ICDS Supervisor - Computer Applications (Operating System & Hardware/Software) Practice Test 50MCQs

ICDS Supervisor - Computer Applications (Operating System & Hardware/Software) Practice Test

ICDS Supervisor - Computer Applications (Operating System & Hardware/Software) Practice Test

Targeted 50 MCQ Practice Module focusing on: Operating System Concepts & Types, and Computer Hardware & Software Fundamentals.

Select your answers and click Submit Assessment Answers at the bottom to calculate your total score and review explanations.

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SECTION I: Operating System - Basics & Functions [Questions 1 to 10]
1. Which of the following is the primary function of an Operating System?
Explanation: An Operating System acts as an intermediary that manages computer hardware and software resources and provides common services for programs.
2. Which of the following is an example of an Operating System?
Explanation: Windows 11 is a system software (Operating System), while the others are application programs that run on top of an OS.
3. The OS component responsible for allocating CPU time to various processes is called:
Explanation: The Process Scheduler decides which process runs at a given time and for how long, allocating CPU time efficiently.
4. Which of the following is NOT a function of an Operating System?
Explanation: Compiling source code is done by a Compiler (a language translator), not by the Operating System itself.
5. The basic unit of CPU utilization, forming part of a process, which is smaller than a process, is called a:
Explanation: A Thread is the smallest sequence of programmed instructions that can be managed independently by a scheduler, existing within a process.
6. Which type of user interface allows interaction with the computer through icons, windows, and menus?
Explanation: GUI allows users to interact with the system visually through icons, windows, menus, and pointers, instead of typing text commands.
7. In MS-DOS, which type of user interface is primarily used?
Explanation: MS-DOS is a text-based Operating System where users type commands at a prompt, making it a Command Line Interface.
8. Which of the following is responsible for managing input/output operations between hardware devices and applications?
Explanation: A Device Driver is a specialized software that allows the OS and applications to communicate with a specific hardware device.
9. Virtual memory is a technique that:
Explanation: Virtual Memory allows the OS to use hard disk space as if it were additional RAM, enabling larger programs to run than physical memory would normally allow.
10. The OS technique of rapidly switching the CPU between multiple programs, giving users the illusion that programs run simultaneously, is called:
Explanation: Multitasking allows a single CPU to execute multiple tasks by quickly switching between them, creating the appearance of simultaneous execution.
SECTION II: Operating System - Types & Features [Questions 11 to 20]
11. An OS that allows multiple users to access a single computer system simultaneously through different terminals is called:
Explanation: A Multi-user Operating System permits several users to access and use the same computer's resources at the same time via different terminals.
12. Which type of Operating System processes data and responds within a strict, guaranteed time limit, and is often used in medical and industrial control systems?
Explanation: A Real-Time Operating System guarantees processing and response within strict, predictable time constraints, critical in systems like medical monitoring equipment.
13. Which of the following is an example of an open-source Operating System?
Explanation: Linux is a free and open-source Operating System whose source code is publicly available for modification and distribution.
14. An Operating System that manages a collection of independent computers connected via a network and makes them appear as a single system to users is called:
Explanation: A Distributed Operating System manages a group of independent, networked computers and presents them to users as a single coherent system.
15. In a Time-Sharing Operating System, CPU time is divided among multiple users using a technique called:
Explanation: Time-Sharing systems allocate a small fixed time slot (time quantum) to each user/process in rotation, allowing shared CPU access.
16. Which of the following Operating Systems is specifically designed for smartphones?
Explanation: Android is a mobile Operating System developed by Google, specifically designed for touchscreen devices like smartphones and tablets.
17. Booting the computer using the Power-On Self-Test (POST) and loading the OS for the first time after switching on the machine is called:
Explanation: Cold Booting refers to starting a computer from a completely powered-off state, involving full hardware checks (POST) before loading the OS.
18. Restarting a computer that is already switched on, without turning off the power supply, is known as:
Explanation: Warm Booting (or soft boot) restarts a computer that is already powered on, typically skipping certain hardware checks performed during cold boot.
19. Which of the following is a widely used proprietary Operating System developed by Microsoft?
Explanation: Windows is a proprietary, closed-source Operating System developed and licensed by Microsoft Corporation.
20. The feature of an Operating System that allows a single CPU to execute several processes by giving each process a small time slot in rotation is termed:
Explanation: Time Sharing enables multiple users/processes to share CPU time by allocating short rotating time slots to each, improving responsiveness.
SECTION III: Computer Hardware Fundamentals [Questions 21 to 30]
21. Which component of the computer is regarded as the "Brain" of the computer?
Explanation: The CPU processes all instructions and performs calculations, controlling the operations of the entire computer, earning it the title "Brain of the Computer".
22. The two main components of the CPU are the Control Unit and:
Explanation: The CPU comprises the Control Unit (which directs operations) and the Arithmetic Logic Unit (which performs arithmetic and logical computations).
23. Which type of memory is volatile, meaning its contents are lost when the power is switched off?
Explanation: RAM (Random Access Memory) is volatile memory used for temporary storage of active data, and all its contents are erased once power is cut off.
24. Which of the following is a type of memory that retains data permanently, even without power, and generally cannot be modified by the user?
