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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 24 of 26

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Q231.
What is the purpose of structured exception handling in Windows?

a.

To generate software exceptions in C++ programs

b.

To provide mechanisms for distributing exceptions to applications in an organized manner

c.

To terminate a program when an exception occurs

d.

To correct problems and make the program continue from the same code position

Discuss
Answer: (b).To provide mechanisms for distributing exceptions to applications in an organized manner Explanation:Structured exception handling means that the operating system provides mechanisms for “distributing” exceptions to applications in an organized manner. Each thread is assigned an exception-handler list, which is a list of routines that can deal with exceptions when they occur. When an exception occurs, the operating system calls each of the registered handlers and the handlers can decide whether they would like to handle the exception or whether the system should keep on looking.
Q232.
What is the thread information block (TIB) data structure?

a.

A data structure that contains the processor's IDT

b.

A data structure that contains a list of exceptions

c.

A data structure that contains the current thread's exception handler list

d.

A data structure that contains the current thread's memory allocation information

Discuss
Answer: (c).A data structure that contains the current thread's exception handler list Explanation:The thread information block (TIB) data structure contains the current thread's exception handler list.
Q233.
How is the current thread's TIB found in runtime on IA-32 processors?

a.

It is stored in a regular private-allocation user-mode memory

b.

It is available at FS:[0]

c.

It is stored in the IDT

d.

It is stored in the Windows kernel

Discuss
Answer: (b).It is available at FS:[0] Explanation:On IA-32 processors, the current thread's TIB is available at FS:[0].
Q234.
What is the ExceptionList member in the TIB data structure?

a.

The head of the current thread's exception handler list

b.

A list of page-fault exceptions

c.

A list of memory allocation information

d.

The current thread's IDT

Discuss
Answer: (a).The head of the current thread's exception handler list Explanation:The ExceptionList member in the TIB data structure is the head of the current thread's exception handler list.
Q235.
What happens when an invalid memory address is accessed in Windows?

a.

The processor generates a page-fault interrupt and invokes the interrupt handler from entry 14 at the IDT

b.

The processor generates an exception and invokes the exception handler from entry 14 at the IDT

c.

The processor generates a system call and invokes the system call handler from entry 14 at the IDT

d.

The processor generates an interrupt and invokes the interrupt handler from entry 15 at the IDT

Discuss
Answer: (a).The processor generates a page-fault interrupt and invokes the interrupt handler from entry 14 at the IDT Explanation:When an invalid memory address is accessed in Windows, the processor generates a page-fault interrupt (interrupt #14) and invokes the interrupt handler from entry 14 at the IDT.
Q236.
What is KiUserExceptionDispatcher in Windows?

a.

A user-mode exception dispatcher routine

b.

A kernel-mode exception dispatcher routine

c.

A memory allocation routine

d.

A system call handler

Discuss
Answer: (a).A user-mode exception dispatcher routine Explanation:KiUserExceptionDispatcher is a user-mode exception dispatcher routine in Windows.
Q237.
What is RtlDispatchException in Windows?

a.

A memory manager routine

b.

A kernel-mode exception dispatcher routine

c.

A user-mode exception dispatcher routine

d.

A system call handler

Discuss
Answer: (c).A user-mode exception dispatcher routine Explanation:RtlDispatchException is a user-mode exception dispatcher routine in Windows.
Q238.
What is the purpose of RtlDispatchException in Windows?

a.

To generate a page-fault interrupt

b.

To look for an exception handler that can deal with the exception

c.

To allocate memory for the current thread

d.

To dispatch a system call

Discuss
Answer: (b).To look for an exception handler that can deal with the exception Explanation:The purpose of RtlDispatchException in Windows is to go through the linked list at ExceptionList and look for an exception handler that can deal with the exception.
Q239.
Where is the exception handler list stored?

a.

In the stack

b.

In the heap

c.

In the thread information block ( TIB ) data structure

d.

In the IDT

Discuss
Answer: (c).In the thread information block ( TIB ) data structure Explanation:The exception handler list is stored in the thread information block (TIB ) data structure.
Q240.
What is the FS segment register used for in Windows?

a.

As a pointer to the currently active thread-specific data structures

b.

To point to the exception handler list

c.

To store the return address of a function call

d.

To access kernel-level functions

Discuss
Answer: (a).As a pointer to the currently active thread-specific data structures Explanation:On IA-32 processors, Windows uses the FS segment register as a pointer to the currently active thread-specific data structures.
Page 24 of 26

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