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CIS101 > Chapter 07: Computer Networks > Flashcards

Chapter 07: Computer Networks Flashcards

1
Q

Analog signals

A

A type of signal where the data is represented by continuous waves.

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2
Q

antenna

A

A device used for receiving or sending radio signals; often used to increase the range of a network.

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3
Q

Bluetooth

A

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

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4
Q

bridge

A

A device used to bridge or connect two LANs; most often used to connect wired devices wirelessly to a network.

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5
Q

Bus network

A

A network consisting of a central cable to which all network devices are attached.

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6
Q

cellular (cell) phone

A

A mobile phone that communicates via a cellular network; also called a cell phone.

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7
Q

Cellular radio

A

A form of broadcast radio designed for use with cellular telephones that broadcasts using antennas located inside honeycomb-shaped cells.

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8
Q

Coaxial cable

A

A networking cable consisting of a center wire inside a grounded, cylindrical shield, capable of sending data at high speeds.

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9
Q

Communications satellites

A

An earth-orbiting device that relays communications signals over long distances.

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10
Q

computer network

A

A collection of computers and other hardware devices that are connected together to share hardware, software, and data, as well as to communicate electronically with one another.

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11
Q

digital signals

A

A type of signal where the data is represented by 0s and 1s.

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12
Q

dual-mode phones

A

A mobile phone that can be used with more than one communications network, such as with both a cellular and a Wi-Fi network.

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13
Q

Ethernet (802.3)

A

A widely used wired LAN networking standard.

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14
Q

extranet

A

An intranet that is at least partially accessible to authorized outsiders.

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15
Q

Fiber-optic cable

A

A networking cable that utilizes hundreds of thin transparent fibers over which lasers transmit data as light.

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16
Q

global positioning system (GPS)

A

A system that uses satellites and a receiver to determine the exact geographic location of the receiver.

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17
Q

infrared (IR) transmission

A

A wireless networking medium that sends data as infrared light rays.

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18
Q

intranet

A

A private network that is set up similar to the Internet and is accessed via a Web browser.

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19
Q

local area network (LAN)

A

A network that connects devices located in a small geographical area, such as within a building.

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20
Q

Mesh network

A

A network in which there are multiple connections among the devices on the network so that messages can take any of several possible paths.

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21
Q

metropolitan area network (MAN)

A

A network designed to service a metropolitan area.

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22
Q

Microwave stations

A

An earth-based device that sends and receives high-frequency, high-speed radio signals.

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23
Q

Mobile phones

A

A phone, such as a cellular or satellite phone, that uses a wireless network.

24
Q

modem

A

A device that enables a computer to communicate over analog networking media, such as to connect that computer to the Internet via telephone lines.

25
Q

network adapter

A

A network interface, such as an expansion card or external network adapter.

26
Q

network interface card (NIC)

A

An expansion card through which a computer can connect to a network.

27
Q

parallel transmission

A

A type of data transmission in which bytes of data are transmitted at one time, with the bits in each byte taking a separate path.

28
Q

personal area network (PAN)

A

A network that connects two or more of an individual’s personal devices when they are located close together.

29
Q

range extenders

A

A repeater for a wireless network.

30
Q

Repeaters

A

A device on a network that amplifies signals.

31
Q

router

A

A device that connects multiple networks together; routes packets to their next location in order to efficiently reach their destination.

32
Q

satellite phone

A

A mobile phone that communicates via satellite technology.

33
Q

serial transmission

A

A type of data transmission in which the bits in a byte travel the same path one after the other.

34
Q

Star network

A

A network that uses a host device connected directly to several other devices.

35
Q

switch

A

A device used to connect multiple devices on a single (typically wired) network; forwards packets to only the intended recipient.

36
Q

TCP/IP

A

A networking protocol that uses packet switching to facilitate the transmission of messages; the protocol used with the Internet.

37
Q

telecommuting

A

The use of computers and networking technology to enable an individual to work from a remote location.

38
Q

Telemedicine

A

The use of networking technology to provide medical information and services.

39
Q

telesurgery

A

A form of robot-assisted surgery in which the doctor’s physical location is different from the patient’s and robot’s physical location; the doctor controls the robot remotely over the Internet or another network.

40
Q

TransferJet

A

A networking standard for very short-range wireless connections between devices; devices need to touch in order to communicate.

41
Q

twisted-pair cable

A

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

42
Q

Ultra Wideband (UWB)

A

A networking standard for very short-range wireless connections among multimedia devices.

43
Q

Videoconferencing

A

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

44
Q

virtual private network (VPN)

A

A private, secure path over the Internet that provides authorized users a secure means of accessing a private network via the Internet.

45
Q

Wi-Fi (802.11)

A

A widely used networking standard for medium-range wireless networks.

46
Q

Wi-Fi Direct

A

A standard for connecting Wi-Fi devices directly, without using a router or an access point.

47
Q

wide area network (WAN)

A

A network that connects devices located in a large geographical area.

48
Q

WiGig (802.11ad)

A

An emerging fast, short-range wireless networking standard expected to be used for transferring large amounts of data from one device to another.

49
Q

WiMAX (802.16)

A

A wireless networking standard that is faster and has a greater range than Wi-Fi.

50
Q

wired network

A

A network in which computers and other devices are connected to the network via physical cables.

51
Q

wireless access point

A

A device on a wireless network that connects wireless devices to that network.

52
Q

wireless network

A

A network in which computers and other devices are connected to the network without physical cables; data is typically sent via radio waves.

53
Q

wireless router

A

A router with a built-in wireless access point; most often used to connect wireless devices to a network and an Internet connection and often contains a built-in switch.

54
Q

wireless USB

A

A wireless version of USB designed to connect peripheral devices.

55
Q

WirelessHD (WiHD)

A

A wireless networking standard designed for very fast transfers between home electronic devices.

CIS101 (17 decks)

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