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network - Coggle Diagram
network
concepts
Created when more than one device is connected together
Files are sent over a network as data packets
Shares data between computers
advantages
communication
roaming profile
sharing information
sharing resources
sharing software
disadvantages
reliance on networked resources
hacking
expensive hardware
viruses
specialist staff often required
devices/hardware
router
connects different networks together
connects everything by wifi with the antenna
connects devices to a building
switches
stores the MAC addresses of devices on a network
filters data packets to see which devices have asked for them
bridges
connects two separate networks
a computer can act as a bridge through the operating system
in charge of the messages
modem
connects the internet over a telephone line
converts digital signals into analogue signals and vice versa
types
LAN
use cables or low-power radio for the connections
confined to one building or site
MAN (metropolitan area network)
network in a city
WAN (wide area networks)
large area extent
created when several LAN's join together
uses
glass cables
satellite radio links
microwave radio links
WLAN (wireless local area network)
uses wifi to connect computers
it has a wireless switch or router
sends and receives data to the computers
topologies
BUS
STAR
computers connected to a switch or a hub
RING
HYBRID
mix of star and ring
:
intranet
private
similar services to internet
only for intranet users (need password and user)
uses
internal web pages
internal e-mail
instant messaging
shares internal documents
extranet
2 or more intranets together
internet
world-wide network
connections that link computers together
web pages
e-mail
shares files
communication by voice and video
multi-player games
videos and music
types of connection
clients - servers
the client makes a service request from the server
server provides and manages the information
p2p
equal responsibility for providing data
anyone can delete and share files
acts as a server
