Hindi Objective mcq for competitive exams for Students
A pen drive can be best described as
A) A permanent secondary storage device
B) A magnetic-based secondary storage medium
C) A portable secondary storage device
D) None of these
Explanation: A storage device in computing is designed to retain digital data either temporarily or permanently depending on its function and underlying Technology. Secondary storage devices are external to the main memory and are used for long-term data storage and transfer. These devices may use magnetic, optical, or flash-based technologies to store information. Flash-based storage is widely preferred due to its compact size, durability, and ability to retain data even without power supply. Such devices are highly portable, allowing users to easily carry and transfer files between different systems. Their design supports quick plug-and-play usage, making them convenient for modern computing needs. Understanding storage categories helps in distinguishing how data is preserved, accessed, and moved across digital platforms.
Option c - A portable secondary storage device
A mouse is categorized as a/an
A) Memory unit
B) Central Processing Unit
C) Input device
D) Output device
Explanation: Computer hardware components are classified based on their roles in data processing and system interaction. Input devices are responsible for sending data, commands, or signals into a Computer system for processing. These devices act as a bridge between the user and the machine, enabling interaction with graphical interfaces and software applications. Pointing devices are a specific type of input hardware used to control movement and selection on a screen through physical motion. They convert user actions into digital signals that the system can interpret. Such devices are essential for navigation, selection, and efficient interaction with modern operating systems. Understanding this classification helps in identifying how information flows into a Computer for further processing.
Option c - Input device
Which of the following does not function as an output device?
A) Monitor
B) Printer
C) Mouse
D) Plotter
Explanation: Computer systems communicate with users through specific hardware components designed either to send data into the system or present processed results from it. Output devices are responsible for displaying, printing, or projecting information that has already been processed by the system. These devices convert digital signals into human-readable or perceivable forms such as visuals or printed text. However, some devices are primarily designed for input, meaning they send data into the Computer rather than displaying results from it. Such devices are essential for interaction but do not present processed information back to the user. Understanding this distinction helps in clearly separating input-based interaction tools from output presentation tools in computing environments.
Option c - Mouse
Which one among the following is not an output device?
A) Touch screen
B) Monitor
C) Printer
D) Plotter
Explanation: In a Computer system, output devices are hardware components that display or present processed data to the user in visual, printed, or physical form. These devices receive processed instructions from the CPU and convert them into a readable format. Examples include visual display units, printers, and plotting devices that generate graphical outputs. However, certain devices are designed specifically for capturing user input and sending it to the system for processing. These input-focused devices play a crucial role in human-Computer interaction but do not produce any direct output from processed data. Identifying the function of each hardware component is essential for understanding how information flows within a computing system.
Option a - Touch screen
Who is credited with inventing the electronic Computer?
A) Dr. Alan M. Turing
B) Karl Benz
C) Thomas Alva Edison
D) Edward Teller
Explanation: The development of electronic computing systems was a major milestone in the History of Technology, involving early theoretical concepts and mechanical designs that evolved over time. Early pioneers contributed ideas related to programmable machines and computational logic, which laid the foundation for modern computers. These innovations focused on automating calculations using electronic circuits rather than mechanical systems. The Evolution of computing involved multiple stages, including conceptual designs, experimental machines, and eventually fully electronic systems capable of executing instructions at high speed. Understanding this historical development helps in recognizing the contributions of early scientists and engineers who shaped modern digital computing Technology.
Option a - Dr. Alan M. Turing
The development of the digital Computer first took place in
A) Russia
B) Britain
C) United States of America
D) Japan
Explanation: Digital computing Technology emerged during the early phase of electronic innovation when scientists and engineers began building machines capable of performing calculations using binary logic. Different countries contributed to early developments in computing through research, wartime innovations, and academic experimentation. These advancements were driven by the need for faster and more accurate computation compared to mechanical systems. Early digital computers used electronic circuits and were significantly larger and slower than modern systems, yet they marked the beginning of the digital era. The geographical origin of this development is associated with early research laboratories and institutions that focused on electronic computation and automation.
Option b - Britain
The earliest concept of a Computer was introduced by
A) Bill Gates
B) Bill Clinton
C) Charles Babbage
D) Marconi
Explanation: The foundation of modern computing began with early theoretical ideas about machines capable of performing logical and mathematical operations automatically. These concepts were developed long before electronic computers existed and focused on designing mechanical systems that could follow instructions. Early pioneers proposed machines that could be programmed using predefined instructions to perform complex calculations. These ideas introduced the concept of algorithmic processing and programmable computation, which became the basis for modern computer science. The earliest designs included mechanical components and analytical models that influenced later developments in electronic computing systems. Understanding this origin helps in tracing how computational thinking evolved into modern digital Technology.
Option c - Charles Babbage
Who is widely known as the “Father of Computers”?
A) Bill Gates
B) Charles Babbage
C) Narayan Murthy
D) Tim Berners-Lee
Explanation: The title associated with the development of computing is given to individuals who made foundational contributions to the design of programmable machines. Early computing theory involved the creation of mechanical designs capable of performing mathematical operations automatically. These ideas introduced structured computation using step-by-step instructions, forming the basis of modern programming concepts. The pioneer in this field conceptualized machines that could perform complex calculations without continuous human intervention. His designs included early models of analytical computation that influenced later generations of electronic computers. His work is considered fundamental in the History of computing due to its lasting impact on modern digital systems.
Option b - Charles Babbage
In the term “2G Spectrum”, the letter ‘G’ stands for
A) Global
B) Government
C) Generation
D) Google
Explanation: Mobile Communication technologies are categorized into generations based on their technological advancement and data transmission capabilities. Each generation represents an improvement in speed, connectivity, and service quality compared to the previous one. These generations are labeled sequentially to indicate progress in wireless Communication standards. The terminology is widely used in telecommunications to describe different stages of mobile NetworkEvolution. Earlier generations focused mainly on voice Communication, while later ones introduced data services and internet connectivity. Understanding this classification helps in identifying how mobile networks have evolved over time to support modern Communication needs.
Option c - Generation
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