One or more users simultaneously on two or more processors are known as?

AIIMS Nagpur NO - 2018

Computer and Nursing Information

Easy

Appeared in: AIIMS Nagpur NO - 2018

Explanation

The defining characteristic of multiprocessing is the use of two or more central processing units (CPUs) within a single computer system.
This architecture allows for the true simultaneous execution of multiple processes, as different processors can handle different tasks at the exact same time.
The question's keywords, 'simultaneously' and 'two or more processors,' directly align with the definition of multiprocessing.

Option A: Time-sharing involves multiple users sharing a single processor by dividing its time into slices. It does not involve multiple processors running tasks simultaneously.
Option B: Multiprogramming is the technique of keeping several programs in main memory and executing them concurrently using a single CPU. The CPU switches between programs, but does not execute them simultaneously.
Option C: Multitasking allows a single user to perform multiple tasks at once. While it can be implemented on a multiprocessing system, it can also be simulated on a single-processor system through rapid task switching (a form of time-sharing). The term is not specific to using multiple processors.

Visual 1: Diagram - A flowchart comparing Time-sharing, Multiprogramming, Multitasking, and Multiprocessing. It should show one CPU for the first three, with arrows indicating switching or time slices, and multiple CPUs for multiprocessing with parallel execution paths.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Operating System Concepts: Types of Processing as background academic context rather than a clinical decision trigger.
Understanding these concepts is relevant for nurses working with modern healthcare technology. Hospital Information Systems (HIS), electronic health records (EHRs), and advanced medical imaging devices (like CT and MRI scanners) rely on multiprocessing to handle complex tasks and multiple user requests efficiently and without delay.
A failure or slowdown in these systems can directly impact patient care, from accessing patient data to processing diagnostic images.
What if? If a hospital's central server did not use multiprocessing, it would likely rely on time-sharing. This would mean that during peak hours, with many nurses and doctors trying to access patient records simultaneously, the system would become extremely slow, as each user would have to wait for their 'turn' with the CPU, potentially delaying critical care decisions.

How to Approach the Question

First, identify the key phrases in the question: 'simultaneously' and 'two or more processors'.
Analyze the meaning of each keyword. 'Simultaneously' implies tasks are happening at the exact same time, not just appearing to.
'Two or more processors' specifies the hardware configuration.
Evaluate each option against these keywords.
Time-sharing, multiprogramming, and multitasking can all occur on a single processor system. They create the illusion of simultaneous execution through rapid switching.
Only 'Multiprocessing' specifically requires two or more processors to achieve true simultaneous execution. Therefore, it is the correct match for the question's description.

Concept Tested & Keywords

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