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Output Devices Quiz 15 (10 MCQs)

This set of multiple-choice questions evaluates understanding of output devices, including printer types, graphics cards, and display units. It covers concepts such as printer resolution (DPI), plotter classification, and the function of a Visual Display Unit (VDU). The questions assess the ability to distinguish between different types of cards, identify primary visual output, and understand the functionality of output devices in data production and visual feedback.

Quiz Instructions

Select an option to see the correct answer instantly.

1. An output device that lets you see what the computer is doing .....

Correct Answer: Correct answer is: (B) Monitor-screen.

Exam Relevance: Computer Science Exams, IT Certification Exams, Basic Computing Exams

Difficulty: Easy

Concept notes: An output device is a hardware component that allows users to see or hear the results of data processing. The monitor-screen is an output device that displays visual information from the computer.

Common Mistakes: A common misunderstanding is that a disk drive or printer could be the primary device for seeing what the computer is doing, but these are not primarily used for real-time visual feedback.

Explanations: The monitor-screen is the correct answer because it is the primary output device that allows users to see what the computer is doing in real-time. It displays the visual output of the computer's operations, such as text, images, and videos.

Option Analysis:

Option A: A disk drive is a storage device, not an output device. It does not display information for the user to see.
Option B: The monitor-screen is the correct output device that displays visual information from the computer.
Option C: The shift key is an input device, not an output device. It is used to input commands or characters into the computer.
Option D: A printer is an output device, but it is not used for real-time visual feedback. It prints text or images on paper.

2. An output device which draws by moving a pen. Useful for scale drawings and is used mainly with CAD packages.

Correct Answer: Correct answer is: (A) Plotter / Graph plotter.

Exam Relevance: ITIL, CompTIA A+, GCSE Computer Science

Difficulty: Easy

Concept notes: A plotter is an output device that draws by moving a pen. It is particularly useful for creating scale drawings and is commonly used with CAD (Computer-Aided Design) packages.

Common Mistakes: A common misunderstanding is that a plotter is similar to a regular printer. However, a plotter is specifically designed for drawing precise lines and curves, making it ideal for technical drawings and diagrams.

Explanations: A plotter is an output device that uses a pen to draw lines and curves on paper. It is particularly useful for creating scale drawings and is commonly used with CAD packages. This makes it distinct from other output devices like dot matrix printers or digital cameras, which do not have the capability to draw precise lines and curves.

Option Analysis:

Option A: Correct. A plotter is an output device that draws by moving a pen and is used mainly with CAD packages.
Option B: Incorrect. EPOS (Electronic Point of Sale) is a system used in retail for processing transactions, not for drawing.
Option C: Incorrect. A dot matrix printer prints by striking an ink-soaked cloth ribbon against the paper, not by drawing with a pen.
Option D: Incorrect. A digital camera captures images, not for drawing purposes.

3. Plotter can be divided into ..... types.

Correct Answer: Correct answer is: (C) Two.

Exam Relevance: Computer Science Exams, IT Certification Exams, Engineering Exams

Difficulty: Easy

Concept notes: Plotter devices are typically categorized into two main types: flatbed plotters and drum plotters.

Common Mistakes: A common misunderstanding is that there are more than two types of plotters, such as six or four, which can lead to confusion.

Explanations: Plotter devices are primarily divided into two types: flatbed plotters and drum plotters. Flatbed plotters have a stationary platform where the paper is placed, and the plotter head moves over it. Drum plotters, on the other hand, have a cylindrical drum that rotates while the plotter head moves along the drum. This division into two types is based on the fundamental design and operation of the plotter.

Option Analysis:

Option A: Incorrect, as there are not six types of plotters.
Option B: Incorrect, as there are not four types of plotters.
Option C: Correct, as plotters are divided into two main types: flatbed and drum plotters.
Option D: Incorrect, as not all the above options are correct.

Mnemonic: Flatbed and Drum, Two Types of Plotters.

4. A dot-matrix printer

Correct Answer: Correct answer is: (B) Is an output device.

Exam Relevance: Computer Science Exams, IT Certification Exams, Basic Computing Exams

Difficulty: Easy

Concept notes: A dot-matrix printer is a type of printer that produces images by striking pins against an ink ribbon to transfer ink onto the paper. It is used to produce printed output, making it an output device.

