Essential Linux Systems Interview Questions & Answers:

1. UNIX/Linux kernel is?
a) Monolithic
b) micro
c) Exo
d) nano

a) Monolithic

2. Shared memory can be used for?
a) read only operations
b) append
c) read or read write operations
d) write only

c) read or read write operations

3. Section 2 of manpage describes:
a) Commands
b) System calls
c) Function calls
d) Drivers

b) System calls

4. The terminal used by a Daemon process is:
a) any terminal
b) no terminal
b) root terminal
d) system console

b) no terminal

5. 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

a) size of the page

6. ______________ timer is decremented only when the process is executing:
a) ITIMER_REAL
b) ITIMER_VIRTUAL
c) ITIMER_PROF
d) None of the above

b) ITIMER_VIRTUAL

7. Daemon process is a?
a) group leader
b) session leader
c) orphan process
d) all the above

d) all the above

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

little-endian.

9. Which of the following exec call is a system call?
a) execl
b) execlp
c) execve
d) execvp

c) execve

10. System call can be implemented using which assembly instruction(s) on x86 processors?
a) int 080
b) sysenter
c) both a & b
d) None

c) both a & b