Match each statement to the most appropriate choices. More than one choice may b
ID: 3930073 • Letter: M
Question
Match each statement to the most appropriate choices. More than one choice may be appropriate.
Choices:
A – System Call
B – Library Function
C – User Program
Statements:
Enters the OS kernel via a trap instruction ______
Code is stored in user space ______
Code is stored in kernel space ______
Switches the processor to kernel (supervisor) mode ______
Encapsulates (wraps) other functions ______
Always starts at a fixed physical memory address ______
Returns control to user space once finished ______
Pushes library function arguments onto program stack ______
Calling convention is highly machine dependent ______
Implements the POSIX standard ______
Explanation / Answer
A) System call - Switches the processor to the kernel (supervisor) mode
B)Library function - Returns control to user space once finished
C)User program - code is stored in kernel space