Information and Communication Technology MCQ

801. What is the purpose of an operating system?

Correct Answer: Correct answer is: (C) Manage all hardware & software on computer.

Exam Relevance: CSCE 110, COMP 101, OS Fundamentals Exam

Difficulty: Moderate

Concept notes: An operating system (OS) is a critical software that manages both hardware and software resources of a computer system.

Common Mistakes: Students often mistakenly believe that an operating system only manages software or only manages hardware, but it is essential to understand that it handles both.

Explanations: An operating system (OS) is responsible for managing all hardware and software resources of a computer. It acts as a bridge between the hardware and software, providing essential services to applications and managing the computer's resources efficiently. The OS controls the allocation of memory, manages input and output operations, and coordinates the use of the CPU. It also provides a user interface and manages file systems, ensuring that all software can interact with the hardware effectively.

Option Analysis:

Option A: This is incorrect because the OS does more than just manage software; it also manages hardware resources.
Option B: This is incorrect because the OS does more than just manage hardware; it also manages software resources.
Option C: This is correct because the OS manages both hardware and software resources, providing a comprehensive system management solution.
Option D: This is incorrect because the OS does indeed manage both hardware and software resources.

802. Which of the following is TRUE regarding data compression?

Correct Answer: Correct answer is: (D) There are trade-offs involved in choosing a compression technique for storing and transmitting data.

Exam Relevance: Computer Science, Information Technology, Data Management

Difficulty: Moderate

Concept notes: Data compression techniques involve balancing between compression ratio, speed, and the ability to decompress the data accurately. Different techniques are suited for different types of data and use cases.

Common Mistakes: Students may mistakenly believe that all compression techniques are equally effective for all types of data, or that compression always results in a significant reduction in file size.

Explanations: Data compression techniques vary in their effectiveness and efficiency. Some methods may offer higher compression ratios but require more processing power to compress and decompress the data. Others may be faster but offer less compression. Therefore, choosing a compression technique involves trade-offs between compression ratio, speed, and resource usage. This makes option D the correct answer.

Option Analysis:

Option A: Data compression is useful for various purposes, not just for files being transmitted over the Internet. It can also be used for storage optimization.
Option B: Most compression techniques allow for the restoration of the original data, though some lossy methods may not perfectly restore the original file.
Option C: Compression does not inherently provide security; it is primarily for reducing file size. Encryption is required to ensure data confidentiality.
Option D: Correct. Different compression techniques have different trade-offs in terms of compression ratio, speed, and resource usage.

803. What is the "cloud"?

Correct Answer: Correct answer is: (B) A wide network of data centers.

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

Difficulty: Moderate

Concept notes: The cloud refers to a network of servers and data centers that are connected over the internet, providing services such as storage, computing, and applications.

Common Mistakes: Students may confuse the cloud with local storage options or think it is a single entity rather than a network of interconnected data centers.

Explanations: The cloud is a wide network of data centers that are interconnected and accessible over the internet. This network allows users to access and store data remotely, rather than on local devices. The term "cloud" does not refer to a single storage location within a computer, a group of computers in a specific building, or all computers worldwide.

Option Analysis:

Option A: Incorrect, as the cloud is not a specific storage location within a computer but a network of data centers.
Option B: Correct, as the cloud is a wide network of data centers connected over the internet.
Option C: Incorrect, as the cloud is not limited to computers stored in a specific building but spans a wide network.
Option D: Incorrect, as the cloud is not all computers worldwide but a specific network of data centers.

Mnemonic: Cloud = Connected Data Centers

804. Which of the following has the biggest character set

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

Exam Relevance: AP Computer Science, SAT Subject Tests, IB Computer Science

Difficulty: Easy

Concept notes: Unicode is a character encoding standard that supports a wide range of characters from various writing systems, including symbols, emojis, and historical scripts.

Common Mistakes: Students may confuse ASCII and Extended ASCII as having larger character sets because they are more commonly used in basic computing.

Explanations: Unicode supports over 137,000 characters, making it the largest character set among the options. ASCII supports only 128 characters, and Extended ASCII supports up to 256 characters. Therefore, Unicode has the biggest character set.

Option Analysis:

Option A: ASCII supports only 128 characters, which is the smallest set among the options.
Option B: Extended ASCII supports up to 256 characters, which is larger than ASCII but still smaller than Unicode.
Option C: Unicode supports over 137,000 characters, making it the largest character set.
Option D: This option is incorrect as Unicode is the correct answer.

805. Which one of the following is an error in computer programme?

Correct Answer: Correct answer is: (D) Bug.

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

Difficulty: Easy

Concept notes: A bug in a computer program refers to an error or flaw in the code that causes the program to behave incorrectly or unexpectedly.

Common Mistakes: Students may confuse a bug with a virus, which is a type of malicious software, not an error in a program.

Explanations: A bug is an error in a computer program that causes it to malfunction or produce incorrect results. It is a flaw in the code that needs to be identified and fixed. Spam and viruses are not errors in a program but rather types of malicious activities or software. A crash is a result of a bug or other issues, but it is not an error itself.

Option Analysis:

Option A: Spam is unsolicited or unwanted messages, not an error in a program.
Option B: A crash is a failure of a program or system, often caused by a bug, but it is not an error itself.
Option C: A virus is a type of malicious software, not an error in a program.
Option D: A bug is an error in a computer program that causes it to malfunction.

