Deck 7: Networks and Communication Devices

Question 1

Conventional telephone systems use digital signals.

Answer 1

False

Question 2

A bus network uses a central device (such as a server or a switch) to which all network devices connect and through which all network data
is sent.

Answer 2

False

Question 3

Some monitoring systems in use today use the RFID tags and RFID readers to monitor the status of objects (such as shipping boxes, livestock, or expensive equipment) to which the RFID tags are attached.

Answer 3

True

Question 4

Because geosynchronous satellites are so close above the surface of the earth, there is no delay while signals travel from earth, to the satellite, and back to earth again.

Question 5

A personal area network (PAN) is a small network of two or more personal devices for one individual, such as a personal computer, smartphone, headset, tablet, portable speaker, smart watch, and/or printer.

Question 6

When parallel transmission is used, a group of bits are sent at the same time, and each bit takes a separate path.

Question 7

Transferring data from a client to a server is called downloading.

Question 8

A network, in general, is a connected system of objects or people.

Question 9

In general, Wi-Fi is designed for medium-range data transfers-typically between 100 and 300 feet both indoors and outdoors.

Question 10

GPS receivers are commonly used by individuals to determine their geographic location while hiking and to obtain driving directions while traveling.

Question 11

Client-server networks are frequently referred to as peer-to-peer networks.

Question 12

A coaxial cable is a networking cable consisting of wire strands twisted in sets of two and bound into a cable.

Question 13

Physicians can use telemedicine to perform remote diagnosis of patients.

Question 14

The trend toward online collaboration is usually called workgroup computing.

Question 15

One of the early Ethernet protocols (called 10BASE-T) supports transmission rates of 10 Mbps.

Question 16

The most common type of mobile phone is the satellite phone.

Question 17

Videoconferencing is the use of networking technology to conduct real-time, face-to-face meetings between individuals physically located in different places.

Question 18

Communications satellites are space-based devices launched into orbit around the earth to receive and transmit microwave signals to and from earth.

Question 19

Mobile phones are also called wireless phones.

Question 20

TCP/IP is the protocol used for transferring data over the Internet.

Question 21

Electronic medical monitors take the vital signs of an individual (such as weight, blood-sugar readings, or blood pressure) or prompt an individual to answer questions. _________________________

Question 22

The ____ network consists of 24 Department of Defense satellites that are used for location and navigation purposes.

A) location positioning system (LPS)
B) satellite positioning system (SPS)
C) cellular phone
D) global positioning system (GPS)

Question 23

A(n)  ring network  uses a central cable to which all network devices connect. _________________________

Question 24

With telesurgery , at least one of the surgeons performs the operation by controlling the robot remotely over the Internet or another network. _________________________

Question 25

With a(n) peer-to-peer (P2P) ​network , a central server is not used. _________________________

Question 26

A  GPS receiver  measures the distance between the receiver and ____  GPS satellites simultaneously to determine the receiver's exact geographic location.

A) two
B) three
C) four
D) five

Question 27

Companies that provide mobile phone services are commonly called wireless providers . _________________________

Question 28

A(n) small area network (SAN) is a network that covers a relatively small geographical area, such as a home, an office building, or a school. _________________________

Question 29

The RedStar system built into many GM cars uses GPS to locate vehicles when the occupant activates the service or when sensors indicate that the car was involved in an accident. _________________________

Question 30

TCP/IP uses  packet switching to transmit data. _________________________

Question 31

Wi-Fi is a wireless standard that was originally designed for very short-range (10 meters, approximately 33 feet, or less) connections. _________________________

Question 32

A(n) computer network is a collection of computers and other hardware devices connected together so that network users can share hardware, software, and data, as well as communicate with each other electronically. _________________________

Question 33

With a(n) partial mesh ​ topology , some devices are connected to all other devices, but some are connected only to those devices with which they exchange the most data. _________________________

Question 34

Most networking media send data using analog ​signals . _________________________

Question 35

There must be 24 GPS satellites in orbit at any given time in order to have at least ____ satellites in view from anywhere on the planet.

A) three
B) four
C) ​five
D) six

Question 36

An emerging type of mobile phone is the cellular/satellite ____ phone that can be used with cellular service when it is available and then switches to satellite service when cellular service is not available.

