FCPC - COMPORG - Midterm Exam

What is the role of the Code Segment (CS) register in x86 assembly?

• Holds the address of the next instruction

• Points to the current instruction

• Manages the program counter

• Points to the code segment, including the instructions

Which register is commonly used as an index register for array operations in x86 assembly?

• EAX

• ECX

• EDX

• EBX

In x86 assembly, what is the purpose of the Stack Segment (SS) register?

• Points to the top of the stack

• Holds the address of the next instruction

• Points to the stack segment, including the stack space

• Manages the program counter

Which register is commonly used for input/output operations in x86 assembly on Linux?

• EAX

• EBX

• ECX

• EDX

The Data Segment (DS) register in x86 assembly is used to point to:

• The current instruction

• The data segment, including variables and constants

• The stack segment

• The code segment

Which system call is used for opening a file in Linux?

• open()

• read()

• write()

• close()

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

• Perform arithmetic operations

• Move data between registers or memory locations

• Control program flow

• Invoke system calls

The instruction INT 0x10 in x86 assembly is commonly used for:

• Input/Output operations

• Integer arithmetic

• Floating-point arithmetic

• String manipulation

Which register is often used as a counter in loop operations in x86 assembly?

• EAX

• ECX

• EDX

• EBX

What does the instruction "ADD EAX, 5" do in x86 assembly?

• Adds the value 5 to the EAX register

• Adds the value in memory location 5 to the EAX register

• Adds the values in EAX and 5 and stores the result in EAX

• Adds the values in EAX and 5 and stores the result in memory location 5