What is the purpose of the 'Secure Boot' feature in UEFI? MCQ with Answer and Explanation

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What is the purpose of the 'Secure Boot' feature in UEFI?

A. To prevent unauthorized operating systems or bootloaders from loading during startup

B. To encrypt the hard disk

C. To provide a password protection

D. To speed up boot process

Answer: Option A

Solution (By JKSSB Mock Tests)

Secure Boot ensures that only signed and trusted boot loaders and OS kernels can run, protecting against malware like rootkits.

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Practice More Operating Systems Questions

Question #1

Which of the following is a characteristic of a monolithic kernel?

A. Only the core services run in kernel mode, others in user mode

B. It is more stable than microkernel

C. All OS services run in kernel mode with high performance

D. It is easier to extend

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Correct Answer: Option C

Explanation:
Monolithic kernel includes all system services (file system, drivers, memory management) in kernel space, which can improve performance but reduce stability.

This question belongs to: Computer Operating Systems

Question #2

In operating systems, what is the primary function of the 'Medium-Term Scheduler'?

A. To handle real-time peripheral device drivers.

B. To swap processes out of main memory to secondary storage (and vice versa) to control the degree of multiprogramming.

C. To control the initial BIOS POST test routines.

D. To assign processes directly to an available CPU core.

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Correct Answer: Option B

Explanation:
The medium-term scheduler removes processes from main memory temporarily (swapping out) to reduce the degree of multiprogramming and manage memory constraints.

This question belongs to: Computer Operating Systems

Question #3

What is the purpose of the Android 'SharedPreferences'?

A. To cache data temporarily

B. To store primitive data in key-value pairs persistently

C. To store complex objects

D. To share data between apps

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Correct Answer: Option B

Explanation:
SharedPreferences is used for storing small amounts of simple data (booleans, strings, ints) for app settings.

This question belongs to: Computer Operating Systems

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