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Network Communications Technology - Coggle Diagram
Network Communications Technology
WIFI
Wireless Fidelity
Devices are fitted with a built in wireless adapter, allowing users to connect to a wi-fi network.
No need for cabled connection as it uses radio waves and a wireless router.
Often secured by a username/password
Data can be transferred up to 54Mb/s.
Cons
Signal strength varies depending on how far you are from the wireless router.
If wifi access is unsecure than criminals can access it from outside the house.
Pros
No need for cabling (you can be flexible and move around).
Easier to share the network amongst many users.
Bluetooth
Uses short range wireless technology (radio signals).
Connects two devices together, allowing data transfer.
Need to be in close proximity.
Have to synchronise first.
Cheap to use.
No need for router, as the devices pair directly to each other.
Uses a lot less power than other wireless technologies.
Uses include hands free phone calls and wireless mouse/keyboard.
Optical fibre
Uses very thin glass strands to send data at very fast transmission speeds.
Data is transmitted as pulses of light.
Each strand carries one data signal – so many strands are sending information at once.
Cannot be interfered with by hackers (unlike copper cables).
Higher bandwidth so a large capacity of data can be sent at once.
Expensive to install as it requires repeaters for data to be sent over long distances.
Mobile Communications Technology
2G/3G/4G (generation technology) is capable of high speed data access.
Expensive set up/hardware so coverage is focused on high population areas.
5G is more reliable and works across a better range and greater speed than 4G.
One drawback is that it uses a lot of battery.