7: Computer Networks

Question 1

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

Answer 1

computer network

Question 2

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

Answer 2

mobile phone

Question 3

a mobile phone that communicates via a cellular network

Answer 3

cellular (cell) phone

Question 4

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

Answer 4

dual-mode phone

Question 5

a mobile phone that communicates via satellite technology

Answer 5

satellite phone

Question 6

a system that uses satellites and a receiver to determine the exact geographic location of the receiver - used for directions

Answer 6

global positioning system (GPS)

Question 7

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

Answer 7

videoconferencing

Question 8

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

Answer 8

telecommuting

Question 9

the use of networking technology to provide medical information and services

Answer 9

telemedicine

Question 10

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

Answer 10

telesurgery

Question 11

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

Answer 11

wired network

Question 12

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

Answer 12

wireless network

Question 13

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

Answer 13

star network

Question 14

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

Answer 14

bus network

Question 15

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

Answer 15

mesh network

Question 16

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

Answer 16

personal area network (PAN)

Question 17

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

Answer 17

local area network (LAN)

Question 18

a network designed to service a metropolitan area

Answer 18

metropolitan area network (MAN)

Question 19

a network that connects devices located in a large geographical area

Answer 19

wide area network (WAN)

Question 20

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

Answer 20

intranet

Question 21

an intranet that is at least partially accessible to authorized outsiders

Answer 21

extranet

Question 22

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

Answer 22

virtual private network (VPN)

Question 23

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

Answer 23

digital signal

Question 24

a type of signal where the data is represented by continuous waves

Answer 24

analog signal

Question 25

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

Answer 25

serial transmission

Question 26

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

Answer 26

parallel transmission

Question 27

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

Answer 27

twisted-pair cable

Question 28

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

Answer 28

coaxial cable

Question 29

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

Answer 29

fiber-optic cable

Question 30

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

Answer 30

cellular radio

Question 31

an Earth-based device that sends and receives high-frequency, high-speed radio signals

Answer 31

microwave station

Question 32

an earth-orbiting device that relays communications signals over long distances

Answer 32

communications satellite

Question 33

a wireless networking medium that sends data as infrared light rays

Answer 33

infrared (IR) transmissions

Question 34

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

Answer 34

TCP/IP

Question 35

the most widely used wired LAN networking standard

Answer 35

Ethernet (802.3)

Question 36

a widely used networking standard for medium-range wireless networks

Answer 36

Wi-Fi (802.11)

Question 37

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

Answer 37

WiGig (802.11ad)

Question 38

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

Answer 38

WiMAX (802.16)

Question 39

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

Answer 39

Bluetooth

Question 40

a wireless version of USB designed to connect peripheral devices

Answer 40

Wireless USB

Question 41

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

Answer 41

Wi-Fi Direct

Question 42

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

Answer 42

Ultra Wideband (UWB)

Question 43

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

Answer 43

WirelessHD (WiHD)

Question 44

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

Answer 44

TransferJet

Question 45

a network interface, such as an expansion card or external network adapter

Answer 45

network adapter

Question 46

an expansion card through which a computer can connect to a network

Answer 46

network interface card (NIC)

Question 47

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

Answer 47

modem

Question 48

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

Answer 48

switch

Question 49

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

Answer 49

router

Question 50

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

Answer 50

wireless access point

Question 51

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

Answer 51

wireless router

Question 52

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

Answer 52

bridge

Question 53

a device on a network that amplifies signals

Answer 53

repeater

Question 54

a repeater for a wireless network

Answer 54

range extender

Question 55

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

Answer 55

antenna

Question 56

the original telephone network, still used today for conventional landline phones

Answer 56

plain old telephone service (POTS)

Question 57

networks that include both clients (computers and other devices on the network that request and utilize network resources) and servers (computers that are dedicated to processing client requests)

Answer 57

client-server networks

Question 58

network with no central server - all the computers on the network work at the same functional level, and users have direct access to the computers and other devices attached to the network

Answer 58

peer-to-peer (P2P) network

Question 59

data is sent in blocks and the blocks are timed so that the receiving device knows when they will arrive

Answer 59

synchronous transmission

Question 60

data is sent one byte at a time, along with a start bit and a stop bit

Answer 60

asynchronous transmission

Question 61

the entire transmission is sent together after requesting and being assigned the bandwidth necessary for all the data to arrive at the correct time

Answer 61

isochronous transmission

Question 62

data travels in a single direction only

Answer 62

simplex transmission

Question 63

data can travel in either direction, but only in one direction at a time (ex. walkie talkie)

Answer 63

half-duplex transmission

Question 64

data can move in both directions at the same time (ex. telephone)

Answer 64

full-duplex tranmission

Question 65

data uses a dedicated path from the sender to the recipient

Answer 65

circuit switching

Question 66

data is sent as individual packets, which are assembled at the recipient’s destination

Answer 66

packet switching

Question 67

data is sent to all nodes within range; the designated recipient retrieves the data

Answer 67

broadcasting