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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 ______
Solution
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

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Match each statement to the most appropriate choices. More than one .pdf

  • 1. 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 ______ Solution 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