Information and Communication Technology MCQ

241. By programmable machine we mean

Correct Answer: Correct answer is: (D) Anything that can be set to perform different tasks with suitable programs.

Exam Relevance: GRE, GMAT, Competitive Programming Exams

Difficulty: Moderate

Concept notes: A programmable machine is a device that can be configured to perform various tasks based on the input of different programs.

Common Mistakes: Students may mistakenly believe that only computers are programmable machines, overlooking other devices that can be programmed to perform different tasks.

Explanations: The correct answer is that a programmable machine is any device that can be set to perform different tasks with suitable programs. This definition encompasses a wide range of devices, including computers, washing machines, and modern televisions, as long as they can be programmed to perform different functions. The key aspect is the ability to change the machine's behavior through programming, not the specific type of device.

Option Analysis:

Option A: Computers are indeed programmable machines, but they are not the only type of programmable machines.
Option B: Modern televisions can be programmable, but they are not the only type of programmable machines.
Option C: Washing machines can be programmable, but they are not the only type of programmable machines.
Option D: This option correctly defines a programmable machine as any device that can be set to perform different tasks with suitable programs.

Mnemonic: Programmable = Any Device, Programmed Tasks

242. In digital computer, data is represented in

Correct Answer: Correct answer is: (C) Binary form.

Exam Relevance: Computer Science, Electrical Engineering, Information Technology

Difficulty: Easy

Concept notes: In digital computers, data is represented in binary form because computers use binary digits (bits) to process and store information.

Common Mistakes: Students may mistakenly believe that data is represented in hexadecimal or octal form, which are used for human readability but not for internal processing.

Explanations: Digital computers use binary form because it is the simplest and most efficient way to represent data using electronic signals. Binary digits (0 and 1) correspond directly to the two states of a transistor (off and on), making it ideal for computer hardware. While hexadecimal and octal forms are used for human convenience, they are not the native form used by computers for processing and storage.

Option Analysis:

Option A: Octal form is not used by computers for internal data representation, although it can be used for human convenience.
Option B: Hexadecimal form is also not used by computers for internal data representation, although it is used for human convenience.
Option C: Binary form is the correct answer because it is the native form used by computers for processing and storage.
Option D: Numerical form is too vague and does not specify the base used, which is critical for digital computers.

243. ..... is a pre-designed model that you can apply to one or all of the background slides in a presentation.

Correct Answer: Correct answer is: (B) Design Template.

Exam Relevance: Microsoft Office Specialist, Google Workspace Certification

Difficulty: Easy

Concept notes: A design template is a pre-designed model that can be applied to the background slides in a presentation to maintain a consistent look and feel.

Common Mistakes: Students may confuse a design template with placeholders, which are areas reserved for content such as text or images.

Explanations: A design template is a pre-designed model that you can apply to one or all of the background slides in a presentation. This ensures a consistent and professional appearance throughout the presentation. Placeholders, on the other hand, are areas within the slides where content can be inserted, but they do not provide a pre-designed background or theme.

Option Analysis:

Option A: Placeholders are areas within slides where content can be inserted, not pre-designed models for backgrounds.
Option B: Design templates are pre-designed models that can be applied to background slides to maintain consistency.
Option C: This option is incorrect as a design template is the correct answer.
Option D: This option is incorrect as it includes all the above, which is not true.

Mnemonic: Design Template = D for Design, T for Template

244. Approximately how many bytes make one Megabyte?

Correct Answer: Correct answer is: (A) One Million.

Exam Relevance: SAT, ACT, AP Computer Science Principles

Difficulty: Easy

Concept notes: A Megabyte is a unit of digital information that is equal to one million (1,000,000) bytes.

Common Mistakes: Students often confuse the exact number of bytes in a Megabyte, sometimes thinking it is 1,000 or 10,000 bytes.

Explanations: A Megabyte is defined as 1,000,000 bytes. This is a standard unit of measurement in computing and digital storage. The prefix "Mega-" in the metric system denotes a factor of one million.

Option Analysis:

Option A: Correct. One Megabyte is equal to one million bytes.
Option B: Incorrect. One thousand bytes is a Kilobyte, not a Megabyte.
Option C: Incorrect. Ten thousand bytes is not a standard unit of measurement in digital storage.
Option D: Incorrect. One hundred bytes is not a standard unit of measurement in digital storage.

Mnemonic: Mega means Million, think "Mega Millions" for memory.

245. What is the purpose of a file extension?

Correct Answer: Correct answer is: (B) It identifies the file type.

Exam Relevance: AP Computer Science Principles, SAT Subject Test in Computer Science

Difficulty: Easy

Concept notes: File extensions are used to indicate the type of file, which helps the operating system and applications to recognize and open the file correctly.

Common Mistakes: Students may mistakenly believe that file extensions are used to make files visible or prevent overwriting, which are not their primary functions.

Explanations: File extensions are suffixes added to the end of a file name, typically separated by a period. They provide a way to identify the file type, such as .txt for text files, .jpg for JPEG images, and .docx for Word documents. This information is crucial for the operating system to determine which application should be used to open the file. The other options do not accurately describe the primary purpose of file extensions.

Option Analysis:

Option A: File extensions do not make files visible; they are already visible in the file system.
Option B: Correct. File extensions identify the file type, which is essential for the operating system to determine the appropriate application to open the file.
Option C: File extensions do not prevent files from being overwritten; file management systems handle this.
Option D: File extensions do not ensure each file has a unique file number; file names and paths ensure uniqueness.

246. What is the full form of UPS?

Correct Answer: Correct answer is: (A) Uninterruptible power supply.

