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NETWORKS Pili Caceres & Guada Anchelerguez - Coggle Diagram
NETWORKS
Pili Caceres & Guada Anchelerguez
Definition
Connection between devices for sharing data
Data is broken into data packets, that are shared through different protocols.
Disadvantages
Easier to hack
Virus spread esailyt
Hardware is expensive
Dependence
Advantages
Communication
Roaming
Share files
Share devices, such as printers
Hardware devices
Modem
Connects computers to the internet
Has two functions
Modulate
digital information to analogical
Demodulate
analogical information to digital
Hub
Broadcasts data to all the devices on a network
Router
Has an antenna that makes it possible to connect everything through wifi
Switch
also shares information but only to the ones that are needed
APs
Signal repeaters
Wires
Connects all devices
Bridge
Used to connect two different LANs
Types of Networks
WAN
Connects different LANs
MAN
Connects the computers of a metropolitan area
LAN
Connects computer within the same building
WLAN
A wireless LAN
Network topologies
RING
Each device is connected to two other devices creating a ring
HYBRID
v
STAR
Each device connects to a switch or hub by a cable
BUS
All devices are connected to a cable called the bus
Types of connection in networks
Clients servers
The client is dependent on the server to provide and manage the information.
P2P
There is no main computer, they have equal hierarchy
Servers
Stores data to be used by other computers on a network.
Internet, Intranet & Extranet
Intranet
A computer network based on the internet but designed for only one organisation
Requires a user name and a password
Extranet
An intranet that is allowed to go beyond the organisation with the same advantages
Internet
A worldwide collection of networks
Uses a MAC address to identify the devices and send data packages to them
