Question 1

shared memory can be used for?

Accepted Answer

A)  read only operations
B)  append
C)  read or read write operations
D)  write only C

Question 2

Sysconf(_SC_PAGE_SIZE) returns?

Accepted Answer

A)  size of the page
B)  max size of the page
C)  min size of the page
D)  paging allowed or not A

Question 3

Among these files which has an ELF format

Accepted Answer

A)  shared objects
B)  core
C)  executables
D)  all of the above D

Question 4

Return value of fork() system call can be:

Accepted Answer

A)  -1,
B)  -1,>0,0

Question 5

Daemon process is a?

Accepted Answer

A)  group leader
B)  session leader
C)  orphan process
D)  all the above

Question 6

The maximum time slice that can be given to a process in Linux (where tick is 10ms) is

Accepted Answer

A)  150ms
B)  10ms
C)  300 ms
D)  600ms

Question 7

Fork returns _____ to parent process on success

Accepted Answer

A)  0
B)  child process id
C)  parent process id
D)  none

Question 8

Solaris real time class priority is

Accepted Answer

A)  0-59
B)  60-99
C)  100-159
D)  160-169

Question 9

Runlevel system command is used for?

Accepted Answer

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 above

Question 10

The process which terminates before the parent process exits becomes

Accepted Answer

A)  zombie
B)  orphan
C)  child
D)  none of the above

Question 11

A system has 512MB of physical memory. Which among the following is not a suitable virtual memory size for this system architecture?

Accepted Answer

A)  512mb
B)  256m
C)  4gb
D)  none of the above

Question 12

Which one can be a real time schedule policy?

Accepted Answer

A)  sched_fifo
B)  sched_spf
C)  sched_other
D)  sched_filo

Question 13

On x86-32 Linux, at which address the user stack resides normally?

Accepted Answer

A)  0x00000000
B)  0x3fff0000
C)  0x7fff0000
D)  0xbfff0000

Question 14

______________ timer is decremented only when the process is executing

Accepted Answer

A)  itimer_real
B)  itimer_virtual
C)  itimer_prof
D)  none of the above

Question 15

UNIX/Linux kernel is?

Accepted Answer

A)  monolithic
B)  micro
C)  exo
D)  nano

Question 16

Is page table per process entity?

Accepted Answer

A) True 
 B)False

Question 17

Section 2 of manpage describes

Accepted Answer

A)  commands
B)  system calls
C)  function calls
D)  drivers

Question 18

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

Accepted Answer

A)  0
B)  3
C)  5
D)  6

Question 19

The terminal used by a Daemon process is:

Accepted Answer

A)  any terminal
B)  no terminal
C)  root terminal
D)  system console

Question 20

Which niceness value among the following indicate most favorable scheduling?

Accepted Answer

A)  0
B)  19
C)  5
D)  -20

Exam 4: Operating System and Process Management