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.

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 8 of 26

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Q71.

What is a heap in Windows applications?

A memory-mapped file mapped into the address space

A data structure enabling the creation of multiple variable-sized blocks of memory within a larger block

Automatic allocation of a stack for every thread

A mapped executable allocation

Discuss

Answer: (b).A data structure enabling the creation of multiple variable-sized blocks of memory within a larger block Explanation:A heap is a data structure that enables the creation of multiple variable-sized blocks of memory within a larger block.

Q72.

How are user-mode stacks allocated in Windows?

By creating a memory-mapped file

By calling HeapAlloc Win32 API

By allocating private blocks using the VirtualAlloc API

The system allocates a stack automatically for every thread while it is being created

Discuss

Answer: (d).The system allocates a stack automatically for every thread while it is being created Explanation:User-mode stacks are essentially regular private allocations, and the system allocates a stack automatically for every thread while it is being created.

Q73.

How are mapped executable allocations used in Windows?

For sharing memory between two or more programs

For creating multiple variable-sized blocks of memory within a larger block

For allocating memory blocks using the VirtualAlloc Win32 API

For loading application code into memory as a memory-mapped file

Discuss

Answer: (d).For loading application code into memory as a memory-mapped file Explanation:Mapped executable allocations are used for loading application code into memory as a memory-mapped file.

Q74.

What is the difference between private allocations and mapped allocations?

Private allocations are used for sharing memory between two or more programs, while mapped allocations are for local allocations.

Private allocations are created by mapping a physical file to memory, while mapped allocations are created using the VirtualAlloc Win32 API.

Private allocations are process private and were allocated locally, while mapped allocations are memory-mapped files that are mapped into the address space.

Private allocations are allocations that are kernel private and were allocated locally, while mapped allocations are created by calling the HeapAlloc Win32 API.

Discuss

Answer: (c).Private allocations are process private and were allocated locally, while mapped allocations are memory-mapped files that are mapped into the address space. Explanation:Private allocations are process private and were allocated locally, while mapped allocations are memory-mapped files that are mapped into the address space.

Q75.

What is VirtualAlloc used for?

Allocating private memory block in a user-mode address space

Creating a section object

Querying a memory block

Freeing a private allocation block

Discuss

Answer: (a).Allocating private memory block in a user-mode address space Explanation:VirtualAlloc is used to allocate a private memory block within a user-mode address space.

Q76.

What is VirtualProtect used for?

Allocating private memory block in a user-mode address space

Setting memory region's protection settings

Querying a memory block

Freeing a private allocation block

Discuss

Answer: (b).Setting memory region's protection settings Explanation:VirtualProtect is used to set a memory region's protection settings, such as whether the block is readable, writable, or executable.

Q77.

What is VirtualQuery used for?

Allocating private memory block in a user-mode address space

Setting memory region's protection settings

Querying a memory block

Freeing a private allocation block

Discuss

Answer: (c).Querying a memory block Explanation:VirtualQuery is used to query the current memory block (retrieving information for the block's VAD node) for various details such as what type of block it is and whether it's reserved, committed, or unused.

Q78.

What is VirtualFree used for?

Allocating private memory block in a user-mode address space

Setting memory region's protection settings

Querying a memory block

Freeing a private allocation block

Discuss

Answer: (d).Freeing a private allocation block Explanation:VirtualFree is used to free a private allocation block (like those allocated using VirtualAlloc).

Q79.

What are the Ex versions of the memory management APIs used for?

Querying memory blocks of another process

Allocating private memory block in another process's address space

Querying memory blocks in the current process

Allocating private memory block in the current process's address space

Discuss

Answer: (b).Allocating private memory block in another process's address space Explanation:The Ex versions of the memory management APIs receive a handle to a process object and can operate on the address spaces of processes other than the one currently running.

Q80.

What is the function of section object APIs in Win32?

Creating a memory-mapped file

Mapping a section object into the user-mode address space

Unmapping a section object from the user-mode address space

All of the above

Discuss

Answer: (d).All of the above Explanation:Section object APIs in Win32 are used for creating a memory-mapped file using the CreateFileMapping API, mapping a section object into the user-mode address space using the MapViewOfFileEx API, and unmapping a section object from the user-mode address space using the UnmapViewOfFile API.

Page 8 of 26

Low Level Software 🔒

Reversing Tools 🔒

Auditing Program Binaries 🔒

Reversing Malware 🔒

Antireversing Techniques 🔒

Breaking Protections 🔒

Reversing .NET 🔒

Deciphering Code Structures 🔒

Deciphering Program Data 🔒

Welcome to the Windows Fundamentals MCQs Page

Windows Fundamentals MCQs | Page 8 of 26

Explore more Topics under Reverse Engineering

Introduction to Reverse Engineering

Beyond the Documentation

Deciphering File Formats

Piracy and Copy Protection

Decompilation

Understanding Compiled Arithmetic

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