Computer Networks (AQA GCSE Computer Science): Flashcards
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Definition of a computer network
Definition of a computer network
Two or more devices connected to communicate & share resources
Main purpose of creating a network
Main purpose of creating a network
Allow devices to communicate and share resources
Network advantage: sharing resources
Network advantage: sharing resources
Multiple users share equipment (printers) & internet, saving money
Network advantage: file sharing
Network advantage: file sharing
Move files between computers without USB; access from any device
Network advantage: central management
Network advantage: central management
Control & update all computers from one location
Network advantage: flexible access
Network advantage: flexible access
Log into any computer on network & access personal files/settings
Network disadvantage: costs
Network disadvantage: costs
Requires extra hardware (routers, switches) & skilled managers
Network disadvantage: security
Network disadvantage: security
Targets for hackers; malware can spread across network
Network disadvantage: dependency
Network disadvantage: dependency
Server breakdown means users can't access files or work
PAN (Personal Area Network) definition
PAN (Personal Area Network) definition
Smallest network connecting personal devices over a few meters
Common technology used in PANs
Common technology used in PANs
Bluetooth
LAN (Local Area Network) definition
LAN (Local Area Network) definition
Network covering one building or small group of nearby buildings
Connection types used in LANs
Connection types used in LANs
Wired (ethernet cables) and wireless (Wi-Fi)
WAN (Wide Area Network) definition
WAN (Wide Area Network) definition
Largest network connecting multiple LANs across large distances
Most famous example of a WAN
Most famous example of a WAN
The internet