Networks

Networks

1. Hardware

   • Switch
     • The switch makes sure all of the devices can connect to the LAN. They can connect to other switches and routers
   • Ethernet Cable
     • The Ethernet Cable connects your device to the router/switch.
   • Router
     • This makes sure the devices can connect to the centre of the LAN. The majority of Routers can connect to WANs by using a Modem.
   • Network Interface Card
     • Devices that connect to either a LAN or WAN must have one of these. It will connect the device to a switch or any wireless access point.
   • Wireless Access Point
     • They are used to connect portable devices to the LAN. They improve the signal in places the router cannot reach.
   • Server
     • A powerful computer that controls the network.
   • Modem
     • It connects you to a WAN
   • Peripherals
     • An devices that connect externally to a computer.

2. Network Types

   • LAN
     • LAN stands for Local Area Network. a LAN is a series of devices connected to a central point.
   • WAN
     • WAN stands for Wide Area Network. It connects devices to the internet in a large geographical area. Several LANs connected make a WAN.
   • WPAN
     • WPAN stands for Wireless Private Area Network. It connects devices in a very small area. An example of this would be Bluetooth speakers.

3. Keywords

   • Peripheral Device
     • A device that is connected externally to a computer. Examples include: Printer and a Computer Mouse.
   • Security
     • The protection of information from getting stolen or damaged in any way,
   • Data Transfer Speed
     • The amount of data that is moved from one place in a certain amount of time.
   • Range

4. Connection Types

   • Wifi
     • Advantages: ~ Good at connecting portable devices ~There are no wires needed
     • Disadvantages: ~ Limited signal range ~ Has a slower data transfer speed than other connection types.
   • Ethernet
     • Advantages: ~ Ethernet has a fast data transfer speed. ~ Has a range of 100 metres.
     • Disadvantages: ~ Cables are expensive. ~ Only for short distance.
   • Bluetooth
     • Positives: ~ Up to 7 things can be connected at once. ~ It isn't expensive.
     • Disadvantages: ~ Range is quite short. ~ Can be hacked
   • GPRS
     • Advantages: ~ Can be used on the move. ~ Good for phones.
     • Disadvantages: ~ Mobile data can be expensive and needs a Sim card. ~ In some places it has a low connection speed.
     • It connects to WAN.