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System Calls and User Mode vs Kernel Mode

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System Calls and User Mode vs Kernel Mode

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Questions and Answers

What initiates system calls by transferring control from user mode to kernel mode?

Software interrupts (correct)

Memory management

Hardware interrupts

Exception handling

Why are system calls essential for processes?

To restrict processes' access to memory management

To prevent processes from interacting with hardware devices

To prevent processes from accessing files

To enable privileged access to system resources (correct)

What is the purpose of APIs in application development?

To replace system calls

To manage hardware devices directly

To provide controlled access to system resources (correct)

To prevent the creation of new processes

Which of the following is NOT one of the most common APIs available to application programmers?

Linux API for Linux systems Signup and view all the answers

How do APIs interact with system calls in application development?

By invoking actual system calls on behalf of the programmer Signup and view all the answers

What Windows function is used to create a new process?

CreateProcess() Signup and view all the answers

In which order are elements accessed in a stack data structure?

LIFO (Last In First Out) Signup and view all the answers

What is the purpose of the system call 'Terminate process()'?

Terminate a process that is no longer needed Signup and view all the answers

How are parameters passed to the operating system when stored in memory?

By passing the block's address in a register Signup and view all the answers

What do device management system calls allow programmers to interact with?

Devices Signup and view all the answers