806. I store data in rows and columns. I am considered the basic building block of a relational database. I am used to organize information within a database.

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

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

Difficulty: Easy

Concept notes: In a relational database, a table is the basic building block used to organize and store data in rows and columns.

Common Mistakes: Students may confuse a table with a form, query, or report, which are other components of database systems but do not serve the same function as a table.

Explanations: A table in a relational database is used to store data in a structured format with rows representing individual records and columns representing fields or attributes. This structure makes tables the fundamental unit for organizing and managing data within a database.

Option Analysis:

Option A: A form is a user interface element used to input or display data, not a basic building block for data storage.
Option B: A table is the correct answer as it is the basic building block used to organize and store data in a relational database.
Option C: A query is a request for data retrieval from a database, not a storage unit.
Option D: A report is a formatted presentation of data, not a storage unit.

Mnemonic: Think "T" for Table, the "T" in "Tabular Data".

807. Which register is found in the ALU?

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

Exam Relevance: Computer Architecture, Digital Logic Design, Computer Organization

Difficulty: Easy

Concept notes: The accumulator is a register found in the Arithmetic Logic Unit (ALU) that is used to store data temporarily during arithmetic and logical operations.

Common Mistakes: Students may confuse the accumulator with other registers like the Memory Data Register (MDR) or Memory Address Register (MAR), which are not part of the ALU.

Explanations: The accumulator is a key component of the ALU, used to hold operands and intermediate results during computations. It is directly involved in arithmetic and logical operations, making it an integral part of the ALU.

Option Analysis:

Option A: The accumulator is a register found in the ALU.
Option B: The Memory Data Register (MDR) is used for data transfer between memory and the CPU, not part of the ALU.
Option C: The Memory Address Register (MAR) holds the address of the memory location to be accessed, not part of the ALU.
Option D: The Program Counter (PC) holds the address of the next instruction to be executed, not part of the ALU.

Mnemonic: A for ALU, A for Accumulator.

808. Hyperlink

Correct Answer: Correct answer is: (C) Allows a user to navigate between webpages/websites and is often shown as a blue underlined text or as a small pointed finger.

Exam Relevance: SAT, ACT, AP Computer Science Principles

Difficulty: Easy

Concept notes: A hyperlink is a reference to a web page or other digital resource that can be accessed by clicking on it. It is a fundamental component of the web, enabling navigation between different web pages and resources.

Common Mistakes: Students may confuse hyperlinks with cookies or other web technologies, such as extreme data, which are unrelated concepts.

Explanations: A hyperlink is a clickable element that allows users to navigate from one webpage to another or to different resources on the web. It is typically displayed as blue underlined text or a small pointed finger icon. This feature is essential for web browsing and navigation.

Option Analysis:

Option A: This describes cookies, not hyperlinks.
Option B: This describes extreme data, not hyperlinks.
Option C: This correctly describes a hyperlink.
Option D: This describes a network, not a hyperlink.

809. Different components of the motherboard of a PC unit are linked together by sets of parallel electrical conducting lines. What are these lines called?

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

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

Difficulty: Easy

Concept notes: In a PC motherboard, the sets of parallel electrical conducting lines that link different components are called buses.

Common Mistakes: Students may confuse buses with other types of connectors or conductors, but buses specifically refer to the parallel lines that allow data transfer between components.

Explanations: Buses are the sets of parallel electrical conducting lines that connect different components on a motherboard. They allow for the transfer of data, addresses, and control signals between the CPU, memory, and other peripherals. This is why the correct answer is buses.

Option Analysis:

Option A: Conductors are general terms for materials that allow the flow of electricity, but they do not specifically refer to the parallel lines on a motherboard.
Option B: Buses are the correct term for the sets of parallel electrical conducting lines that link different components on a motherboard.
Option C: Connectors are physical devices that join electrical circuits together, but they do not refer to the parallel lines themselves.
Option D: Consecutive refers to items following one after another, which does not describe the parallel nature of the lines on a motherboard.

Mnemonic: Bus = Bunch of wires, Side by side, Used for System

810. The home screen of tally is also known as

Correct Answer: Correct answer is: (B) Gate way of tally.

Exam Relevance: CA Final, CS Executive, CS Professional

Difficulty: Easy

Concept notes: The home screen of Tally is referred to as the Gateway of Tally. It serves as the main entry point for users to access various functionalities and features of the software.

Common Mistakes: Students may confuse the home screen with other interface elements such as the menu bar or button toolbar.

Explanations: The Gateway of Tally is the initial screen that appears when the software is launched. It provides quick access to different modules and features, making it the primary interface for initiating tasks within Tally. This term is specific to Tally's user interface and is widely recognized in the context of the software.

Option Analysis:

Option A: The menu bar is a part of the interface but not the home screen.
Option B: The Gateway of Tally is the correct term for the home screen.
Option C: Accounts info is a feature within Tally, not the home screen.
Option D: Button toolbar is a component of the interface but not the home screen.

Mnemonic: G for Gateway, G for Home.

⬅ Previous SetSet 81Next Set ➡

3 thoughts on “Information and Communication Technology MCQ - Set 81”

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 81”

Leave a Reply