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Q51. Which three statements are true configuration files and the behavior of module parameters specified in those files, in the /etc/modprobe.d directory?
A. The files may contain options to be passed to a module only when it is a dependency of a module being inserted.
B. The file may contain shell commands to be run instead of inserting a particular module in the kernel.
C. The files may contain options to be passed to a module, only when it is inserted using a modprobe command.
D. The files may contain alias names for modules.
E. The file may contain instructions to ignore certain modules.
F. The files may contain options to be passed to a module only when it is Inserted using an insmod command.
Explanation: modprobe.d - Configuration directory for modprobe Because the modprobe command can add or remove more than one module, due to modules having dependencies, we need a method of specifying what options are to be used with those modules (A). All files underneath the /etc/modprobe.d directory which end with the .conf extension specify those options as required. They can also be used to create convenient aliases (D): alternate names for a module, or they can override the normal modprobe behavior altogether for those with special requirements (such as inserting more than one module).
C: options modulename option... This command allows you to add options to the module modulename (which might be an alias) every time it is inserted into the kernel: whether directly (using modprobemodulename or because the
module being inserted depends on this module.
Q52. Match the following symbolic notations of the file permissions with their numeric values:
- - - S - - - - - - a) 5000
- - - - - - S - - - b) 4100
- - - - - - - - - - tc) 7101
- - - S - - - - - Td) 1001
- - - S - - S - - te) 7040
S - - S r - - - Tf) 2010
A. 1-d, 2-f, 3-b, 4-e, 5-c, 6-a
B. 1-b, 2-f, 3-d, 4-a, 5-c, 6-e
C. 1-f, 2-a, 3-c, 4-b, 5-e, 6-d
D. 1-b, 2-d, 3-f, 4-a, 5-e, 6-c
Q53. Examine the output shown:
[root@FAROUT fs] # rpm –qa | grep preinstall Oracle-rdbms-server-11gR2-preinstall-1.0-6.e16.x86_64
[root@FAROUT fs] # rpm –q1 oracle-rdbms-server-11gR2-preinstall-1.0-6.e16.x86_64 /etc/rc.d/init.d/oracle-rdbms-server-11gR2-preinstall-firstboot /etc/sysconfig/Oracle-rdbms-server-11gR2-preinstall-verify
Which three statements are true about oracle-rdbms-server-11gR2-preinstall-1.0-6.e16.x86_64 rpm?
A. It is a new name for oracle-validated package from Oracle Linux 5 that sets parameters to the same values.
B. It creates the oracle user if not already created, which owns the Grid Infrastructure software should that get installed.
C. It creates the grid user if not already created which owns the grid infrastructure software should that get installed.
D. It modifies kernel parameters in /etc/sysctl.conf.
E. It runs at the first boot after installing the packages to set a parameter indicating that is has run once.
F. It modifies parameters in the /etc/sysconfig/network-scripts directly.
G. It creates the osoper group, if not already created.
Q54. You use the chkconfig command to administer one of the services on your Oracle Linux
[root@FAROUT ~]# chkconfig vncserver off
[root@FAROUT ~] #
No changes have been made to the init script for the service.
Which two statements are true regarding the effects of Issuing this command?
A. The vncserver service is shut down.
B. The vncserver service configuration is disabled only for those run levels for which it is currently enabled.
C. The vncserver service configuration is disabled for run levels 2, 3, 4 and 5.
D. The vncserver service remains in the same state it was in before the command was issued.
E. The vncserver service configuration is disabled for run levels 3 and 5 only.
Q55. Which two statements are true about signal handling in Oracle Linux?
A. The pkill command kills a process by name.
B. A process killed with the default signal always terminates gracefully if it: does not block the kill request.
C. The kill command sends a sigkill (signal 9) by default to the process being killed.
D. The kill command may send a termination signal to more than one process at a time.
E. All signals may be blocked by a process.
Explanation: D: The kill command is used to send a termination signal to the specified
process or group.
Not A: The following example shows the xscreensaver process (2609) which is to be
$ pgrep xscreen
$ kill 2609
Though we use pgrep to find the PID of this process here we could have also used a PID
from the output of top or ps.
Not C: The kill command is used to send a termination signal to the specified process or
group. The default termination signal is a SIGTERM (15) signal.
