Module 7

Question 1

antenna

Answer 1

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

Question 2

bluetooth

Answer 2

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

Question 3

computer network

Answer 3

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.

Question 4

digital signal

Answer 4

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

Question 5

Ethernet (802.3)

Answer 5

The most widely used wired networking standard. Typically used with LANs that have a star topology

Question 6

global positioning system (GPS)

Answer 6

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

Question 7

mesh network

Answer 7

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

Question 8

switch

Answer 8

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

Question 9

TCP/IP

Answer 9

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

Question 10

WirelessHD (WiHD)

Answer 10

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

Question 11

Internet

Answer 11

largest computer network in the world

Question 12

monitoring systems

Answer 12

use networking technology to determine the current location or status of an object. i.e. RFID, GPS, electronic medical monitors, home healthcare

Question 13

telecommuting

Answer 13

individuals work from remote locations (usually home) and communicate with place of business and clients using networking technology

Question 14

network topologies

Answer 14

indicates how the devices in a network are arranged

Question 15

star network

Answer 15

all network devices connected to a central device. Most common.

Question 16

bus network

Answer 16

all network devices connected to a central cable in a linear fashion

Question 17

peer-to-peer (P2P) networks

Answer 17

content exchanged over internet, directly between users.

Question 18

Personal Area Networks (PANs)

Answer 18

connects individual’s personal devices that are physical close together

Question 19

Local Area Networks (LANs)

Answer 19

connects devices connected in small geographic area

Question 20

Metropolitan Area Networks (MANs)

Answer 20

covers metropolitan areas such as a city or county and can handle higher population demands

Question 21

Wide Area Networks (WANs)

Answer 21

covers a large geographic area

Question 22

intranet

Answer 22

private network designed to be used by an organization’s employees

Question 23

extranet

Answer 23

company’s network accessible by authorized outsiders

Question 24

virtual private network (VPN)

Answer 24

private, secure path over the internet

Question 25

bandwidth

Answer 25

amount of data that can be transferred in a given period of time

Question 26

analog signal

Answer 26

data represented by continuous waves

Question 27

digital signal

Answer 27

data represented by two discrete states (0s & 1s); faster

Question 28

serial transmission

Answer 28

data sent one bit at a time, one after another, along a single path

Question 29

parallel transmission

Answer 29

group of bits sent at the same time, and each bit takes a separate path. Used more often

Question 30

twisted-pair cable

Answer 30

pairs of insulated wires twisted together. Used for telephones and LANs, Ethernet

Question 31

coaxial cable

Answer 31

thick center wire surrounded by insulation, and covered with a shield of braided wire. Used in TVs.

Question 32

fiber-optic cables

Answer 32

multiple thin glass or plastic fibers, with data sent via light pulses. Much faster.

Question 33

cellular radio transmissions

Answer 33

radio transmissions sent to and from cell phones via cell towers. Service areas are arranged in overlapping honeycomb shaped zones called cells, with each cell containing one tower.

Question 34

Wi-Fi

Answer 34

wireless networking standards

Question 35

WiMAX

Answer 35

networking standards for longer range networks, like MANs.

Question 36

network adapter

Answer 36

aka network interface card; used to connect a computer to a network

Question 37

modem

Answer 37

used to connect a computer to a network over telephone lines

Question 38

router

Answer 38

connects multiple networks

Question 39

wireless access point

Answer 39

device that allows wireless devices to connect to a network.

Question 40

bridge

Answer 40

connects two LANs

Question 41

repeaters

Answer 41

devices that amplify signals along a network

Question 42

range extenders

Answer 42

repeaters for a wireless network

Question 43

T/F: GPS systems are used only by the government.

Answer 43

false

Question 44

T/F: With serial transmissions, each bit of data is sent individually.

Answer 44

true

Question 45

T/F: The Internet is an example of a LAN.

Answer 45

false

Question 46

T/F: The type of cable used inside most homes for telephone service is twisted-pair wire.

Answer 46

true

Question 47

T/F: A router is a type of modem.

Answer 47

false

Question 48

With a(n) ___ network topology, all devices are connected in a line to a central cable.

Answer 48

bus

Question 49

A(n) ____ phone can be used with more than one communications network, such as when used with both a cellular and Wi-Fi network.

Answer 49

dual-mode

Question 50

A small network designed to connect the personal devices for an individual (such as via Bluetooth) is called a(n) ______

Answer 50

personal area network or PAN

Question 51

A(n) ______ is a network that transfers private information securely over the Internet or other public network.

Answer 51

virtual private network or VPN

Question 52

Match each description to its networking application, and write the corresponding number in the blank to the left of the description. 1. To diagnose a patient from a distance. 2. To work for a company in New York when you live in California. 3. To watch a video in the living room that is stored on your computer. 4. To receive telephone calls while you are out shopping. 5. To determine your physical location while hiking in the mountains. 1. Multimedia networking 2. GPS 3. Telemedicine 4. Telecommuting 5. Cellular phone

Answer 52

1. To diagnose a patient from a distance. 3. Telemedicine 2. To work for a company in New York when you live in California. 4. Telecommuting 3. To watch a video in the living room that is stored on your computer. 1. Multimedia networking 4. To receive telephone calls while you are out shopping. 5. Cellular phone 5. To determine your physical location while hiking in the mountains. 2. GPS