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It uses complex mathematical algorithms and alters a message into a form that is not understandable to an unauthorized person.
Encryption
It is used to connect to a website's server and display its web pages,
Browsers
It converts analog signal to digital data and vice-versa.
Modem
A connection that uses microwave radio to exchange data.
Bluetooth
A connection that uses various radio technologies.
RFID
A connection that that is used only for very short distances.
Infrared
This offers high bandwidth (but lower than cables).
Microwave Radio
Cable that carries a beam of light.
Fiber Optic Cable
Very popular cable used for LANs.
UTP
made up of two copper conductors that usually carry TV signals.
Coaxial Cable
It connects network to other networks, such as the Internet.
Router
It transmits data to the exact port and network device.
Switch
A connection point for devices on a single network.
Hub
It requests a service from a server.
Client
It provides a service to the other computer systems.
Server
an “equal client” system
P2P
network covering a small area ex: USB
PAN
It encrypts the connection to log into a network remotely.
VPN
A network designed for employees in an organization.
Intranet
A controlled private network
Extranet
Network of networks
Internet
It uses high-frequency radio waves around the coverage area, often a home or small office.
WLAN
A network of storage devices
SAN
"as if" they exist in a LAN.
VLAN
collection of other networks
WAN
Network situated within a local office or building
LAN


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