Networks - hardware
- Created by: Tomiwaq
- Created on: 30-03-19 17:53
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- Networks - hardware
- NICs, switches and routers
- Network Interface Card
- Internal piece of hardware that allows devices to connect to a network
- Built into the motherboard
- Switches
- Connects devices on a LAN
- Receive data from a device then transmit to another device
- Routers
- Responsible for transmitting data between networks
- Direct packets to their destination
- Used in homes and offices to connect the LAN to the internet.
- Network Interface Card
- Cables
- Ethernet
- Used to connect devices on a LAN
- Twisted pair cables containing four pairs of twisted copper wires
- Coaxial
- Made of a single copper cables surrounded by a plastic layer and a metallic mesh
- Fibre optic
- Transmit data as light
- They are high performance
- Expensive
- Can transmit data over large distances
- Ethernet
- Wireless data
- You need a Wireless Access Point
- A WAP is a switch that allows devices to connect wirelessly
- To connect, devices need wireless capabilities
- Wi-Fi
- Wi-Fi uses 2 frequencies 2.4GHz and 5GHz.
- 2.4GHz has a higher range
- 5GHz is faster
- Bands are split into numbered channels that cover a small frequency rage
- Channels in 2.4GHz band overlap
- Its performance is affected by interference
- NICs, switches and routers
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