Linux Device Driver and Linux Kernel Interview Questions

This course list out almost all variety of linux device driver interview questions.These LDD questions covers almost all the questions can be asked for the skills of Linux device driver, Linux kernel development, OS development,embedded software development etc. This article also contains linux kernel interview questions which covers almost all the linux kernel module wise questions.

So if you are going for the interview or preparing for the interview for the any of above skills then have a quick view or quick revision on these questions. Below is list of some of the questions

Process management:-

1) how to manipulate the current process.

2) what are kernel thread.

3) how threads are implemented in linux kernel.

4) What are different state of a process in lunix.

5) what is difference between process and thread.

6) generally what resources are shared between threads.

7) what is process descriptor

8) what is task_struct.

9) what is therad_info structure for.

10) what was the need of thread_info structure.

11) difference betwen fork() and vfork()

12) what is process context.

13) what is zombie process.

14) how parent less process is handles in linux.

Process Scheduling:-

1) what is process scheduling

2) what is cooperative multitasking and pre-emptive multitasking.

3) what is yielding.

4) what is limitation of cooperative multitasking.

5) I/O bound versus Processor bound process.

6) what is process priority.

7) What kind of priority is maintained in linux.

8) what is nice value.

9) what is virtual run time.

10) what are the available scheduling classes in linux.

11) which type os scheduling used in linux.

12)  how next task is picked for scheduling.

13) what is scheduler entry point in linux.

14) what is waitqueus.

15) How context switching is handled in linux.

16) what is user preemption and kernel preemption

Syscalls:-

1) what is syscalls.

2) how system calls are implemented in linux.

3) what happens when process in userspace calls a syscall.

4) what is the need of verifying parameter in definition of syscall.

5) what is system calls context.

6) why it is not recommended to writing new syscall.

Device Driver interview Question

1) What is device driver and what is the need of it.

2) what are different kind of devices.

3) what is module in linux.

4) how mudules are loaded in linux.

5) difference between insmod and modprobe.

6) how parameters are shared between driver modules.

7) what are IOCTLS.

8) what is syscalls.

9) what are the benefits of syscalls.

10) how character driver is registered in linux.

11) what is init and exit function of a driver.

12) how and when init and exit function of driver get called.