INTERNET: Internet is a world wide network of interconnected computer networks, in which users can communicate, send/receive information through variety of methods. INTERNET CONNECTION  TYPES: There are  different types of Internet connections, you can choose from: (i) Broadband Cable Connection:  This connection type uses cable modem that works with cable TV. Cable Internet uses the TV channel space for  data-transmission. Typical speeds of  this connection type is 512Kbps to 20Kbps. (ii) Dial Up Connection:  This connection  type uses a modem to connect to Internet.  It is an economical slow, analog connection type that uses normal  telephone line to connect to Internet. Typical speeds of dial-up connections are 2400bps to 56kbps. (iii)Wireless Internet Connection: This connection type uses  radio-frequency  bands for data transfer. It is kind of always-on connection. Various wireless technologies  like Wifi, WiMax etc....

 Network Operating System An operating system is an intermediary between users and computer hardware. It provides users an environment in which a user can execute programs conveniently and efficiently. Network operating system  (NOS) runs on a server and provides server the capability to manage data, users, groups, security, applications, and other networking functions. The primary purpose of the network operating system is to allow shared  file and printer access among multiple computers in a network. Examples of a networking operating systems are Microsoft Windows Server 2008, UNIX, Linux, NetWare etc.  Functions of NOS Monitoring the system and security, so as to provide security against  viruses, hackers, and data corruption. Enabling and managing  access to files on remote systems, and granting access to users. Granting access to remote applications and resources, such as the Internet. Providing access to remote devices such as printers, etc. Providing...

 What is Operating System? The Operating System (OS) is the most important program that runs on a computer. Computer being a machine cannot do anything on its own. It requires specific instructions on how to perform each and every task.  The user cannot communicate with the computer directly. Thus, you require an interface between the user and the hardware. The computer operating system acts like an interface. Operating system is the master program, which makes a PC alive and helps to run different applications. An  operating system is a program which acts as an interface between a user and the hardware . An operating system is an important component of a computer system which  controls all other components of the computer system. Operating system acts as a central coordinator between hardware and software. The operating system is classified into GUI and CUI, based on the way it interacts with the users. An Operating system encompasses all the operations like: ...

What is Computer Network, types, advantages and components of network? A computer Network is a group of computers and peripheral devices, connected through a data communication system. A computer network faciliates the sharing of hardware and  software resources among  different users working on different computers. A computer network is a  interconnection of geographically distributed multiple computers in such a way that meaningful transmission  and exchange of information become possible among them.  In easy terms, a computer network is a number of computers interconnected by one or more transmission paths. Advantages of Network The key advantages of networking are: Hardware Sharing Software Sharing Reduces Redundancy Saves Paper and Time Internet Sharing Security Do you know? Components of a Computer Network A network is a group of a computers connected together for the purpose of sharing data with one another. The various parts of computer network are as fo...

 What are the 5 generations of programming languages? A computer only understand binary language i.e., 0 and 1.  Programming languages are classified into two types: Low level languages and High level languages.  The first computer language developed by programmers was very complex. Nowadays, with the advancement in computer technology, the languages have also evolved. They have now  become similar to  English language and can be understood by us. Generation of  languages 1. First generation languages (1GLs): First generation languages are  called machine language. Machine language is a set of instructions written in binary form i.e. in a string of  0's and 1's. This language is very lengthy and complicated. The machine language is also different for every system. It is written only by experts as it requires much knowledge of the internal computer architecture which is different for different machine. As this language is very complex and understan...

 What is software? A computer software is a a collection of programs and procedures that instructs a computer how to perform different types of tasks.  In a simple language," a software is that which we cannot touch and feel" For example: In todays world we use alot of digital devices for example smart watch, Mobile phones, Digital cameras, Smart Tv etc. all of these are just like an empty box if there is no software iniside this. Software is that which we seen on our  computer screen, mobile screen etc. From calulator to every single app which you use on your devices all of these are softwares. A software enhances the capability of the hardware and directs the computer to perform  operations like Input, Processing and Output.  A software can be classified into two types: 1. Application Software 2. System Software Also read about input and output devices System-Software: It is a collection of one or more program, which are designed to control the overall operati...

  Input Devices Input refers to the data or instructions which we feed  into a computer. Input devices are used to enrer data and information into a computer. The input unit converts the incoming data and instructions into a pattern of binary codes which is understood by a computer. Then it further supplies data to the processor for processing. Some of the input devices are: 1. Keyboard:  Keyboard is the one of the most important devices used to input data and instructions into a computer. The standard computer  keyboards  typically contain 101  keys. There are mainly five types of keys on a keyboard: types of keys Keyboard 2. Mouse: Mouse is the most commonly used input and pointing device that lets you select  and move items on the screen. The left mouse button is used  more, frequently than the right button. A single left  click selects an item while double-clicking on an item activates the application. The right-click  often displays...