Communication and Network

Modulation

 Modulation is a process that causes a shift in the range of frequencies in a signal where it converts the message signal from digital to analog. It enabled the signal to transport the information that it carried in the signal to some destination.  It can be applied to direct current to alternating current and to optical signal. 

Demodulation

 

It is the extracting of the information from the modulated waves in which an output wave or signal is obtained by having the characteristics of the original waves. It is the process of converting from analog to digital. 

Bandwidth

It is to calculate the capability of the communication channel where how much information can move across the communication channel in a given amount of time.

TCP/IP

Transmission control protocol/Internet protocol, in short TCP/IP,  it is a communication protocols that is connect to the host using the internet. It has 2 features that involve identifying sending and receive device, and breaking information into small parts to transmit across the internet.

Node

 Node is an active device that is connect to a network. Every node has a unique network address, sometimes called a Data Link Control (DIC) adress or Media Access Control (MAC) address.

Client

A client is an application or system that accesses a remote service on another computer system, known as a server, by way of a network in which it applied to devices that were not capable of running their own stand-alone programs, but could interact with remote computers via a network.

Server

A server which sometimes called an enterprise server, is a computer system that provides essential services across a network, to private users inside a large organization or to public users in the internet. it is usually large in size.

Network Operating System

 

Network Operating System in short NOS is to control the activity in the internet from all the computer. It is usually for sharing information and resources in communication form one computer to another.

Network Administrator

The Administrator is the USER (or group of users) who has control over how the others users (network clients) access and use the network resources. Network administrators manage the use of resources and services used on the network.