A) dual-mode
B) dual-core
C) duplex
D) digital

Question 37

Because there may be many Bluetooth devices within range, up to 10 individual Bluetooth networks (called piconets ) can be in place within the same physical area at one time. _________________________

Question 38

Support for TCP/IP is built into operating systems, and TCP addresses are commonly used to identify the various devices on computer networks. _________________________

Question 39

A(n) star network uses a number of different connections between network devices so that data can take any of several possible paths from source to destination. _________________________

Question 40

One type of mobile phone that is not commonly used is the ____.

A) roaming phone
B) landline phone
C) satellite phone
D) analog phone

Question 41

____ are earth-based stations that can transmit microwave signals directly to each other over distances of up to about 30 miles.

A) Satellite stations
B) RFID stations
C) Wi-Fi stations
D) Microwave stations

Question 42

The technique used for data sent over the Internet is ____.

A) docket switching
B) wideband switching
C) packet switching
D) data switching

Question 43

In ____, data can move in both directions at the same time, such as with a telephone.

A) full-duplex  transmission
B) full-simplex  transmission
C) half-simplex  transmission
D) half-duplex  transmission

Question 44

A(n) ____ is a network designed to service an urban area, typically a city or county.

A) supernet
B) metropolitan area network (MAN)
C) local area network (LAN)
D) intranet

Question 45

____ transmissions are radio signals sent to and from cell phones via cellular (cell) towers.

A) PM radio
B) Wi-Fi radio
C) Cellular radio
D) Satellite radio

Question 46

Monitoring systems may use ____, which are devices that respond to a stimulus (such as heat, light, or pressure) and generate an electrical signal that can be measured or interpreted.

A) transmitters
B) interpreters
C) IAs
D) sensors

Question 47

____ was originally developed to carry a large number of high-speed video transmissions at one time, such as to deliver cable TV service.

A) Twisted-pair cable
B) Fiber-optic cable
C) Coaxial cable
D) Single-wire cable

Question 48

In ____, data is sent when it is ready but all data must be delivered at the time that it is needed.

A) synchronous  transmission
B) isochronous  transmission
C) asynchronous  transmission
D) endrosynchronous  transmission

Question 49

In ____, data can travel in either direction, but only in one direction at a time.

A) duplex  transmission
B) simplex  transmission
C) half-simplex  transmission
D) half-duplex  transmission

Question 50

With ____, data is sent one bit at a time, one after the other along a single path.

A) serial transmission
B) parallel transmission
C) digital transmission
D) wireless transmission

Question 51

In a ____ network, each computer or device is connected to multiple (sometimes all of the other) devices on the network.

A) bus
B) star
C) ring
D) mesh

Question 52

Microsoft Office markup tools and specialized ____ are used in conjunction with networking technology to allow multiple individuals to edit and make comments in a document without destroying the original content.

A) collaboration software
B) online software
C) job software
D) OCR software

Question 53

____ networks use a central device to connect each device directly to the network.

A) Star
B) Ring
C) Bus
D) Mesh

Question 54

____ is the use of computers, video cameras, microphones, and networking technologies to conduct face-to-face meetings over a network.

A) Online conferencing
B) Videoconferencing
C) Phone conferencing
D) VoIP conferencing

Question 55

____ is relatively uncommon in data transmissions because most devices that are mainly one-directional, such as a printer, can still transmit error messages and other data back to the computer.

A) Half-duplex  transmission
B) Simplex  transmission
C) Full-duplex  transmission
D) Asynchronous  transmission

Question 56

The ____ is designed to placeshift multimedia content; that is, to allow individuals to view their multimedia content at a more convenient location.

A) Artbox
B) Slingbox
C) GPSMedia
D) ​ShiftMedia ​

Question 57

____ refers to the amount of data that can be transferred (such as via a bus or over a certain type of networking medium) in a given time period.

A) Bandwidth
B) Bluetooth
C) Modulation
D) Throughband

Question 58

____ is the use of networking technology to provide medical information and services.

A) Telecommuting
B) Remote medicine
C) Telemedicine
D) Remote health

Question 59

____  cables are continually being improved to increase speed. The fastest cables under development today use multiple cores and/or multiple wavelengths to transmit data as fast as 255 Tbps.