Not E: When there a stubborn process trapping the kill command and refusing to terminate, the -9 (SIGKILL) signal should be used to kill the process. The -9 signal cannot be trapped by a process and ignored.
Q56. Examine these configuration files:
# cat /etc/auto.master /net-hosts /- auto.direct ro
# cat /etc/auto.direct
/nfs1 o16:/export/share1 /nfs2 -sync o16:/export/share2 /nfs o16:/export/share3
Which mount options will automounter use to mount the filesystems listed in /etc/auto.direct?
A. All three filesystems are mounted read-only, async.
B. /nfs1 and /nfs3 are mounted read-only, async whereas /nfs2 mounted read-write, sync.
C. /nfs1 and /nfs3 are mounted read-only, async whereas /nfs2 mounted read-only, sync.
D. All three filesystems are mounted read-write, sync.
Q57. Examine the command and output shown:
1s: error while loading shared libraries: libselinux.so.1: cannot open shared object file: No such file or directory
No files have been deleted from your system and you want to determine the cause of the error.
Which two commands or utilities can help the root user diagnose this problem?
C. grep libselinux.so.1 /var/log/dmesg
E. grep libselinux.so.1 /var/log/message
To diagnose the problem, use the following commands:
ldd /usr/bin/ls and ldd /cat
strace -o /tmp/ls.strace -f su - root -c ls Explanation: http://www.experts-exchange.com/OS/Unix/Q_25150132.html
Q58. Examine some of the contents of the /boot/grub/grub.com file from an Oracle Linux system:
Default=0 Timeout=5 Splashimage=(hd0, 0)/grub/splash.xpm.gz Hiddenmenu Title Oracle Linux Server (2.6.39-220.127.116.11uek.x86_64) Root (hd0, 0) Kernet /vmlinuz-2.6.39-100.0.12.e16uek.x86_64 ro root=UUIP=a4b6049b-9aa1-44b4-87cf-
aebb17alcdf9 rd_NO_LUKS re_NO_LVM rd_NO_DM.UTF-8
SYSFONT=1atarcycreheb-sun16 KEYBOARDTYPE=PC KEYTABLE=us rhgb quiet
Title Oracle Linux Server (2.6.32-131.0.15.e16.x86_64)
Root (hd0, 0)
Kernel /vmlinuz-2.6.32-131.0.15.e16.x86_64 ro root=UUIS=a4b6049b-9aa1-44b4-87cf-
aebb17a1cdf9 rd_NO_LUKS rd_NO_LVM rd_NO_LVM re_NO_MD rd_NO_DM.UTF-8 SYSFONT=latarcyheb-sun16 KEYBOARDTYPE=PC KEYTABLE=us Crashkernel=auto rhgp quiet numa = off Initrd /initramfs-2.6.32-131.0.15.e16.x86_64.img
Which three statements are true about the behavior and configuration of GRUB on this system?
A. (hd0, 0) represents the first partition on device /dev/hd0.
B. The hiddenmenu directive hides the GRUB menu only for 5 seconds after which it becomes visible again.
C. The root directive specifies an initial root filesystem, allowing access to block device modules to mount the real root filesystem on disk.
D. (hd0, 0) represents the first partition on the first drive detected by the BIOS.
E. The initrd directive specifies the initamfs, an initial root filesystem in RAM, allowing access to block device modules to mount the real root filesystem.
F. Each kernel must have an initramfs that matches the version of the kernel.
G. Because there is an Unbreakable Enterprise Kernel installed, it must be the default
kernel listed as shown by the default=0 directive.
Q59. Which two software packages are prerequisites for enabling the configuration and use of a Network information Service (Nis) client?
Explanation: ypbind finds the server for NIS domains and maintains the NIS binding information. The client (normaly the NIS routines in the standard C library) could get the information over RPC from ypbind or read the binding files.
Q60. You use the host command to find out about host name WAYOUT:
Which two statements are true?
A. Example.com is an authoritative name server.
B. Dns1.example.com is an authoritative name server.
C. Dns2.example.com is a Cache-only name server.
D. Dns2.example.com is an authoritative name sever.
E. Dns1.example.com is a cache-only name server.