Information and Communication Technology MCQ

91. Which of the following communication medium requires "line-of-sight"?

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

Exam Relevance: GATE, ECE, EE, CE

Difficulty: Easy

Concept notes: Microwave communication requires a direct line-of-sight between the transmitting and receiving antennas because microwaves travel in straight lines and cannot bend around obstacles.

Common Mistakes: Students may mistakenly believe that all wireless communication requires line-of-sight, but only certain types like microwave do.

Explanations: Microwaves travel in straight lines and cannot penetrate solid objects or bend around obstacles. Therefore, a clear line-of-sight is necessary for effective microwave communication. Other options like fiber-optic, twisted-pair, and coaxial cables do not require line-of-sight as they use physical media to transmit signals.

Option Analysis:

Option A: Microwave communication requires line-of-sight because microwaves travel in straight lines and cannot bend around obstacles.
Option B: Fiber-optic cable uses light to transmit data through a physical medium and does not require line-of-sight.
Option C: Twisted-pair cable uses copper wires to transmit data and does not require line-of-sight.
Option D: Coaxial cable uses a copper core surrounded by insulation and a braided shield to transmit data and does not require line-of-sight.

Mnemonic: Line-of-Sight: "M" for Microwave, "M" for Must See.

92. In Excel the following is not a basic step in creating a worksheet

Correct Answer: Correct answer is: (D) Copy the worksheet.

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

Difficulty: Easy

Concept notes: Creating a worksheet in Excel involves basic steps such as entering text and data, modifying the worksheet, and saving the workbook. Copying a worksheet is not a basic step but rather an advanced feature used for duplicating content.

Common Mistakes: Students may confuse copying a worksheet with the basic steps of creating one, as copying can be a useful function but is not essential for initial creation.

Explanations: The basic steps in creating a worksheet in Excel include entering text and data, modifying the worksheet to suit your needs, and saving the workbook to preserve your work. Copying a worksheet is an additional feature that allows you to duplicate the content of a worksheet, but it is not a fundamental step in the initial creation process.

Option Analysis:

Option A: Saving the workbook is a basic step to ensure your work is not lost.
Option B: Modifying the worksheet is a basic step to customize the content.
Option C: Entering text and data is a basic step to populate the worksheet.
Option D: Copying the worksheet is not a basic step but an advanced feature for duplicating content.

93. What is the purpose of validation?

Correct Answer: Correct answer is: (A) To ensure that data entered is sensible and possible.

Exam Relevance: AP Computer Science, IB Computer Science, A-Level Computing

Difficulty: Easy

Concept notes: Validation checks ensure that the data entered into a system is logical and feasible.

Common Mistakes: Students may confuse validation with verification, which checks the correctness of data.

Explanations: Validation is the process of ensuring that data entered into a system is sensible and possible. This means that the data should be within acceptable ranges and should make logical sense in the context of the system. For example, a date of birth should not be in the future, and a numeric field should not contain letters. This is different from verification, which checks the correctness of the data.

Option Analysis:

Option A: Correct. Validation ensures that data is sensible and possible.
Option B: Incorrect. Verification, not validation, ensures that data is correct.
Option C: Incorrect. Ensuring that the programmer has met all requirements is not the purpose of validation.
Option D: Incorrect. This is not the correct answer as validation does have a specific purpose.

94. The code for representing binary as letters and numbers is called

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

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

Difficulty: Easy

Concept notes: ASCII stands for American Standard Code for Information Interchange. It is a character encoding standard that assigns unique binary codes to letters, numbers, and other characters.

Common Mistakes: Students may confuse ASCII with other encoding systems like Unicode or think that SQL is related to character encoding.

Explanations: ASCII is the correct answer because it is the standard code used to represent letters, numbers, and other characters in binary form. SQL is a language for managing and querying databases, DECIMAL is a number system, and ALPHABET refers to a set of letters used in a language, not a binary encoding system.

Option Analysis:

Option A: SQL is a language for managing and querying databases, not a binary encoding system.
Option B: ASCII is the correct encoding system for representing letters and numbers in binary form.
Option C: DECIMAL is a number system, not a binary encoding system for letters and numbers.
Option D: ALPHABET refers to a set of letters used in a language, not a binary encoding system.

Mnemonic: ASCII - American Standard Code for Information Interchange

95. Undo is similar to

Correct Answer: Correct answer is: (B) Ctrl+Z.

Exam Relevance: SAT, ACT, GED

Difficulty: Easy

Concept notes: The undo function in most software applications allows users to reverse the last action performed. The keyboard shortcut for undo is typically Ctrl+Z.

Common Mistakes: Students may confuse the undo function with other common keyboard shortcuts like cut (Ctrl+X) or copy (Ctrl+C).

Explanations: The undo function is designed to reverse the most recent action, which is commonly accessed using the keyboard shortcut Ctrl+Z. This function is widely used in various software applications to revert changes made by the user.

Option Analysis:

Option A: Ctrl+X is the shortcut for cut, not undo.
Option B: Ctrl+Z is the correct shortcut for undo.
Option C: Ctrl+U is not a standard shortcut for undo in most applications.
Option D: Ctrl+C is the shortcut for copy, not undo.

