Computer Networks and protocols Flashcards
What is the internet?
A worldwide system of interconnected computer networks and electronic devices that communicate with each other using an established set of protocols.
What is a computer network?
A group of two or more computers connected together to share information and data.
What is a Network interface card (NIC)?
A piece of hardware which enables a wired network connection between a computer and another networked device.
What is a Wireless access point (WAP)?
A piece of hardware which connects to a wired network and provides wireless network radio signal for wireless devices to connect to
What is a Switch?
A piece of hardware which enables multiple wired devices to connect, and uses packet switching to direct data to the correct device
What is a Router?
A piece of hardware which Responsible for moving data from one network to another, e.g. from your home network to the internet.
What is a Modem?
Converts data from analogue to digital
signals so that it can be transmitted across
different media — traditionally, telephone cables. Modems act as a bridge between your ISP’s network and your home network, ensuring that your devices can access the internet.
Wireless network interface card (WNIC)?
Performs a similar function to the network interface card but uses radio signals to connect to the network.
What are the 2 most commonly used cables for networking?
Ethernet cables, and Fibre optic cables.
Which type of networking cable is faster? And which is more expensive?
Fibre optic cables are a lot faster, however are a lot more expensive than ethernet cables.
What is a LAN?
A LAN (Local Area Network) is a network confined to a small area like a home or office, often using wired connections
What is a WAN?
A WAN (Wide Area Network) spans larger geographical areas, connecting multiple LANs, such as the internet
What is a PAN?
A PAN (Personal Area Network) is the smallest type, connecting devices around a single person, typically using Bluetooth
What is a WLAN?
A WLAN (Wireless Local Area Network) is a LAN that uses wireless technology, like Wi-Fi, instead of cables.
What does a network topology mean?
A network topology describes the arrangement of nodes (devices) and connections within a network, both physically and logically, influencing how data flows and devices communicate.
Main topologies:
- Bus (not in specification)
- Ring (not in specification)
- Star
- Mesh
What is a star network?
Where all devices in the network are connected to a central hub (server) or switch.
What is a mesh network?
Where all devices in the network are connected to each other, with no central hub.
