Linux Interview Questions and Answers – Linux Systems

1.

UNIX/Linux kernel is?

   A.) Monolithic
   B.) Micro
   C.) Exo
   D.) Nano

Answer: Option 'A'

Monolithic

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: Option 'B'

has less run time overhead

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 these

Answer: Option 'D'

all of these

4.

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

   A.) 0
   B.) 3
   C.) 5
   D.) 6

Answer: Option 'B'

3

5.

Section 2 of manpage describes

   A.) Commands
   B.) System calls
   C.) Function calls
   D.) Drivers

Answer: Option 'B'

System calls

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: Option 'C'

both int 0×80 & sysenter

7.

Which of the following exec call is a system call?

   A.) execl
   B.) execlp
   C.) execve
   D.) execvp

Answer: Option 'C'

execve

8.

x86 architecture uses big endian or little endian addressing mechanism?

   A.) little-endian
   B.) endian
   C.) big-endian
   D.) none of these

Answer: Option 'A'

little-endian

9.

______________ timer is decremented only when the process is executing

   A.) ITIMER_REAL
   B.) ITIMER_VIRTUAL
   C.) ITIMER_PROF
   D.) None of these

Answer: Option 'B'

ITIMER_VIRTUAL

10.

Daemon process is a?

   A.) group leader
   B.) session leader
   C.) orphan process
   D.)

all of these

Answer: Option 'D'

all of these


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