Exam Relevance: GATE, GRE, GMAT, JE (Junior Engineer)

Difficulty: Very Easy

Concept notes: UPS stands for Uninterruptible Power Supply, which is a device that provides emergency power to a load when the input power source, typically the utility mains, fails.

Common Mistakes: Students may confuse UPS with other power-related acronyms, such as UPS (United Parcel Service) or UPS (Universal Power Supply).

Explanations: The correct answer is Uninterruptible Power Supply because UPS is a device designed to provide continuous power to a load in the event of a power failure. It ensures that the connected devices continue to operate without interruption.

Option Analysis:

Option A: Correct. UPS stands for Uninterruptible Power Supply.
Option B: Incorrect. UPS does not stand for Universal Power Supply.
Option C: Incorrect. UPS does not stand for Unless Power Supply.
Option D: Incorrect. The correct answer is provided in Option A.

Mnemonic: UPS: Uninterruptible Power Supply

247. The 7-bit ASCII code widely used

Correct Answer: Correct answer is: (A) For data communication work.

Exam Relevance: Computer Science, Information Technology, Networking

Difficulty: Easy

Concept notes: The 7-bit ASCII code is widely used for data communication work because it provides a standardized method for representing text in digital form, which is essential for transmitting data between different systems.

Common Mistakes: Students may mistakenly believe that the 7-bit ASCII code is primarily used for internal memory coding or specific to IBM mainframe models.

Explanations: The 7-bit ASCII code is a standard encoding system that uses 7 bits to represent 128 possible characters, including letters, numbers, and special characters. This standardization is crucial for data communication, as it ensures that text can be accurately transmitted and interpreted across different devices and systems. The other options are incorrect because the 7-bit ASCII code is not specifically designed for IBM mainframe models, external memory coding, or large machines produced by non-IBM vendors.

Option Analysis:

Option A: Correct. The 7-bit ASCII code is widely used for data communication work.
Option B: Incorrect. The 7-bit ASCII code is not specific to IBM mainframe models.
Option C: Incorrect. The 7-bit ASCII code is not primarily used for coding external memory.
Option D: Incorrect. The 7-bit ASCII code is not specific to large machines produced by non-IBM vendors.

Mnemonic: ASCII for Communication, Not IBM

248. A.....is a collection of data that is stored electronically as a series of records in a table.

Correct Answer: Correct answer is: (B) Database.

Exam Relevance: SAT, ACT, AP Computer Science Principles

Difficulty: Easy

Concept notes: A database is a structured collection of data that is stored electronically and organized into records and tables.

Common Mistakes: Students may confuse a database with a web page or presentation, which are not structured collections of data.

Explanations: A database is designed to store and manage data in a structured format, typically organized into tables with rows and columns. This makes it distinct from a presentation or a web page, which are used for displaying information rather than storing it in a structured manner.

Option Analysis:

Option A: A presentation is a visual display of information, not a structured data storage system.
Option B: A database is a structured collection of data stored electronically, fitting the description given.
Option C: A web page is a document on the internet, not a structured data storage system.
Option D: None of these is incorrect as a database is the correct answer.

249. Which of the following is a handy tool that allows you to create a presentation quickly?

Correct Answer: Correct answer is: (B) AutoContent Wizard.

Exam Relevance: Microsoft Office Specialist, High School Computer Science Exams

Difficulty: Easy

Concept notes: The AutoContent Wizard is a feature in Microsoft PowerPoint that helps users quickly create presentations by providing pre-designed content and layouts.

Common Mistakes: Students may confuse the AutoContent Wizard with other PowerPoint features like Animations, which are used to add visual effects to slides rather than to create content.

Explanations: The AutoContent Wizard is specifically designed to assist in the rapid creation of presentations by offering pre-made content and layout options. This makes it a handy tool for users who need to create presentations quickly without starting from scratch.

Option Analysis:

Option A: Animations are used to add visual effects to slides, not to create content quickly.
Option B: The AutoContent Wizard is a feature that allows users to create presentations quickly by providing pre-designed content and layouts.
Option C: Not all options are correct; only the AutoContent Wizard fits the description.
Option D: This is incorrect as the AutoContent Wizard is a valid and useful tool for quick presentation creation.

250. Video, sound, and network cards are all examples of .....

Correct Answer: Correct answer is: (A) Adapter cards.

Exam Relevance: AP Computer Science Principles, A+ Certification, CompTIA A+

Difficulty: Easy

Concept notes: Adapter cards are expansion cards that add specific functionality to a computer, such as video, sound, or network capabilities.

Common Mistakes: Students may confuse adapter cards with peripherals, which are external devices that connect to a computer.

Explanations: Video, sound, and network cards are all types of adapter cards. These cards are installed inside a computer to enhance its capabilities. They are not external devices like hard disks, peripherals, or external drives.

Option Analysis:

Option A: Correct. Adapter cards are internal expansion cards that provide specific functions like video, sound, and networking.
Option B: Incorrect. Hard disks are storage devices, not expansion cards.
Option C: Incorrect. Peripherals are external devices, not internal expansion cards.
Option D: Incorrect. External drives are storage devices, not expansion cards.

Mnemonic: VSN-A: Video, Sound, Network - Adapter

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3 thoughts on “Information and Communication Technology MCQ - Set 25”

Peter Ross April 8, 2020

The MCQ is quite entertaining and will help in increasing knowledge also.
Reyaz Ahmad khan December 26, 2020

plz help me in regard with current Affairs
Eshita Nandpal April 11, 2021

Plz give make a part of unit wise

3 thoughts on “Information and Communication Technology MCQ - Set 25”

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