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20530327
Computer Networks
Description
GCSE Computing Mind Map on Computer Networks, created by cc . on 07/01/2020.
No tags specified
gcse
aqa
computer
science
networks
computing
gcse
Mind Map by
cc .
, updated more than 1 year ago
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Created by
cc .
over 4 years ago
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Resource summary
Computer Networks
Computer network - 2 or more devices / computers connected together that can communicate with each other / share data and resources
PAN - Personal Area Network
Bluetooth
Bluetooth headphones
Smart watch
LAN - Local Area Network
Small geographical area
Often owned and controlled/managed by a single person or organisation
WAN - Wide Area Network
The internet is the largest example of a WAN
Cover a wide geographic area
Often under collective or distributed ownership
Pros:
Data can be shared between devices
Resources can be shared between devices
Can easily monitor devices on the network
User can logon / access their files from any device connected to the network
Data is stored centrally and so easy to backup
Cons:
Hardware costs are high
Costs of employing people to manage the network are high
Single point of failure - if the server goes offline, no one can logon or access files
Speeds can decrease with high traffic
Security - malware could spread through the network / a single compromised user account could provide access to the network
Network hardware
Wired
Copper
Fibre optic
Wireless
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