GREM Assembly Language & Debugging Fundamentals

Question 1

What is the purpose of the MOV instruction in assembly language?

Accepted Answer

It transfers data between registers or memory locations

Answer

It multiplies two numbers.

Answer

It performs a conditional jump.

Answer

It compares two strings.

Question 2

Which register is commonly used as the stack pointer in x86 architecture?

Accepted Answer

ESP

Answer

EAX

Answer

ECX

Answer

EBX

Question 3

What does the INT 0x80 instruction do in Linux assembly?

Accepted Answer

It triggers a software interrupt to perform a system call

Answer

It initializes the bootloader.

Answer

It exits the program with an error.

Answer

It restarts the CPU.

Question 4

What is the function of a debugger in reverse engineering?

Accepted Answer

To inspect and manipulate a program’s runtime behavior

Answer

To encrypt malware.

Answer

To edit assembly source files.

Answer

To simulate BIOS calls.

Question 5

What does a NOP instruction do?

Accepted Answer

It performs no operation

Answer

It adds two registers.

Answer

It jumps to another instruction.

Answer

It compares memory segments.

Question 6

Which tool is commonly used for debugging in reverse engineering?

Accepted Answer

IDA Pro

Answer

Photoshop

Answer

Illustrator

Answer

Excel

Question 7

Which register typically holds the return address after a function call in x86?

Accepted Answer

ESP

Answer

EAX

Answer

EDX

Answer

EBP

Question 8

Which instruction is used to return from a function in assembly?

Accepted Answer

RET

Answer

JMP

Answer

CALL

Answer

PUSH

Question 9

Why is assembly important in reverse engineering malware?

Accepted Answer

Because malware analysts must analyze binary instructions directly

Answer

Because it hides code from debuggers.

Answer

Because malware can only be written in assembly.

Answer

Because it speeds up the CPU.