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?

<p>Linux API for Linux systems (D)</p> Signup and view all the answers

How do APIs interact with system calls in application development?

<p>By invoking actual system calls on behalf of the programmer (A)</p> Signup and view all the answers

What Windows function is used to create a new process?

<p>CreateProcess() (D)</p> Signup and view all the answers

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

<p>LIFO (Last In First Out) (D)</p> Signup and view all the answers

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

<p>Terminate a process that is no longer needed (B)</p> Signup and view all the answers

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

<p>By passing the block's address in a register (B)</p> Signup and view all the answers

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

<p>Devices (B)</p> Signup and view all the answers

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