Welcome to the Low Level Software MCQs Page

Dive deep into the fascinating world of Low Level Software with our comprehensive set of Multiple-Choice Questions (MCQs). This page is dedicated to exploring the fundamental concepts and intricacies of Low Level Software, a crucial aspect of Reverse Engineering. In this section, you will encounter a diverse range of MCQs that cover various aspects of Low Level Software, 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 Low Level Software. 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 Low Level Software. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

Low Level Software MCQs | Page 27 of 30

Explore more Topics under Reverse Engineering

01

Introduction to Reverse Engineering

02

Windows Fundamentals 🔒

03

Reversing Tools 🔒

04

Beyond the Documentation

05

Deciphering File Formats

06

Auditing Program Binaries 🔒

07

Reversing Malware 🔒

08

Piracy and Copy Protection

09

Antireversing Techniques 🔒

10

Breaking Protections 🔒

11

Reversing .NET 🔒

12

Decompilation

13

Deciphering Code Structures 🔒

14

Understanding Compiled Arithmetic

15

Deciphering Program Data 🔒

Q261.

What is the general strategy employed by modern IA-32 processors for achieving parallelism?

Executing two or more instructions at the same time

Reordering sequential instructions

Creating interdependent instructions

Increasing clock speed

Discuss

Answer: (a).Executing two or more instructions at the same time Explanation:The general strategy employed by modern IA-32 processors for achieving parallelism is to simply execute two or more instructions at the same time.

Q262.

What is the impact of modern compilers' optimization techniques on disassembled code?

It makes disassembled code more readable

It makes disassembled code less readable

It has no impact on the readability of disassembled code

It prevents disassembled code from being optimized

Discuss

Answer: (b).It makes disassembled code less readable Explanation:Modern compilers employ a multitude of techniques for generating code that could be made to run as efficiently as possible on modern processors, which naturally has a strong impact on the readability of disassembled code while reversing.

Q263.

What might help in deciphering optimized code?

Understanding the rationale behind optimization techniques

Reversing native IA-32 programs

Increasing clock speed

Removing interdependencies in sequential instructions

Discuss

Answer: (a).Understanding the rationale behind optimization techniques Explanation:Understanding the rationale behind optimization techniques might help in deciphering optimized code.

Q264.

What is the Intel NetBurst microarchitecture?

It is the current execution environment for many of Intel's modern IA-32 processors

It is a type of memory used by IA-32 processors

It is a programming language used for IA-32 processors

None of the above

Discuss

Answer: (a).It is the current execution environment for many of Intel's modern IA-32 processors Explanation:The Intel NetBurst microarchitecture is the current execution environment for many of Intel's modern IA-32 processors.

Q265.

What are μops?

Micro-Ops

Microcode sequences for every instruction in the IA-32 instruction set

Another layer of programming that lies within the processor

Both a and b

Discuss

Answer: (d).Both a and b Explanation:IA-32 processors use microcode for implementing each instruction supported by the processor, and microcode sequences for every instruction in the instruction set are contained within the microcode ROM.

Q266.

What is microcode ROM?

It is another layer of programming that lies within the processor

It is responsible for caching the microcodes of frequently executed instructions

It contains the microcode sequences for every instruction in the instruction set

None of the above

Discuss

Answer: (c).It contains the microcode sequences for every instruction in the instruction set Explanation:The processor has a microcode ROM, which contains the microcode sequences for every instruction in the instruction set.

Q267.

What is the purpose of the execution trace cache?

It is responsible for caching the microcodes of frequently executed instructions

It is used for implementing each instruction supported by the processor

It is a type of memory used by IA-32 processors

None of the above

Discuss

Answer: (a).It is responsible for caching the microcodes of frequently executed instructions Explanation:IA-32 processors employ an execution trace cache that is responsible for caching the microcodes of frequently executed instructions to avoid significant performance bottlenecks caused by constantly fetching instruction microcode from ROM.

Q268.

What is a CPU pipeline?

A type of factory assembly line

A way to break down program instructions into low-level tasks

A component in NetBurst processors

All of the above

Discuss

Answer: (d).All of the above Explanation:A CPU pipeline is like a factory assembly line for decoding and executing program instructions, and that it is used to break down instructions into low-level tasks. Additionally, NetBurst processors use a pipeline consisting of three primary stages.

Q269.

What are the three primary stages of the NetBurst processor pipeline?

Front end, Out of Order Core, Retirement section

Front end, Back end, Execution section

Front end, Instruction section, Out of Order Core

Retirement section, Out of Order Core, Front end

Discuss

Answer: (a).Front end, Out of Order Core, Retirement section Explanation:The NetBurst processor pipeline uses three primary stages: Front end, Out of Order Core, and Retirement section.

Q270.

What is the responsibility of the Front end in the NetBurst processor pipeline?

To reorder sequences of μops based on resource availability

To ensure the original order of instructions is preserved

To decode each instruction and produce sequences of μops that represent each instruction

None of the above

Discuss

Answer: (c).To decode each instruction and produce sequences of μops that represent each instruction Explanation:The Front end in the NetBurst processor pipeline is responsible for decoding each instruction and producing sequences of μops that represent each instruction.

Page 27 of 30

Windows Fundamentals 🔒

Reversing Tools 🔒

Auditing Program Binaries 🔒

Reversing Malware 🔒

Antireversing Techniques 🔒

Breaking Protections 🔒

Reversing .NET 🔒

Deciphering Code Structures 🔒

Deciphering Program Data 🔒

Welcome to the Low Level Software MCQs Page

Low Level Software MCQs | Page 27 of 30

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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