The following statements are true regarding Operating System, EXCEPT?

AIIMS Raipur NO - 2017 (Shift-1)

Computer and Nursing Information

Medium

Appeared in: AIIMS Raipur NO - 2017 (Shift-1)

Explanation

The statement that an OS is essential for a computer to switch on is incorrect.
When a computer is powered on, the first program that runs is the BIOS (Basic Input/Output System) or UEFI, which is firmware stored on the motherboard.
The BIOS/UEFI performs a Power-On Self-Test (POST) to check the hardware.
Only after the POST is successful does the BIOS/UEFI proceed to load the Operating System from the storage drive.
Therefore, the computer is already 'on' and running firmware before the OS is even loaded.

Option A: This statement is true. A core function of an OS is to act as a manager for all the computer's hardware, coordinating communication and operation between components like the CPU, memory, and peripherals.
Option B: This statement is true. Resource management and optimization are key responsibilities of an OS. It handles CPU scheduling, memory allocation, and disk access to ensure the system runs efficiently.
Option D: This statement is true. The OS manages the file system, which provides the structure for data storage and the methods for retrieving files and information from drives.

Visual 1: Flowchart: Computer Boot Sequence. A visual flowchart showing the steps from pressing the power button, through BIOS/UEFI and POST, to the OS loading and taking control. This clarifies the sequence and shows that the OS is not the first thing to run.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Functions of an Operating System and the computer boot process as background academic context rather than a clinical decision trigger.
Basic computer literacy is essential for modern nursing practice. Nurses constantly interact with computers for Electronic Health Records (EHRs), patient monitoring systems, and telemedicine platforms.
Understanding the fundamental roles of hardware, firmware (BIOS), and software (OS) can help in basic troubleshooting and communicating effectively with IT support.
What if? If a hospital computer fails to start and only shows text on a black screen (the BIOS/UEFI interface), a nurse with this knowledge would understand it's likely a hardware or boot device issue, not a problem with the hospital's main software application. This allows for a more accurate report to the IT department (e.g., 'The computer won't load Windows, it's stuck on the startup screen').

How to Approach the Question

Identify the keyword 'EXCEPT'. This signals that three of the options are true statements about the topic, and one is false. Your task is to find the false statement.
Read the main subject of the question, which is 'Operating System'.
Evaluate each option one by one, asking 'Is this statement a true function or characteristic of an Operating System?'
Option A: Does an OS coordinate computer parts? Yes. This is true.
Option B: Does an OS optimize resources? Yes. This is true.
Option C: Is an OS needed to switch on? Think about the sequence. The power comes on first, then something else must load the OS. So, this is likely false.

Concept Tested & Keywords

Concept Tested: Functions of an Operating System and the computer boot process.
Stem keywords: Operating System, OS, computer
Lead-in keywords: EXCEPT
Negative lead-in flag: The question uses the word EXCEPT, which means you must find the one statement that is FALSE.

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