Which of the following is a type of real-time scheduling algorithm? MCQ with Answer and Explanation

Question
Which of the following is a type of real-time scheduling algorithm?
A. Round Robin
B. Priority Inheritance
C. Rate Monotonic
D. Lottery Scheduling
Answer: Option C
Solution (By JKSSB Mock Tests)
Rate Monotonic is a fixed-priority real-time scheduling algorithm for periodic tasks; others are general-purpose.
This question belongs to: Computer Operating Systems
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Question #1
In Windows, the 'PowerShell' is:
A. A replacement for Command Prompt
B. An advanced command-line shell
C. A task automation framework and scripting language
D. All of the above
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Correct Answer: Option D

Explanation:
PowerShell is a powerful scripting environment with cmdlets, object-oriented pipeline, and automation capabilities.
This question belongs to: Computer Operating Systems
Question #2
Which of the following conditions is NOT a necessary requirement for a deadlock to occur within an operating system environment?
A. Hold and Wait
B. Circular Wait
C. Preemption
D. Mutual Exclusion
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Correct Answer: Option C

Explanation:
According to Coffman's conditions, deadlocks require *No Preemption*. If resources can be preempted, a deadlock situation can be broken or prevented.
This question belongs to: Computer Operating Systems
Question #3
Which Linux command is used to stop a running service (e.g., Apache)?
A. service stop
B. pkill service
C. systemctl stop service
D. kill -9 PID
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Correct Answer: Option C

Explanation:
On systemd-based Linux, systemctl stop is used to stop services; older sysvinit used service command.
This question belongs to: Computer Operating Systems
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