telecommunications industry, a(n) ____________________ line maintains a connection only as long as

the receiver is “off the hook.”

131. A(n) ____________________ is an agreed-upon format for transmitting data between two devices.

132. A cellular ____________________ is a company that builds and maintains a cellular network and provides

cell phone service to the public.

133. A(n) ____________________ uses satellites to pinpoint the location of objects on Earth.

134. ____________________ is wireless networking technology that makes use of access points to wirelessly

connect users to networks within a range of 120–600 feet.

135. WiMAX, which stands for Worldwide Interoperability for ____________________, also known as IEEE

802.16, is a next-generation wireless broadband technology that is both faster and has a longer range than

Wi-Fi.

Name: ________________________ ID: A

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Matching

Identify the letter of the choice that best matches the phrase or definition.

a. alerts g. instant messaging

b. personalized ringtones h. 411 directory information

c. wallpaper i. e-mail

d. music ring tones j. roadside assistance

e. data plans k. caller tunes, ringback tones

f. push to talk l. phone insurance

____ 136. Customize the look of your display

____ 137. Hear tunes as recorded by original artists when your phone rings

____ 138. Have live operators answer your questions

____ 139. Access Internet services, including Web browsing and e-mail

____ 140. Have your friends hear music or sound clips when they call you rather than the usual ringtone

____ 141. Schedule news to be delivered, such as news, sports scores, and so on

____ 142. Send messages to friends on AIM, ICQ, MSN Messenger, or Yahoo! Messenger

____ 143. Hear music or sound clips when your phone rings

____ 144. Have your phone replaced for free if it is lost, stolen, or damaged

____ 145. Use carrier’s e-mail service or your own corporate server

____ 146. Get free jump starts, tire changes, refuels, lockout assistance, and towing from wherever you stall

____ 147. Connect using a walkie-talkie style interface

Essay

148. Define “global network.” What do the terms transborder data flow and data havens mean in relation to global

networks?

149. What are the advantages of cloud computing? What are the risks of using cloud computing?

150. What is the difference between a protocol and a standard? Which of these are a protocol and which are a

standard: TCP/IP, Ethernet, token ring?