Which tool is used to monitor real-time read and write speeds on a hard drive to identify applications that are slowing down the system? MCQ with Answer and Explanation

Question

Which tool is used to monitor real-time read and write speeds on a hard drive to identify applications that are slowing down the system?

A. Resource Monitor / Performance Monitor

B. Registry Compactor Engine

C. Disk Cleanup Tool

D. System Uninstaller

Answer: Option A

Solution (By JKSSB Mock Tests)

Performance and resource monitors track real-time hardware usage metrics, helping users spot programs that are heavily consuming disk, CPU, or memory resources.

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Which component of an operating system serves as the textual terminal interface, accepting typed keywords from a user and passing them to the kernel?

A. Device Driver

B. Linker Program

C. Command Line Shell

D. GUI Desktop Manager

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Correct Answer: Option C

Explanation:
The shell is the user interface program that wraps around the kernel, reading user text input commands and executing them.

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Question #2

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What is the purpose of a code library?

A. To manage hardware

B. To store user data

C. To provide reusable code modules

D. To compile programs

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Correct Answer: Option C

Explanation:
Libraries contain pre-written code that programmers can reuse.

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Question #3

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What is the main function of an API?

A. Manages hardware

B. Compiles code

C. Provides user interface

D. Defines how software components interact

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Correct Answer: Option D

Explanation:
APIs specify protocols for communication between software programs.

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