Mnemonic: Undo, Z for "Zap" the last action.

96. One of the popular mass storage device is CD ROM. What does CD ROM stand for?

Correct Answer: Correct answer is: (D) Compact Disk Read Only Memory.

Exam Relevance: SAT, ACT, AP Computer Science Principles

Difficulty: Very Easy

Concept notes: CD ROM stands for Compact Disk Read Only Memory. It is a type of optical disc used to store digital data.

Common Mistakes: Students may confuse the term with other storage devices or misinterpret the acronym.

Explanations: CD ROM stands for Compact Disk Read Only Memory. The term "Compact Disk" refers to the physical medium, which is a disc that can store digital data. "Read Only Memory" indicates that the data on the disc can be read but not modified or written to once it is created.

Option Analysis:

Option A: Incorrect, as "Compactable" is not a valid term in this context.
Option B: Incorrect, as "Compact Data" is not the correct term for the medium.
Option C: Incorrect, as "Compactable Disk" is not a valid term.
Option D: Correct, as it accurately describes the acronym CD ROM.

97. .....controls all the main slide control tasks for your presentation.

Correct Answer: Correct answer is: (A) Task Pane.

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

Difficulty: Easy

Concept notes: The Task Pane in presentation software, such as Microsoft PowerPoint, provides a centralized location for managing and controlling various aspects of a presentation, including slide transitions, animations, and other slide-related tasks.

Common Mistakes: Students may confuse the Task Pane with the Task Bar, which is a part of the operating system and not specific to presentation software.

Explanations: The Task Pane is a feature in presentation software that allows users to control and manage various aspects of their slides, such as transitions, animations, and other slide-related tasks. It is a dedicated interface within the software that provides easy access to these controls, making it the correct answer for the question.

Option Analysis:

Option A: Correct. The Task Pane controls all the main slide control tasks for your presentation.
Option B: Incorrect. The Task Bar is part of the operating system and does not control slide tasks.
Option C: Incorrect. The Control Panel is used for system settings and not for controlling presentation slides.
Option D: Incorrect. The correct answer is provided in the options.

98. What kind of software would you most likely use to keep track of billing account?

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

Exam Relevance: SAT, ACT, AP Computer Science Principles

Difficulty: Easy

Concept notes: Spreadsheets are ideal for organizing and managing numerical data, such as billing accounts.

Common Mistakes: Students might confuse word processing or web authoring software with spreadsheet software, as they are all computer applications.

Explanations: Spreadsheets are designed to handle numerical data and perform calculations, making them suitable for tracking billing accounts. They allow for easy organization, sorting, and analysis of financial information.

Option Analysis:

Option A: Word processing software is primarily used for creating and editing documents, not for managing numerical data.
Option B: Electronic publishing software is used for creating and distributing digital publications, not for managing financial data.
Option C: Spreadsheet software is designed for managing numerical data and performing calculations, making it the best choice for tracking billing accounts.
Option D: Web authoring software is used for creating and editing web pages, not for managing financial data.

99. The range of frequencies available for data transmission is known as

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

Exam Relevance: Networking exams, Telecommunications exams, Computer Science exams

Difficulty: Easy

Concept notes: Bandwidth refers to the range of frequencies available for data transmission in a communication channel.

Common Mistakes: Students may confuse bandwidth with baud rate, which is the number of signal units transmitted per second.

Explanations: Bandwidth is the range of frequencies available for data transmission. It is a fundamental concept in telecommunications and data transmission, defining the capacity of a channel to carry information. The other options do not relate to frequency ranges: baud refers to the rate of signal changes, byte is a unit of digital information, and bits are the basic units of data.

Option Analysis:

Option A: Baud is the rate at which information is transmitted over a communication channel, not a frequency range.
Option B: Bandwidth is the correct term for the range of frequencies available for data transmission.
Option C: Byte is a unit of digital information, typically consisting of 8 bits, and is unrelated to frequency ranges.
Option D: Bits are the basic units of data, not a measure of frequency range.

100. Speech recognition is

Correct Answer: Correct answer is: (A) Ability to input data directly into a computer system by speaking to it.

Exam Relevance: GRE, GMAT, TOEFL, IELTS

Difficulty: Easy

Concept notes: Speech recognition technology allows users to input data into a computer system through spoken commands or words.

Common Mistakes: Students may confuse speech recognition with speech synthesis, which is the process of converting text to speech.

Explanations: Speech recognition is the process of converting spoken words into text or commands that a computer can understand and act upon. This technology enables users to interact with computers by speaking, thereby inputting data directly into the system. The other options are incorrect because they either describe output processes or are too vague to be specific to speech recognition.

Option Analysis:

Option A: Correct. Speech recognition allows users to input data into a computer system by speaking.
Option B: Incorrect. This describes speech synthesis, not speech recognition.
Option C: Incorrect. This is too broad and does not specifically describe the input function of speech recognition.
Option D: Incorrect. The correct answer is provided in option A.

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3 thoughts on “Information and Communication Technology MCQ - Set 10”

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 10”

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