Top Linux Os Systems Objective Questions
Q – 1 UNIX/Linux kernel is?
a) Monolithic
b) micro
c) Exo
d) nano
Ans- a) Monolithic
Q – 2 Shared memory can be used for?
a) read only operations
b) append
c) read or read write operations
d) write only
Ans- c) read or read write operations
Q – 3 Section 2 of manpage describes:
a) Commands
b) System calls
c) Function calls
d) Drivers
Ans- b) System calls
Q – 4 The terminal used by a Daemon process is:
a) any terminal
b) no terminal
b) root terminal
d) system console
Ans- b) no terminal
Q – 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
Ans- a) size of the page
Q – 6 ______________ timer is decremented only when the process is executing:
a) ITIMER_REAL
b) ITIMER_VIRTUAL
c) ITIMER_PROF
d) None of the above
Ans- b) ITIMER_VIRTUAL
Q – 7 Daemon process is a?
a) group leader
b) session leader
c) orphan process
d) all the above
Ans- d) all the above
Q – 8 x86 architecture uses big endian or little endian addressing mechanism?
Ans- little-endian.
Q – 9 Which of the following exec call is a system call?
a) execl
b) execlp
c) execve
d) execvp
Ans- c) execve
Q – 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
Ans- c) both a & b
Q – 11 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 above
Ans- d) all of the above
Q – 12 Tell me which command is used to mount file system read only.
a) mount -a
b) mount -v
c) mount -f
d) mount -r
Ans- d) mount -r
Q – 13 Pick the run level to run Linux in multi user mode with networking?
a) 0
b) 3
c) 5
d) 6
Ans- b) 3
Q – 14 Monolithic kernel:
a) is highly extensiblity
b) has less run time overhead
c) smaller than micro level
d) Suitable for real time system
Ans- b) has less run time overhead
Q – 15 Tell me which among the following allows fast file system recovery?
a) Ext2
b) Journaling
c) Caching
d) Sysfs
Ans- b) Journaling
Q – 16 Tell me which file contains the filesystems to be automatically mounted during boot?
a) /etc/mount
b) /etc/fstab
c) /etc/inittab
d) /etc/boot
Ans- b) /etc/fstab
Q – 17 Explain ____ is a directory (which should exist), on which to mount the file system?
a) Root
b) Boot
c) Mount-point
d) Partition
Ans- c) Mount-point
Q – 18 Tell me which command is used to check filesystem usage in a system?
a) mount
b) df
c) du
d) dd
Ans- b) df
Q – 19 Tell me which filesystem can be used to change certain kernel parameters at runtime using sysctl command?
a) Ext3
b) Sysfs
c) Ext4
d) Procfs
Ans- d) Procfs
Q – 20 Which filesystem for CDROM is:
a) Ext2
b) Ext3
c) Isofs
d) Procfs
Ans- c) Isofs
Q – 21 Tell me which file system has journaling capability?
a) Ext2
b) Ext4
c) Isofs
d) Procfs
Ans- b) Ext4