Data transmission rate of a communication channel is measured in
Bits per Second
Computer network that used inside an office building or in a class room
LAN (Local Area Network)
Most common technologies used to build LAN
Ethernet and WiFi
Computer network that spread over a city
MAN (Metropolitan Area Network)
Example of MAN
Network used in cable TV
Computer network that spans a large geographical area
WAN (Wide Area Network)
Computer network that interconnects countries
WAN
Biggest wide area network is
Internet
Computer network that connecting personal devices
PAN (Personal Area Network)
Internet protocol suit is commonly known as
TCP\IP
TCP\IP stands for
Transmission Control Protocol\Internet Protocol
TCP\IP came into being in the year
1982
No of Layers in TCP\IP Model
4
No of Layers in OSI Model
7
Routers operate in which layer of OSI model
Network Layer
Network which is known as international network
Internet
Network which is considered as ancient form of internet
ARPANET
ARPANET was developed buy
American department of defence
Internet in India was started by
VSNL (Videsh Sanchar Nigam Limited)
Commonly used internet access methods are
Dial up, ISDN, DSL, Cable Modem
Websites which helps to upload videos
YouTube, Facebook, Yahoo Video, My Video
Country having most number of internet users
China
India's position in no of internet users
Second
Methode of protecting data by copying it from the original source to a different destination
Backup
Technology used in intranet to share information, hardware and other resources is
Internet Protocol Technology
Network of computers within an organization which follows the same protocol as internet and provide same service as internet
Intranet
Closed online connection of two or more organizatios
Extranet
Device which acts as analog to digital and digital to analog signal converter
Modem
Device that helps to transmit signals through telephone lines
Modem
Modem stands for
Modulator demodulator
Device which connects more than one computer together in a network
HUB
Device that takes data comes from one channel and send to all other channel in the network
HUB
Device known as concentrator
HUB
ISP stands for
Internet Service Provider
Example for Internet service provider
VSNL, Asianet, Reliance
Medium that is used to transmit data at high speed over internet in the form of light
Optical Fibre Cable
Device that receives a signal and transmits it at a higher level or higher power
Repeater
Device which enables movement of data from one network to another network
Router
Device mounted on a communication satellite which receives, amplifies, retransmit signals from earth station
Transponder
Device using to routes between networks
Gateway
Device which used to connect two segments of a LAN or two LAN
Bridge
A short range wireless technology used to connect and exchange information between devices
Bluetooth
WiFi stands for
Wireless Fidelity
Example of wireless local area network
WiFi
WiMAX stands for
Worldwide Interoperability for Microwave Access
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