Explanation: ROM (Read Only Memory) is non-volatile memory that permanently stores essential startup instructions (like BIOS) and is generally not writable by regular users.
25. The main circuit board that holds the CPU, RAM, and other essential components of a computer is called:
Explanation: The Motherboard is the primary printed circuit board that connects and allows communication between the CPU, memory, and other hardware components.
26. Which memory is located inside the CPU itself and is the fastest, holding data currently being processed?
Explanation: Registers are small, high-speed storage locations built directly into the CPU, holding data and instructions currently being processed, making them the fastest memory.
27. 1 Byte is equal to how many bits?
Explanation: A Byte is the standard unit of digital information and is composed of 8 bits (binary digits).
28. Which of the following is an example of a Secondary Storage Device?
Explanation: A Hard Disk Drive is a non-volatile secondary storage device used for permanent, long-term storage of data and programs.
29. A device that converts Alternating Current (AC) to Direct Current (DC) and supplies power to internal computer components is called:
Explanation: The Power Supply Unit converts the AC power from the mains into regulated DC power needed by the motherboard and internal components.
30. Which of the following ports is commonly used to connect a monitor with high-definition video and audio output?
Explanation: HDMI (High-Definition Multimedia Interface) transmits both high-definition video and digital audio signals through a single cable.
SECTION IV: Input, Output & Storage Devices [Questions 31 to 40]
31. Which of the following is an example of an Input Device?
Explanation: A Keyboard is used to feed data and commands into the computer, making it an Input Device, unlike the others which display or produce output.
32. Which of the following is an example of an Output Device?
Explanation: A Monitor displays processed information visually to the user, making it an Output Device, whereas the others are used for feeding input.
33. Which device is used to convert a physical document or photograph into a digital image format?
Explanation: A Scanner optically reads printed text or images and converts them into a digital format for computer processing and storage.
34. Which type of printer forms characters/images by spraying tiny droplets of ink onto paper?
Explanation: An Inkjet Printer produces images by propelling tiny droplets of liquid ink directly onto the paper surface.
35. Which of the following storage devices uses a laser beam to read and write data?
Explanation: CDs and DVDs are optical storage media that use a laser beam to read and write data on their reflective surface.
36. Which storage device has no moving mechanical parts and uses flash memory chips, making it faster than a traditional Hard Disk?
Explanation: A Solid State Drive (SSD) stores data on flash memory chips with no moving parts, resulting in faster read/write speeds than mechanical HDDs.
37. A pointing device that is moved by hand to control the cursor on a computer screen is called:
Explanation: A Mouse is a hand-held pointing input device that detects two-dimensional motion to move and control the on-screen cursor.
38. Which of the following is a device used mainly for playing computer games, providing directional control?
Explanation: A Joystick is an input device with a stick that pivots on a base, primarily used to control movement and direction in computer games.
39. Which storage capacity unit is the largest among the following?
Explanation: The order from smallest to largest is KB < MB < GB < TB, making Terabyte (TB) the largest unit listed.
40. A device used to read coded information printed as parallel lines of varying widths on product packaging is called:
Explanation: A Barcode Reader scans and decodes the pattern of parallel lines (barcodes) printed on product packaging to retrieve product information.
SECTION V: Computer Software Concepts [Questions 41 to 50]
41. Software that is designed to perform a specific task for the end user, such as word processing or spreadsheet calculations, is called:
Explanation: Application Software is designed for end users to accomplish specific tasks like word processing, spreadsheets, or presentations.
42. Which category of software includes the Operating System, Device Drivers, and Language Translators?
Explanation: System Software manages and controls computer hardware to provide a platform for application software; it includes the OS, device drivers, and language translators.
43. A program that translates an entire high-level language source code into machine code at once, before execution, is called:
Explanation: A Compiler translates the entire source code of a high-level language into machine code in one go, generating an executable file before execution begins.
44. A program that translates and executes high-level language source code line-by-line is called:
Explanation: An Interpreter reads, translates, and executes source code one line at a time, rather than converting the whole program at once.
45. A program that converts Assembly Language code into Machine Language code is called:
Explanation: An Assembler is a language translator that specifically converts programs written in Assembly Language into Machine Language (binary code).
46. Firmware refers to:
Explanation: Firmware is low-level software permanently written into a hardware device's ROM, providing basic instructions for how the device operates (e.g., BIOS).
47. Which type of software is distributed free of charge but keeps its source code confidential, unlike Open Source Software?
Explanation: Freeware is provided to users at no cost, but its source code remains proprietary and closed, unlike Open Source Software which allows source code access and modification.
48. Utility software such as antivirus programs, disk defragmenters, and file compression tools are primarily used to:
Explanation: Utility Software performs maintenance tasks that help manage, optimize, protect, and configure a computer system, supporting but not replacing the OS.
49. Software piracy refers to:
Explanation: Software Piracy is the illegal copying, distribution, or use of software without proper authorization or licensing from the copyright holder.
50. Which of the following is an example of Application Software?
Explanation: MS Excel is an application software used by end users for spreadsheet calculations, while Linux, Device Drivers, and BIOS fall under system software/firmware.

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