Common Mistakes: A common misunderstanding is that a dot-matrix printer might be an input device, which is incorrect. Input devices are used to input data into a computer, whereas output devices are used to produce data from a computer.

Explanations: A dot-matrix printer is designed to produce printed output, which makes it an output device. It does not input data into a computer, so it cannot be classified as an input device. The other options are incorrect because dot-matrix printers can print alphabets and their speed is typically much lower than 1000 cps.

Option Analysis:

Option A: A dot-matrix printer is not an input device; it is used for output.
Option B: A dot-matrix printer is an output device as it produces printed output.
Option C: A dot-matrix printer can print alphabets and other characters.
Option D: The speed of a dot-matrix printer is generally much lower than 1000 cps.

5. Produces data

Correct Answer: Correct answer is: (C) Output.

Exam Relevance: Computer Science Exams, IT Certification Exams, Basic Computing Exams

Difficulty: Easy

Concept notes: Output devices are hardware components that produce data in a form that can be perceived by humans, such as visual or audio output.

Common Mistakes: A common misunderstanding is that hardware or software directly produces data, but it is the output devices that present the data in a usable form.

Explanations: Output devices are responsible for producing data in a form that can be perceived by users, such as displaying text on a monitor or playing sound through speakers. This makes "Output" the correct answer as it directly relates to the function of output devices.

Option Analysis:

Option A: Hardware refers to the physical components of a computer system, not specifically to the production of data.
Option B: Input refers to the process of entering data into a computer system, not producing data.
Option C: Output devices produce data in a form that can be perceived by users, such as visual or audio output.
Option D: Software refers to the programs and applications that run on a computer, not the production of data.

6. The card attached to the motherboard allows pictures and text to appear. It controls the output to a display screen

Correct Answer: Correct answer is: (A) Graphics Card.

Exam Relevance: CompTIA A+, CCNA, ITIL Foundation

Difficulty: Easy

Concept notes: The graphics card, also known as a video card, is responsible for processing and rendering images, videos, and text to be displayed on a monitor or other display device.

Common Mistakes: A common mistake is confusing the graphics card with other types of cards, such as the network card or sound card, which have different functions.

Explanations: The graphics card is the component that controls the output to a display screen. It processes the visual data and sends it to the monitor, allowing pictures and text to appear on the screen. The other options, such as the Ethernet cord, network card, and sound card, do not control the display output.

Option Analysis:

Option A: Correct. The graphics card is responsible for controlling the output to a display screen.
Option B: Incorrect. The Ethernet cord is used for connecting to a network and does not control display output.
Option C: Incorrect. The network card is used for network communication and does not control display output.
Option D: Incorrect. The sound card is responsible for audio output and does not control display output.

7. The work done by a computer operator is displayed in which part of computer?

Correct Answer: Correct answer is: (A) VDU.

Exam Relevance: Computer Science Exams, IT Certification Exams, Basic Computing Exams

Difficulty: Easy

Concept notes: The work done by a computer operator is displayed on the Visual Display Unit (VDU), which is an output device.

Common Mistakes: A common misunderstanding is that the ALU (Arithmetic Logic Unit) is responsible for displaying the work done by the operator. However, the ALU is a part of the CPU and is responsible for processing data, not displaying it.

Explanations: The Visual Display Unit (VDU) is an output device that displays the work done by a computer operator. It is the primary means through which the operator interacts with the computer and views the results of their actions. The ALU, on the other hand, is part of the CPU and is responsible for performing arithmetic and logical operations, not for displaying information.

Option Analysis:

Option A: Correct. The VDU is the output device that displays the work done by the operator.
Option B: Incorrect. The ALU is part of the CPU and performs calculations, not display functions.
Option C: Incorrect. The VDU is the correct output device for displaying the work done by the operator.
Option D: Incorrect. The VDU is the only correct option among the choices provided.

Mnemonic: VDU: View Display Unit

8. Printer resolutions are measured in

Correct Answer: Correct answer is: (B) Dots per inch.

