Identify the correct definition of Shell.
Difficulty: Medium
About this MCQ
This Medium Operating Systems question asks: Identify the correct definition of Shell. The correct choice is B. A user interface that allows users to interact with the operating system by issuing commands.. Read the options below, commit to one, then use the explanation to see why that choice holds and why the others do not.
Operating Systems items like this one are written for Pakistan exams such as CSS, FPSC, PPSC, and NTS. The difficulty label is a hint about how much of the topic the stem assumes, not a score. Tags and exam names, when they are present, tell you where else the same idea is tested. Previous and next links stay in Operating Systems so you can continue the subject. Related questions point at nearby stems if you want another angle on the same idea.
Treat the explanation as part of the question, not a footnote. If you missed it, reread the stem against the correct option before you open the next Operating Systems item. A timed quiz is the same pool with a clock and a score. A past paper is a full sitting rather than this single question.
- A. A programmatic way for an application to request a service from the operating system's kernel.
Why not A: “A programmatic way for an application to request a service from the operating system's kernel.” does not fit this question. The answer is A user interface that allows users to interact with the operating system by issuing commands..
- B. A user interface that allows users to interact with the operating system by issuing commands. ✓
- C. A technique that stores data temporarily for a device such as a printer so a slower device does not block faster processes.
Why not C: “A technique that stores data temporarily for a device such as a printer so a slower device does not block faster processes.” does not fit this question. The answer is A user interface that allows users to interact with the operating system by issuing commands..
- D. A synchronization object that allows only one thread to access a resource at a time.
Why not D: “A synchronization object that allows only one thread to access a resource at a time.” does not fit this question. The answer is A user interface that allows users to interact with the operating system by issuing commands..
Correct answer
B. A user interface that allows users to interact with the operating system by issuing commands.
Explanation
A user interface that allows users to interact with the operating system by issuing commands option B is the accepted answer to Identify the correct definition of Shell Option A A programmatic way for an application to request a service from the operating system's kernel does not fit this question Option C A technique that stores data temporarily for a device such as a printer so a slower device does not block faster processes does not fit this question Option D A synchronization object that allows only one thread to access a resource at a time does not fit this question For this Operating Systems question the accepted answer is.
Source: Operating Systems Official Reference Guide
Tags: computer science, operating systems, OS concepts, process management
Submitted by: MCQsHub Editorial
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