6. Communication Between Kernel and User Space

Try these first

1. 1.

   What does a system call do?

   Hint

   Think about how applications interact with the kernel.

2. 2.

   Name two types of device files.

   Hint

   Consider how devices are categorized by data handling.

3. 3.

   What is a system call?

   • A way for kernel to call user applications
   • A function for user applications to request services from the kernel
   • A type of hardware interface

   Hint

   Think about how applications request resources.

4. 4.

   Device files in Linux are used for:

   • True
   • False

   Hint

   Consider how hardware interaction is structured in Linux.

5. 5.

   Design a simple user-space application that utilizes at least three different system calls and explain how they interact with the kernel.

   Hint

   Think of how applications use files and request data.

6. 6.

   Develop a scenario where shared memory significantly improves performance compared to traditional file I/O. Discuss the implications.

   Hint

   Consider applications that need rapid data exchange.