Question 1

Which of the following is classified as an INPUT device?

Accepted Answer

A keyboard is used to input data/commands into the computer, whereas monitor, printer, and speaker are output devices.

Question 2

What is the primary function of a mouse in a computer system?

Accepted Answer

A mouse is an input device used to move a cursor and select objects on the screen; other options describe different device functions.

Question 3

Which device is used to convert digital computer output into printed documents?

Accepted Answer

A printer is an output device that converts digital data into physical printed documents on paper.

Question 4

A barcode scanner used at retail stores is classified as which type of device?

Accepted Answer

A barcode scanner reads and inputs barcode information into the computer system, making it an input device.

Question 5

Which of the following devices outputs data in audio format?

Accepted Answer

Speakers are output devices that convert digital audio signals into sound; microphone is an input device.

Question 6

A touchscreen on an ATM machine functions as which type of device?

Accepted Answer

A touchscreen both receives input (touch commands) from users and displays output (information/images), making it both an input and output device.

Question 7

Which of the following is a primary input device used to enter data into a computer?

Accepted Answer

Keyboard is a standard input device that allows users to enter text and commands into a computer.

Question 8

A scanner is classified as which type of device?

Accepted Answer

A scanner is an input device that converts physical documents or images into digital data for computer processing.

Question 9

Which output device is used to produce printed copies of digital documents on paper?

Accepted Answer

A printer is the standard output device that converts digital data into physical printed documents on paper.

Question 10

What is the primary function of a touchscreen in modern devices?

Accepted Answer

A touchscreen functions as both an input device (accepting touch commands) and an output device (displaying visual information).

Question 11

Which of the following is NOT an input device?

Accepted Answer

A speaker is an output device that produces sound, whereas mouse, microphone, and joystick are input devices.

Question 12

A webcam connected to a computer serves which primary purpose?

Accepted Answer

A webcam is an input device that captures video and images and sends this data to the computer for processing or storage.

Question 13

Which output device is specifically designed to produce large-scale technical drawings and graphics?

Accepted Answer

A plotter is an output device designed to produce large, precise technical drawings, blueprints, and graphics on wide paper formats.

Question 14

A barcode scanner is connected to a Point of Sale (POS) system in a retail store. Which category of device does this barcode scanner represent, and what is its primary function in data entry?

Accepted Answer

A barcode scanner is an input device that reads and converts optical barcode patterns into digital signals the computer can process.

Question 15

In a military office setup, a multifunction printer is used for both document output and document scanning. If the scanning component malfunctions but printing still works, which specific input/output subsystem has failed?

Accepted Answer

The scanner is the input device component of the multifunction printer; its failure means documents cannot be read and converted to digital format, while printing (output) remains functional.

NDA Input & Output Devices

Input & Output Devices — Practice Questions