Communication and Network

MODULATION




A modulator is a process of differencing one or more properties of a high frequency waveform which is called a carrier signal with a modulating system which contains information to be sent.


DEMODULATION


Demodulation is a performance of removing the original information and bearing signals from the modulator.It is also an electronic circuit that is used to get back the information.  



BANDWIDTH




A bandwidth is often used  for data transfer rate - There is a period of time that is given to carry the amount of data from one point to another.


TCP/IP


A TCP/IP is definition of a framework for computer network protocols.IT can be called an Internet Protocol Suite that describes a general design of guidelines of a certain network protocol that allows computers to communicate over a network.

NODE




A node can be a device or a computer just like a printer. Each node is unique because it has each  its own unique network address.

CLIENT



A client is the entreating program in a server relationship .the user of a web browser is effectively allowing servers request pages from other servers.

SERVER




 A server is a computer or device that mangers network resources it is divided to 3 types of servers which is file server which is a computer or a storage device. any user on the network can store files on the server. A print server is also a computer that managers one or more printers/ and finally a database server is a computer system that processes the database.Server is dedicated. which means they don't do any other task besides the server task.

NETWORK OPERATING SYSTEM




Network operating System or also can be called (NOS) is an operating system that includes some special functions for connecting computers and devices in your a local area network.




NETWORK ADMINISTRATOR




A network administrator is a person who is responsible for maintenance of computer hardware and software.it includes deploying, configuring, maintaining and monitoring.they always concentrate on the overall integrity of the network.