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Welcome to the Windows Fundamentals MCQs Page

Dive deep into the fascinating world of Windows Fundamentals with our comprehensive set of Multiple-Choice Questions (MCQs). This page is dedicated to exploring the fundamental concepts and intricacies of Windows Fundamentals, a crucial aspect of Reverse Engineering. In this section, you will encounter a diverse range of MCQs that cover various aspects of Windows Fundamentals, from the basic principles to advanced topics. Each question is thoughtfully crafted to challenge your knowledge and deepen your understanding of this critical subcategory within Reverse Engineering.

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Check out the MCQs below to embark on an enriching journey through Windows Fundamentals. Test your knowledge, expand your horizons, and solidify your grasp on this vital area of Reverse Engineering.

Note: Each MCQ comes with multiple answer choices. Select the most appropriate option and test your understanding of Windows Fundamentals. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

Windows Fundamentals MCQs | Page 11 of 26

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Q101.
Why does a thread in Windows need two stacks?

a.

Because it needs to run multiple programs at the same time

b.

Because it needs to switch between user-mode code and kernel-mode code

c.

Because it needs to manage multiple memory address spaces

d.

Because it needs to manage multiple data structures at the same time

Discuss
Answer: (b).Because it needs to switch between user-mode code and kernel-mode code Explanation:A thread can run in both user mode and kernel mode, and must have two stacks: one for when it’s running in user mode and one for when it’s running in kernel mode.
Q102.
What are the components responsible for managing threads in Windows?

a.

Memory blocks and code modules

b.

Contexts and stacks

c.

Programs and processes

d.

The scheduler and the dispatcher

Discuss
Answer: (d).The scheduler and the dispatcher Explanation:The components that manage threads in Windows are the scheduler and the dispatcher.
Q103.
Can a thread be interrupted while running in kernel mode in the Windows architecture?

a.

Yes

b.

No

c.

May be Yes or No

d.

Can't say

Discuss
Answer: (a).Yes Explanation:A thread can usually be interrupted while running in kernel mode.
Q104.
Are all Win32 APIs interruptible?

a.

Yes

b.

No

c.

May be Yes or No

d.

Can't say

Discuss
Answer: (a).Yes Explanation:Virtually every Win32 API is interruptible.
Q105.
What is the process of achieving concurrency with multiple threads in a multithreaded kernel?

a.

Loading context and initializing values of all CPU registers

b.

Letting a thread run

c.

Switching to a new thread

d.

All of the above

Discuss
Answer: (d).All of the above Explanation:The process involves "loading its context," "letting it start running," and "switching to a new thread."
Q106.
Why do threads frequently give up the CPU on their own volition?

a.

Because the kernel interrupts them

b.

Because they are waiting for something

c.

Because they are finished executing

d.

Because the kernel switches to run another thread

Discuss
Answer: (b).Because they are waiting for something Explanation:Threads frequently just give up the CPU on their own volition...whenever a program is waiting for something.
Q107.
What is one example of a common Win32 API that causes a program to wait?

a.

GetMessageWin32

b.

SendMessageWin32

c.

PostMessageWin32

d.

PeekMessageWin32

Discuss
Answer: (a).GetMessageWin32 Explanation:One of the most common examples is when a program calls the GetMessageWin32 API.
Q108.
What happens when a program calls the GetMessageWin32 API and there are no messages in the queue?

a.

The program stalls and does not return

b.

The kernel saves the entire processor state and switches to run another thread

c.

The kernel interrupts the thread and runs another one

d.

The program continues running without any input

Discuss
Answer: (b).The kernel saves the entire processor state and switches to run another thread Explanation:GetMessage just enters a waiting mode and doesn’t return until new user input becomes available...At this point the kernel saves the entire processor state and switches to run another thread.
Q109.
What does the kernel do when an application performs a slow I/O operation?

a.

It interrupts the thread and runs another one

b.

It stalls and waits for the operation to complete

c.

It lets the thread continue running

d.

It switches to run another thread while the operation is being performed

Discuss
Answer: (d).It switches to run another thread while the operation is being performed Explanation:The kernel switches to run another thread while the hardware is performing the operation.
Q110.
What is preemptive scheduling?

a.

A technique to assign quantum to threads

b.

A technique to interrupt threads after a certain time

c.

A technique to run threads simultaneously

d.

A technique to block threads

Discuss
Answer: (b).A technique to interrupt threads after a certain time Explanation:Preemptive scheduling is a technique used by operating systems to interrupt threads after a certain time and allow other threads to run.
Page 11 of 26

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