Definition of OS (Operating System)

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Ø Operating system : - It is an interface between the user and computer Or hard-ware and software combined to gather is Known as o/s

Ø Transmit : - To send data from one system to other system is called Transmit

Ø Bandwidth: - Data Transmission Speed Is Called As Bandwidth.

Ø Wins: - Windows Internet Naming Services.

Ø Repeaters: - doesn’t amplify the signals.

Ø Router: - it allows two connect to different networks.

Ø Nntp: - Network News Transfer Protocol.

Ø SMTP: - Simple Mail Transmission Protocol.

Ø HDLC: - High Level Data Link Control, used for Cisco routers.

Ø SDLC: - Sequential Data Link Control, used for IBM routers.

Ø PPP: - Point To Point Protocol.

Ø Slip: - Synchronous Line Internet Protocol.

Ø ATM: - Asynchronous Transfer Mode.

Ø IBM: - International Business Machine.

Ø LAN: - Local Area Network.

Ø MAN: - metro-politon area network.

Ø WAN: - Wide Area Network.

Ø Mbps: - Mega Bytes per Second.

Ø BNC: - British Naval/Network Connector.

Ø RJ 45: - Remote Jack or Registered Jack 45.

Ø U.T.P: - Unshielded Twisted Pair. Used for LAN

Ø S.T.P: - Shield Twisted Pair. Used for star collection

Ø C.I.D: - Central Interface Device.

Ø M.A.U: - Multi-Station Access Unit.

Ø I.S.O: - International Standard Organization.

Ø OSI: - Open System Interface/ Inter Connection.

Ø Tcp: - Transmission Control Protocol.

Ø Ip: - Internet Protocol.

Ø FOC: - Fiber Optic Cable.

Ø Ram: - Random Access Memory.

Ø Rom: - Read Only Memory. Password root.

Ø HDD: - Hard-Disk Drive.