fundamental & concepts of computer Practice Questions Answers Test with Solutions & More Shortcuts

Answer: (e)

Every computer has an operating system, Application programs may also have.

Examples of applications include word processors, database programs, web browsers, development tools, image editors and communication platforms. Applications use the computer's operating system (OS) and other supporting programs, typically system software, to function.

In information technology, an application is a computer program designed to help people perform an activity. An application thus differs from an operating system (which runs a computer), a utility (which performs maintenance or general-purpose chores), and a programming tool.

Answer: (c)

An input device is any hardware component that allows users to enter data and instructions into a computer.

Answer: (b)

Mainframe Computer is a large and expensive computer which is capable of simultaneously processing data for hundreds or thousands of users.

Answer: (a)

Computer use at supermarkets, departmental stores and restaurants etc. is called P-O-S terminal.

Answer: (c)

A computer or array of computers that act as one collective machine capable of processing enormous amounts of data. Supercomputers are used for very complex jobs such as nuclear research or forecasting weather patterns.

The size of a supercomputer can differ widely, depending on how many computers make up the supercomputer. A supercomputer could be made up of 10, 100, 1000, or more computers, all working together. As of 2016, the largest supercomputer is the Sunway TaihuLight in China. It consists of 40,960 RISC processors, each with 256 cores, totalling 10,649,600 cores. The Sunway TaihuLight is capable of 93 petaflops of processing power and uses a custom operating system called Sunway RaiseOS.