Topic 2 - Networks

Question 1

Data collision

Answer 1

When two devices on a network send data simultaneously the data packets can collide

Question 2

Data packet

Answer 2

The unit of data that contains the information to be transmitted across a network

Question 3

Ethernet

Answer 3

A protocol used to connect devices in a LAN using a wired connection

Question 4

Data collision

Answer 4

Data Collision: When two devices on a network send data simultaneously, causing data packets to collide.

Question 5

Data packet

Answer 5

Data Packet: The unit of data that contains the information to be transmitted across a network.

Question 6

Ethernet

Answer 6

Ethernet: A protocol used to connect devices in a LAN using a wired connection.

Question 7

Hub

Answer 7

Hub: Network hardware that devices connect to, allowing them to send data to each other in a network.

Question 8

Local Area Network

Answer 8

Local Area Network (LAN): A type of network that is normally located within a single building or site.

Question 9

Network Interface Card

Answer 9

Network Interface Card (NIC): A piece of hardware built into a device that allows it to have a wired or wireless connection.

Question 10

IP address

Answer 10

IP Address: A unique address assigned to a device when it connects to a network.

Question 11

Media Access Control (MAC) Address

Answer 11

Media Access Control (MAC) Address: A unique address assigned to the NIC in each device at the point of manufacture.

Question 12

Modem

Answer 12

Modem: Network hardware that converts between analogue and digital signals.

Question 13

Router

Answer 13

Router: Network hardware that reads IP addresses to send data to the correct network or device.

Question 14

Routing Table

Answer 14

Routing Table: A database that stores all known routes across a network to different devices.

Question 15

Switch

Answer 15

Switch: Network hardware that reads MAC addresses to send data to the correct device.

Question 16

Repeater

Answer 16

Repeater: A network device used to boost the strength of an electrical signal.

Question 17

Server

Answer 17

Server: A central device in a network that stores data and provides services; it accepts and responds to requests for different types of data.

Question 18

Transmission Media

Answer 18

Transmission Media: The types of cables or signals used to transmit data across a network.

Question 19

Wireless Access point

Answer 19

Wireless Access Point (WAP): Network hardware that transmits and receives radio wave signals.

Question 20

Coaxial Cable

Answer 20

Coaxial Cable: A copper cable with a single central wire and insulating layers, used to transmit data across a network.

Question 21

Twisted Pair Cable

Answer 21

Twisted Pair Cable: A copper cable with two twisted wires, used to transmit data across a network.

Question 22

Fibre Optic Cable

Answer 22

Fibre Optic Cable: A cable made up of fine strands of glass or plastic, used for high-speed data transmission.

Question 23

Powerline

Answer 23

Powerline: A device that plugs into a power socket and transmits data over electrical wiring to another device on the same circuit.

Question 24

Electromagnetic Waves

Answer 24

Electromagnetic Waves: A form of radiation that travels through the air.

Question 25

Infrared Light

Answer 25

Infrared Light: Electromagnetic radiation with wavelengths longer than visible light but shorter than radio waves; can transmit signals only over very short distances.

Question 26

Microwave

Answer 26

Microwaves: Electromagnetic radiation used to create a wireless connection in a network; operates only over short distances.

Question 27

Radio waves

Answer 27

Radio Waves: Electromagnetic radiation used to create a wireless connection in a network; operates over longer distances than microwaves.

Question 28

Ground station

Answer 28

Ground Station: A base on Earth that receives and transmits radio waves to a satellite.

Question 29

Satellite

Answer 29

Satellite: A device that orbits the Earth and uses radio waves to transmit data.

Question 30

Peer

Answer 30

Peer: A single computer in a peer-to-peer network.

Question 31

Peer-to-Peer network

Answer 31

Peer-to-Peer Network: A type of network that does not have a server as a central point of control; all devices are equal.

Question 32

Hotspot

Answer 32

Hotspot: A mobile phone feature that allows other devices to tether to it for internet access.

Question 33

Tethering

Answer 33

Tethering: The process of connecting another device to a mobile phone to use its internet connection.

Question 34

Wi-Fi

Answer 34

Wi-Fi: A form of wireless access to the internet.