Communication and Network

Modulation

In electronics, modulation is the process of varying one or more properties of a high-frequency periodic waveform, called the carrier signal, with a modulating signal which typically contains information to be transmitted.In telecommunications, modulation is the process of conveying a message signal, for example a digital bit stream or an analog audio signal, inside another signal that can be physically transmitted. The purpose of modulation is usually to enable the carrier signal to transport the information in the modulation signal to some destination.

Demodulation

Demodulation is the act of extracting the original information-bearing signal from a modulated carrier wave. A demodulator is an electronic circuit or computer program in a software defined radio that is used to recover the information content from the modulated carrier wave.

Bandwidth

Bandwidth also known as analog bandwidth is use to measure of the width of a range of frequencies, measured in hertz and bits per second,bps.

TCP/IP

The Internet Protocol Suite is the set of communications protocols used for the Internet and other similar networks. It is commonly also known as TCP/IP named from two of the most important protocols in it: the Transmission Control Protocol (TCP) and the Internet Protocol (IP), which were the first two networking protocols defined in this standard.

Node

In general, a node is a localised swelling or "knot" or a point of intersection. It is an active device attached to a computer network or other telecommunications network, such as a computer or a switch, or a point in a network topology at which lines intersect or branch.

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. The term was first applied to devices that were not capable of running their own stand-alone programs, but could interact with remote computers via a network. These dumb terminals were clients of the time-sharing mainframe computer.

Server

In computer networking, a server is a program that operates as a socket listener. The term server is also often generalized to describe a host that is deployed to execute one or more such programs.

Network Operating System

A networking operating system, NOS, also referred to as the Dialoguer, is the software that runs on a server and enables the server to manage data, users, groups, security, applications, and other networking functions. The network operating system is designed to allow shared file and printer access among multiple computers in a network, typically a local area network,LAN , a private network or to other networks.

Network Administrator

A network administrator is a person responsible for the maintenance of computer hardware and software that comprises a computer network. This normally includes deploying, configuring, maintaining and monitoring active network equipment.