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Welcome to the Beyond the Documentation MCQs Page

Dive deep into the fascinating world of Beyond the Documentation with our comprehensive set of Multiple-Choice Questions (MCQs). This page is dedicated to exploring the fundamental concepts and intricacies of Beyond the Documentation, a crucial aspect of Reverse Engineering. In this section, you will encounter a diverse range of MCQs that cover various aspects of Beyond the Documentation, 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 Beyond the Documentation. Test your knowledge, expand your horizons, and solidify your grasp on this vital area of Reverse Engineering.

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Beyond the Documentation MCQs | Page 5 of 7

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Q41.
What is the difference between RtlGetElementGenericTable and RtlLookupElementGenericTable?

a.

RtlGetElementGenericTable provides direct access to an element, while RtlLookupElementGenericTable searches for the right element.

b.

RtlLookupElementGenericTable provides direct access to an element, while RtlGetElementGenericTable searches for the right element.

c.

Both functions provide direct access to an element, but in different ways.

d.

Both functions search for the right element, but in different ways.

Discuss
Answer: (a).RtlGetElementGenericTable provides direct access to an element, while RtlLookupElementGenericTable searches for the right element. Explanation:It is impossible to know the exact difference between RtlGetElementGenericTable and RtlLookupElementGenericTable without looking at the code, but the author's guess is that RtlGetElementGenericTable provides direct access to an element (probably using an index), while RtlLookupElementGenericTable searches for the right element.
Q42.
Which function in the generic table API is likely to be the simpler function of the two?

a.

RtlLookupElementGenericTable

b.

RtlGetElementGenericTable

c.

Both functions are likely to be equally complex

d.

It is impossible to determine which function is simpler without looking at the code

Discuss
Answer: (b).RtlGetElementGenericTable Explanation:RtlGetElementGenericTable is likely to be the simpler function of the two functions RtlGetElementGenericTable and RtlLookupElementGenericTable.
Q43.
What is the purpose of RtlGetElementGenericTable?

a.

To add elements to the generic table

b.

To retrieve a specific element from the generic table

c.

To remove elements from the generic table

d.

To search for elements in the generic table

Discuss
Answer: (b).To retrieve a specific element from the generic table Explanation:RtlGetElementGenericTable is made for finding and retrieving elements from the generic table.
Q44.
How does RtlGetElementGenericTable access its parameters?

a.

Using ESP

b.

Using EBP

c.

Using EAX

d.

Using ECX

Discuss
Answer: (b).Using EBP Explanation:RtlGetElementGenericTable starts with a conventional stack frame setup sequence, which tells us that this function’s parameters are going to be accessed using EBP instead of ESP.
Q45.
What is interleaved code?

a.

Code that is placed in the code in its natural order

b.

Code that is placed in pairs of interdependent instructions

c.

Code that is executed sequentially

d.

Code that is executed in parallel

Discuss
Answer: (b).Code that is placed in pairs of interdependent instructions Explanation:Interleaved code means that instructions aren’t placed in the code in their natural order, but instead pairs of interdependent instructions are interleaved so that in runtime the CPU has time to complete the first instruction before it must execute the second one.
Q46.
What is the purpose of the RtlGetElementGenericTable function?

a.

To preserve original values of EBX and ESI

b.

To load the root table pointer into ECX

c.

To compare EDI against -1

d.

To increment EDI by one

Discuss
Answer: (b).To load the root table pointer into ECX Explanation:The purpose of the RtlGetElementGenericTable function is to load the root table pointer into ECX.
Q47.
Which offset contains the total number of elements in the table in RtlGetElementGenericTable?

a.

+10

b.

+14

c.

+0c

d.

+08

Discuss
Answer: (b).+14 Explanation:Offset +14 contains the total number of elements in the table in RtlGetElementGenericTable.
Q48.
What does the comparison of EDI against -1 in RtlGetElementGenericTable signify?

a.

It is a classic case of interleaved code

b.

It is a failure or error condition

c.

It is part of a compound conditional statement

d.

It is a check on the second parameter passed to the function

Discuss
Answer: (d).It is a check on the second parameter passed to the function Explanation:The comparison of EDI against -1 in RtlGetElementGenericTable is a check on the second parameter passed to the function.
Q49.
What is the purpose of the LEA instruction in RtlGetElementGenericTable?

a.

To perform an EBX = EDI + 1

b.

To load the root table pointer into ECX

c.

To compare EDI against -1

d.

To preserve original values of EBX and ESI

Discuss
Answer: (a).To perform an EBX = EDI + 1 Explanation:The purpose of the LEA instruction in RtlGetElementGenericTable is to perform an EBX = EDI + 1.
Q50.
Which conditional jump instruction is used in RtlGetElementGenericTable for the comparison of EBX and EDX?

a.

JG

b.

JA

c.

JE

d.

JGE

Discuss
Answer: (b).JA Explanation:The conditional jump instruction used in RtlGetElementGenericTable for the comparison of EBX and EDX is JA.
Page 5 of 7

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