A) Coaxial
B) Twisted pair
C) Fiber-optic
D) Single-wire

Question 60

Some wireless ____ are created by large organizations to provide free or low-cost Internet access to area residents .

A) WANs
B) MANs
C) LANs
D) PANs

Question 61

Case-Based Critical Thinking Questions Case 7-2 Gabrielle is the network administrator at a medium-sized company. One of her responsibilities is to purchase network devices to maintain the company network. Gabrielle is planning to connect selected devices to the network wirelessly with a ____.

A) hotspot
B) wireless  access point
C) hub
D) switch

Question 62

____________________ phones are most often used by individuals-such as soldiers, journalists, wilderness guides, and researchers-traveling in remote areas where continuous cellular service might not be available.

Question 63

Two original communications networks are broadcast television networks and ____________________.

Question 64

____ satellites travel at a speed and direction that keeps pace with the earth's rotation, so they appear (from earth) to remain stationary over a given spot.

A) Microwave
B) Geosynchronous
C) Isochronous
D) Full-duplex transmission

Question 65

Technically, to be called a ____, a device must convert digital signals (such as those used by a computer) to modulated analog signals (such as those used by conventional telephone lines) and vice versa.

A) hub
B) modem
C) switch
D) router

Question 66

Mobile phones are phones that use a(n) ____________________ network for communications instead of being connected to the regular telephone network.

Question 67

____ is a proposed Wi-Fi standard; expected to support speeds of more than 2 Gbps.

A) 802.11a
B) 802.11g
C) 802.11ax
D) 802.11ac

Question 68

The term communications, when used in a computer context, refers to ____________________.

Question 69

Case-Based Critical Thinking Questions Case 7-1 Robert is a medical writer for a pharmaceutical company. The company allows Robert to work from home. Robert's job is a(n) ____ job.

A) telemarketing
B) telecommuting
C) videoconferencing
D) e-working

Question 70

____________________ can be included in a network anytime there is a situation with measurable criteria that needs precise, automatic, and continual monitoring.

Question 71

A network adapter, also called a ____ when it is in the form of an expansion card, is used to connect a computer to a network.

A) network interface card (NIC)
B) powerline card
C) data communications card (DCC)
D) USB

Question 72

Case-Based Critical Thinking Questions Case 7-2 Gabrielle is the network administrator at a medium-sized company. One of her responsibilities is to purchase network devices to maintain the company network. Gabrielle realizes that to improve network performance, she needs to buy and install a ____, which identifies the device on the network for which the data is intended and sends the data to that device only.

A) switch
B) node
C) bus
D) bridge

Question 73

One of the key enhancements in ____ is energy efficiency.

A) piconets
B) PANs
C) Bluetooth 5.0
D) Bluetooth Smart

Question 74

A ____ transmits all data received to all network devices connected to it, regardless of which device the data is being sent to.

A) bridge
B) router
C) gateway
D) hub

Question 75

Similar to Wi-Fi, ____ is designed to provide Internet access to fixed locations (sometimes called hotzones), but the coverage is significantly larger.

A) WinMax
B) EMax
C) 802.16a
D) 802.11b

Question 76

Case-Based Critical Thinking Questions Case 7-2 Gabrielle is the network administrator at a medium-sized company. One of her responsibilities is to purchase network devices to maintain the company network. Gabrielle would like to purchase a new ____, which would be used to connect the company's LAN and the Internet.

A) hub
B) USB port
C) router
D) bridge

Question 77

The original first-generation cell phones were ____ and designed for voice data only.

A) digital
B) discrete
C) analog
D) magnetic

Question 78

____ is typically used with LANs that have a star topology and can be used in conjunction with twisted-pair, coaxial, or fiber-optic cabling.

A) Ethernet
B) Token Ring
C) Wi-Fi
D) 80xx2.11

Question 79

Case-Based Critical Thinking Questions Case 7-1 Robert is a medical writer for a pharmaceutical company. The company allows Robert to work from home. Every day, Robert uses ____ to have a real-time, face-to-face meeting with his boss.

A) intranets
B) telemarketing
C) virtual networks
D) videoconferencing

Question 80

____ is a networking standard for very short-range wireless connections; the devices are automatically connected once they get within the allowable range.

A) IrDA
B) xMax
C) Wi-Fi
D) Bluetooth