Linux Interview Questions and Answers on Linux Systems for Freshers

1. UNIX/Linux kernel is?

a) Monolithic
b) Micro
c) Exo
d) Nano

Answer: a

2. Monolithic kernel

a) is highly extensiblity
b) has less run time overhead
c) smaller than micro level
d) suitable for real time system

Answer: b

3. Runlevel system command is used for?

a) getting the present and previous runlevel of the system
b) setting the runlevel attribute of the system in the inittab file
c) can be used to restart or reboot the system
d) all of the mentioned

Answer: d

4. Pick the run level to run Linux in multi user mode with networking?

a) 0
b) 3
c) 5
d) 6

Answer: b

5. Section 2 of manpage describes

a) Commands
b) System calls
c) Function calls
d) Drivers

Answer: b

6. System call can be implemented using which assembly instruction(s) on x86 processors?

a) int 0×80
b) sysenter
c) both int 0×80 & sysenter
d) None

Answer: c

7. Which of the following exec call is a system call?

a) execl
b) execlp
c) execve
d) execvp

Answer: c

8. x86 architecture uses big endian or little endian addressing mechanism?

a) little-endian
b) endian
c) big-endian
d) none of the mentioned

Answer: a

9. ______________ timer is decremented only when the process is executing

a) ITIMER_REAL
b) ITIMER_VIRTUAL
c) ITIMER_PROF
d) None of the mentioned

Answer: b

10. Daemon process is a?

a) group leader
b) session leader
c) orphan process
d) all of the mentioned

Answer: d

11. The terminal used by a Daemon process is:

a) any terminal
b) no terminal
b) root terminal
d) system console

Answer: b

12. shared memory can be used for?

a) read only operations
b) append
c) read or read write operations
d) write only

Answer: c

13. Sysconf(_SC_PAGE_SIZE) returns?

a) size of the page
b) max size of the page
c) min size of the page
d) paging allowed or not

Answer: a