Answer: Option D. -> server
Answer: (d)
A server is a computer program or device that provides a service to another computer program and its user, also known as the client. In a data centre, the physical computer that a server program runs on is also frequently referred to as a server.

Answer: Option C. -> network
Answer: (c)
Personal Computers can be connected together to form a Network.
A computer network is a set of computers connected together for the purpose of sharing resources. The most common resource shared today is a connection to the Internet. Other shared resources can include a printer or a file server.
A network is defined as a group of two or more computer systems linked together. There are many types of computer networks, including the following: local-area networks (LANs): The computers are geographically close together.

Answer: Option E. -> PDA
Answer: (e)
Personal Digital Assistants (PDAs) are small networked computers that can fit in the palm of your hand. PDAs have evolved over the years, beginning with first-generation devices such as the Apple Newton (Apple coined the term “PDA”) and Palm Pilot. They offered features such as a calendar and note-taking capability.

Answer: Option E. -> operating system; application programs
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: Option C. -> Input
Answer: (c)
An input device is any hardware component that allows users to enter data and instructions into a computer.

Answer: Option A. -> P-O-S
Answer: (a)
Computer use at supermarkets, departmental stores and restaurants etc. is called P-O-S terminal.

Answer: Option C. -> contain thousands of microprocessors
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.

Answer: Option B. -> mainframe 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: Option D. -> Analysing data or information
Answer: (d)
Analyzing the data or information is NOT one of the four major data processing functions of a computer.

Answer: Option E. -> notebook computer
Answer: (e)
A notebook computer is a personal computer designed to be easily portable and capable of being run on batteries and electrical current if needed.