Topic 2 - Networks Flashcards
Data collision
When two devices on a network send data simultaneously the data packets can collide
Data packet
The unit of data that contains the information to be transmitted across a network
Ethernet
A protocol used to connect devices in a LAN using a wired connection
Data collision
Data Collision: When two devices on a network send data simultaneously, causing data packets to collide.
Data packet
Data Packet: The unit of data that contains the information to be transmitted across a network.
Ethernet
Ethernet: A protocol used to connect devices in a LAN using a wired connection.
Hub
Hub: Network hardware that devices connect to, allowing them to send data to each other in a network.
Local Area Network
Local Area Network (LAN): A type of network that is normally located within a single building or site.
Network Interface Card
Network Interface Card (NIC): A piece of hardware built into a device that allows it to have a wired or wireless connection.
IP address
IP Address: A unique address assigned to a device when it connects to a network.
Media Access Control (MAC) Address
Media Access Control (MAC) Address: A unique address assigned to the NIC in each device at the point of manufacture.
Modem
Modem: Network hardware that converts between analogue and digital signals.
Router
Router: Network hardware that reads IP addresses to send data to the correct network or device.
Routing Table
Routing Table: A database that stores all known routes across a network to different devices.
Switch
Switch: Network hardware that reads MAC addresses to send data to the correct device.
Repeater
Repeater: A network device used to boost the strength of an electrical signal.
Server
Server: A central device in a network that stores data and provides services; it accepts and responds to requests for different types of data.
Transmission Media
Transmission Media: The types of cables or signals used to transmit data across a network.
Wireless Access point
Wireless Access Point (WAP): Network hardware that transmits and receives radio wave signals.
Coaxial Cable
Coaxial Cable: A copper cable with a single central wire and insulating layers, used to transmit data across a network.
Twisted Pair Cable
Twisted Pair Cable: A copper cable with two twisted wires, used to transmit data across a network.
Fibre Optic Cable
Fibre Optic Cable: A cable made up of fine strands of glass or plastic, used for high-speed data transmission.
Powerline
Powerline: A device that plugs into a power socket and transmits data over electrical wiring to another device on the same circuit.
Electromagnetic Waves
Electromagnetic Waves: A form of radiation that travels through the air.
Infrared Light
Infrared Light: Electromagnetic radiation with wavelengths longer than visible light but shorter than radio waves; can transmit signals only over very short distances.
Microwave
Microwaves: Electromagnetic radiation used to create a wireless connection in a network; operates only over short distances.
Radio waves
Radio Waves: Electromagnetic radiation used to create a wireless connection in a network; operates over longer distances than microwaves.
Ground station
Ground Station: A base on Earth that receives and transmits radio waves to a satellite.
Satellite
Satellite: A device that orbits the Earth and uses radio waves to transmit data.
Peer
Peer: A single computer in a peer-to-peer network.
Peer-to-Peer network
Peer-to-Peer Network: A type of network that does not have a server as a central point of control; all devices are equal.
Hotspot
Hotspot: A mobile phone feature that allows other devices to tether to it for internet access.
Tethering
Tethering: The process of connecting another device to a mobile phone to use its internet connection.
Wi-Fi
Wi-Fi: A form of wireless access to the internet.
