Why do you use kmalloc to allocate memory inside the device driver ? What are the limitations of malloc inside kernel mode ?

Please send me the device driver interview questions with answers

device drivers interview questions and answers

Here is a listing of Linux / Unix Technical Interview Questions & Answers for experienced IT professionals as well as fresh engineering graduates. These questions can be attempted by anyone focusing on Linux Development and Systems programming. If you liked any question, please endorse it by liking it or share it with your friends.

1. On x86-32 Linux, at which address the code segment of the program starts?
a) 0×00000000
b) 0×08048000
c) 0×80000000
d) 0xbfff0000

Answer:b

2. On x86-32 Linux, at which address the user stack resides normally?
a) 0×00000000
b) 0x3fff0000
c) 0x7fff0000
d) 0xbfff0000

Answer:d

3. A system has 512MB of physical memory. Which among the following is not a suitable virtual memory size for this system architecture?
a) 512MB
b) 256M
c) 4GB
d) None of the above

Answer:d

4. LRU stands for
a) Last received Unit
b) Least recently Used
c) Least recently usable
d) Lost Recoverd unit

Answer:b

5. Mm_struct maintains?
a) memory files
b) open files
c) pipe
d) active memory regions

Answer:d

6. Which sytem call can be used by a user process to lock a memory so that it cannot be swapped out?

Answer:memlock()

7. Is page table per process entity?
a) Yes
b) No

Answer:a

8. Among these files which has an ELF format
a) shared objects
b) core
c) executables
d) all of the above

Answer:d