Intro To Computers - Ch 7 (Test)

25 July 2022
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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.
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Modem
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____ 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.
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Geosynchronous
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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.
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Dual mode
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____ is the use of networking technology to provide medical information and services.
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Telemedicine
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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.
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Network interface card
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Similar to Wi-Fi, ____ is designed to provide Internet access to fixed locations (sometimes called hotzones), but the coverage is significantly larger.
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WiMAX
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____ transmissions are used with cell phones and are sent and received via cellular (cell) towers.
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Cellular radio
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The accompanying figure displays a ____.
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Coaxial cable
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A ____ is a network that covers a relatively small geographical area, such as a home, office building, or school.
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Local area network
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In general, Wi-Fi is designed for medium-range data transfers—typically between 100 and 300 feet both indoors and outdoors.
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False
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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 wireless ____.
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Access point
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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.
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Videoconferencing
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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 wireless.
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Access point
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Robert is a medical writer for a pharmaceutical company. The company allows Robert to work from home. Robert's job is a(n) ____ job.
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telecommuting
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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. _________________________
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False
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With telesurgery, at least one of the surgeons performs the operation by controlling the robot remotely, such as over the Internet or another network. _________________________
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True
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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.
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Router
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Mobile phones are also called wireless phones.
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True
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A global positioning system (GPS) consists of ____ and a group of GPS satellites.
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GPS receivers
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In ____ transmission, data can travel in either direction, but only in one direction at a time.
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half duplex
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A ____ transmits all data received to all network devices connected to it, regardless of which device the data is being sent to.
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Hub
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Some wireless ____ are created by cities or large organizations to provide free or low-cost Internet access to residents of a particular area.
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MANs
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____ transmission is relatively uncommon in data transmissions since most devices that are mainly one-directional, such as a printer, can still transmit error messages and other data back to the computer.
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Simplex
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One type of mobile phone that is not commonly used is the ____.
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Satellite phone
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____ is a wireless standard that is designed for very short-range (10 meters, approximately 33 feet, or less) connections.
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Bluetooth
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____ is typically used with LANs that have a star topology and can be used in conjunction with twisted-pair, coaxial, or fiber-optic cabling.
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Ethernet
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The ____ allows individuals to "placeshift" multimedia content from their home TVs and DVRs to their portable computer or mobile device.
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Slingbox
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__________ technology is commonly used to monitor the status of objects, such as shipping boxes, livestock, or expensive equipment to which these types of tags are attached.
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RFID
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____ are earth-based stations that can transmit microwave signals directly to each other over distances of up to about 30 miles.
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Microwave stations
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____ refers to the amount of data that can be transferred (such as over a certain type of networking medium) in a given time period.
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Bandwidth
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____ was originally developed to carry a large number of high-speed video transmissions at one time, such as to deliver cable TV service.
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Coaxial cable
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The original first-generation cell phones were ____ and designed for voice data only.
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Analog
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____ is the use of networking technology to conduct real-time, face-to-face meetings between individuals physically located in different places.
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Videoconferencing
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Monitoring systems may also 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.
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Sensors
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A standard that is designed to connect peripheral devices, similar to Bluetooth, but that transfers data more quickly is ____.
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Wireless USB
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____ is the fastest and most current Wi-Fi standard.
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802.11n
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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.
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Collaboration software
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PC conferencing is the use of networking technology to conduct real-time, face-to-face meetings between individuals physically located in different places.
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False
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In ____ transmission, data is sent at the same time as other related data to support certain types of real-time applications that require the different types of data to be delivered at the proper speed for that application.
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Isochronous
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The ____ network consists of 24 Department of Defense satellites that are used for location and navigation purposes.
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Global positioning system
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Most networking media send data using analog signals. _________________________
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False
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With ____, data is sent one bit at a time, one after the other along a single path.
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Serial transmission
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A network, in general, is a connected system of objects or people.
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True
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The conventional phone system uses digital signals.
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False
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Communications satellites are space-based devices launched into orbit around the earth to receive and transmit microwave signals to and from earth.
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True
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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 electronically communicate with each other. _________________________
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True
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Support for TCP/IP is built into virtually all operating systems, and TCP addresses are commonly used to identify the various computers and devices on networks such as LANs. _________________________
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False
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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. _________________________
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True
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Physicians can use telemedicine to perform remote diagnosis of patients.
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True
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Transferring data from a client PC to a server is referred to as downloading.
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False
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Collaborative computing takes place via both private company networks and the Internet.
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True
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A(n) small area network (SAN) is a network that covers a relatively small geographical area, such as a home, office building, or school. _________________________
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False
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The accompanying figure shows a coaxial cable, in which pairs of copper wires are insulated with a plastic coating and twisted together.
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False
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In a bus network, all the networked devices connect to a central device (such as a server or a switch) through which all network transmissions are sent.
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False
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The most common type of mobile phone is the satellite phone.
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False
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TCP/IP uses a technique called packet switching to transmit data over the Internet. _________________________
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True
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One of the early Ethernet protocols (called 10BASE-T) supports transmission rates of 10 Mbps.
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True
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TCP/IP is the protocol used for transferring data over the Internet.
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True
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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. _________________________
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True
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The accompanying figure illustrates a(n) ring network. _________________________
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False
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With a(n) peer-to-peer (P2P) network, a central server is not used. _________________________
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True
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When parallel transmission is used, the message is sent at least one byte at one time with each bit in the byte taking a separate path.
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True
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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. _________________________
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False
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Client-server networks are frequently referred to as peer-to-peer networks.
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False
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Electronic medical monitors are available that take the vital signs of an individual (such as weight, blood-sugar readings, or blood pressure) or prompt individuals to answer questions. _________________________
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True
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GPS receivers are commonly used by individuals to determine their geographic location while hiking and to obtain driving directions while traveling.
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True
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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.
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False
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Wi-Fi is a wireless standard that is designed for very short-range (10 meters, approximately 33 feet, or less) connections. _________________________
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False
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The most common type of mobile phone is the cellular (cell) phone. _________________________
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True