Exam Relevance: Computer Science Exams, IT Certification Exams, Basic Computing Exams

Difficulty: Easy

Concept notes: Printer resolution is a measure of the sharpness and clarity of the printed image. It is typically expressed in dots per inch (DPI), which indicates the number of dots a printer can produce in a linear inch.

Common Mistakes: A common misunderstanding is that printer resolution might be measured in bits per inch or dots per centimeter, but the standard unit is dots per inch (DPI).

Explanations: Printer resolution is measured in dots per inch (DPI). This unit indicates the number of dots a printer can place in a linear inch, which directly affects the quality and clarity of the printed image. The higher the DPI, the finer the detail and the sharper the image.

Option Analysis:

Option A: Bits per inch is not a standard unit for measuring printer resolution.
Option B: Dots per inch (DPI) is the correct unit for measuring printer resolution.
Option C: Dots per centimeter is not the standard unit for measuring printer resolution in the context of output devices.
Option D: This option is incorrect as dots per inch (DPI) is a valid and commonly used unit for measuring printer resolution.

9. Another word for a daisy wheel printer

Correct Answer: Correct answer is: (B) Golf ball printer.

Exam Relevance: ITIL, CompTIA A+, CCNA

Difficulty: Easy

Concept notes: A daisy wheel printer is a type of impact printer that uses a wheel with characters molded on its petals. The term "golf ball printer" is a colloquial name for this type of printer because the wheel resembles a golf ball with protruding characters.

Common Mistakes: A common misunderstanding is that a daisy wheel printer is the same as a laser printer or a line printer, which are different types of output devices.

Explanations: A daisy wheel printer uses a wheel with characters molded on its petals, which is why it is also called a "golf ball printer." This term is derived from the visual similarity of the wheel to a golf ball with protruding characters. The other options do not accurately describe a daisy wheel printer.

Option Analysis:

Option A: "Petal printer" is not a standard term for a daisy wheel printer.
Option B: "Golf ball printer" is a colloquial term for a daisy wheel printer.
Option C: "Laser printer" is a different type of printer that uses laser technology, not a daisy wheel.
Option D: "Line printer" is a different type of printer that prints one line at a time, not a daisy wheel.

Mnemonic: Daisy Wheel = Golf Ball

10. Alexander needs to prepare the transcript for an audio file saved on his office computer. He wants to listen to the audio without disturbing his colleagues sitting nearby. Which of the following hardware devices will Alexander use?

Correct Answer: Correct answer is: (A) Headphone.

Exam Relevance: IT certifications, Computer Science exams, Information Technology exams

Difficulty: Easy

Concept notes: Headphones are output devices that allow sound to be heard privately, without disturbing others nearby.

Common Mistakes: A common mistake could be choosing a speaker, as speakers produce sound that can be heard by others in the vicinity.

Explanations: Headphones are the appropriate choice for Alexander because they allow him to listen to the audio file privately without disturbing his colleagues. Headphones are designed to deliver sound directly to the listener's ears, ensuring that the audio is contained and not audible to others.

Option Analysis:

Option A: Headphones are the correct choice as they allow private listening.
Option B: Speakers would be audible to others in the office, which is not ideal for Alexander's situation.
Option C: A microphone is an input device used to capture sound, not to listen to it.
Option D: A web cam is used for video capture and is not related to audio output.

Frequently Asked Questions

What is an output device?

An output device is any hardware component that converts processed data from a computer into a form that can be understood by humans, such as visual or audio output.

What is the difference between a dot-matrix printer and a daisy wheel printer?

A dot-matrix printer uses a matrix of pins to create characters and images, while a daisy wheel printer uses a wheel with character molds that strike the paper to form text.

How does DPI relate to printer resolution?

DPI, or dots per inch, is a measure of printer resolution that indicates the number of dots a printer can produce in a linear inch, affecting the clarity and detail of printed output.

What is the role of a graphics card in a computer?

A graphics card, also known as a video card, processes and renders images, video, and animations for display on a monitor, enhancing the visual output of a computer.

What are the different types of plotters?

Plotter types include drum plotters, which use a cylindrical drum to move paper, and flatbed plotters, which move the print head over a stationary piece of paper to create large-scale drawings.

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