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computer networks, networking devices - Coggle Diagram
computer networks
WLANs
adv:1-there is safety improvement and increased flexibility 2-all computers can access the same services and resources
dis:1-security can be a big issue2- there may be problems of interference ,which can affect the signal
use:they provide wireless network communications over fairly short distances using radio or infra red signals instead of cables
Wi-Fi and Buetooth
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both Wi-Fi and bluetooth offer wireless communication between devices they both use radio frequencies a the carrier of data.
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networking devices
Hubs
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its main task is to to take any data packet received at one of its port and broadcast it to every computer in the network.
Switches
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the switch checks the data packet received and works out its destination address and sends the data to the appropriate computes(s) only
Router
routers enable data packets to be routed between the different networks.For example to join a LAN to a WAN.
the router's main function is to transmit internet and transmission protocols between two networks and also allow private networks to be connected together.
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Modems
A device that converts a computer's digital signal into an analogue signal for transmission over an existing telephone line ,it also does the reverse process.
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