Oracle 1Z0-460 Online Practice Questions and Exam Preparation

Oracle 1Z0-460 Online Questions & Answers

• Question 1:

  Which three statements describe the Unbreakable Enterprise Kernel (UEK)?

  A. The UEK contains proprietary Linux Kernel enhancements only available to Oracle Linux.
  B. The UEK is available for x86 (32 bit), x86-64 (64 bit), ARM 32 bit, and ARM 64 bit servers.
  C. Existing applications run unchanged with the UEK in place because all system libraries remain unchanged.
  D. The UEK has more recent kernel enhancements for features like power management than the Red Hat Compatible Kernel.
  E. The UEK has ASMlib included by default.
  A. The UEK contains proprietary Linux Kernel enhancements only available to Oracle Linux.
  C. Existing applications run unchanged with the UEK in place because all system libraries remain unchanged.
  E. The UEK has ASMlib included by default.

  ---

  A: The Unbreakable Enterprise Kernel Release 2 is Oracle's second major release of its heavily tested and optimized operating system kernel for Oracle Linux 5 and Oracle Linux 6.

  C: Oracle claims that the Unbreakable Enterprise Kernel is compatible with RHEL, and Oracle middleware and third-party RHEL-certified applications can be installed and run unchanged on Unbreakable Enterprise Kernel.

  E: Oracle ASMlib is included by default

  Incorrect:

  Not B: Unbreakable Enterprise Kernel is available for x86-64 servers.

• Question 2:

  View the output below.

  As a root user, you run the two ulimit commands as shown in the output below. Why does the second ulimit command fail as shown in the output?

  

  A. The ulimit command cannot be run from the bash shell.
  B. The ulimit command syntax is not correct.
  C. The soft limit value of file description cannot be set greater than the hard limit value.
  D. The soft limit of file descriptions' value should always be less than 1024.
  C. The soft limit value of file description cannot be set greater than the hard limit value.

  ---

  Any user can set a soft limit to any value less than or equal to the hard limit. Any user can lower a hard limit. Only a user with appropriate privileges can raise or remove a hard limit.

  Note:

  *

  limit, ulimit, unlimit set or get limitations on the system resources available to the current shell and its descendents

  *

  Syntax:

  ulimit [- [HS] [c | d | f | n | s | t | v]] limit

  -H

  Displays or sets a hard limit.

  S

  -

  Displays or sets a soft limit.

  Reference: man ulimit

• Question 3:

  The ASMlib on Linux us designed to ___________.

  A. Make managing ASM volume easier.
  B. Make managing ASM volumes easier and provide a performance improvement over ASM volumes alone.
  C. Provide load balancing across multiple volumes.
  D. Allow the user to list contents of the volume from the OS command line.
  B. Make managing ASM volumes easier and provide a performance improvement over ASM volumes alone.

  ---

  ASMLib is an optional support library for the Automatic Storage Management feature of the Oracle Database. ASMLib allows an Oracle Database using ASM more efficient and capable access to the disk groups it is using.

• Question 4:

  Examine the following commands: # groupadd project # mkdir /usr/share/project # chown R root.project /usr/share/project # qpasswd a scott project # qpasswd a foo project # chmod 2775 /usr/share/project

  Based on the commands, which statement is correct?

  A. Any new file created in the /usr/share/project folder by user scott will not be possible for foo to modify it.
  B. All members of the project group need the administrator's help to change the file permission every time users write new files in the /usr/share/project folder.
  C. Files created by all members of the project group in the /usr/share/project folder will get the same group permission as the folder itself.
  D. The chmod command can only take a tree-digit argument.
  A. Any new file created in the /usr/share/project folder by user scott will not be possible for foo to modify it.

  ---

  * A permission of "2755" for a directory means that everyone has read and execute permission, while the file owner and members of the file's group additionally have write permission. And any files or subdirectories created in that directory will

  inherit the parent directory's group id.

  Incorrect:

  Not D: chmod 2775 is a valid command.

• Question 5:

  Which two utilities can you use to manipulate the partition table on Oracle Linux?

  A. fdisk
  B. format
  C. chkdsk
  D. parted
  E. system-config-disk
  A. fdisk
  D. parted

  ---

  A: fdisk - Partition table manipulator for Linux

  D: If you do have a choice of using a disk label/partition tool during installation for example, the parted tool during Oracle Solaris live image installation use a tool that allows alignment by sector. This means you can specify a partition start and end using a sector number.

  Incorrect

  Not C: chkdsk is not a linux command.

• Question 6:

  On your Oracle Linux 6 system, you have to configure the eth0 network interface to 100 MB/sec, half duplex without trying to autonegotiate. Which command will help you configure this requirement?

  A. # ifconfig eth0 speed 100 autoneg off duplex half
  B. # ethtool interface eth0 speed 100 autoneg off duplex half
  C. # ifconfig interface eth0 speed 100 autoneg off duplex half
  D. # ethtool s eth0 speed 100 autoneg off duplex half
  D. # ethtool s eth0 speed 100 autoneg off duplex half

  ---

  When I have a device that is acting up, I tend to run: ethtool ethX, check the Supported link modes, the Link partner advertised link modes and the actual speed and Duplex. If my Supported link mode is set low (say 10/Half for some reason) but my switch supports 1000baseT/Full then I'll use ethtool -s ethX to change my ethernet settings to 1000baseT/Full. Just about anything you see from: ethtool ethX, can be changed with ethtool -S ethX. In this case you would use the following:

  ethtool -S eth0 speed 1000 duplex full autoneg on

• Question 7:

  You have to find the default runlevel of your Oracle Linux system. Which file will help you find this information?

  A. /boot/grub/grub.conf
  B. /etc/inittab
  C. /etc/rc.d/rc.sysinit
  D. /etc/rc.local
  E. /etc/rc.d/init.d
  B. /etc/inittab

  ---

  The default run level is specified in the /etc/inittab file.

• Question 8:

  You want to add a README.txt file in the home directory of every new user that you create by using the useradd command on your Oracle Linux system. In which directory will you place the README.txt file so that it automatically gets copied to the new user's home directory when the user is created?

  A. /home/users
  B. /etc/default/useradd
  C. /etc/default
  D. /etc/skel
  D. /etc/skel

  ---

  -k, --skel SKEL_DIR

  The skeleton directory, which contains files and directories to be copied in the user's home directory, when the home directory is created by useradd. This option is only valid if the -m (or --create-home) option is specified.

  If this option is not set, the skeleton directory is defined by the SKEL variable in /etc/default/useradd or, by default, /etc/skel.

  Note:

  * useradd - create a new user or update default new user information Reference: man useradd

• Question 9:

  What are the two benefits of configuring network interface bonding?

  A. aggregating two or more Network Interfaces (NICs) to act as one logical interface
  B. creating a static address that is bound to one NIC
  C. providing either failover or load-balancing to two or more Network Interfaces (NICs)
  D. binding a network interface to the embedded firewall (IPTables) for port filtering
  A. aggregating two or more Network Interfaces (NICs) to act as one logical interface
  C. providing either failover or load-balancing to two or more Network Interfaces (NICs)

  ---

  Network bonding refers to the combination of network interfaces on one host for redundancy and/or increased throughput.

• Question 10:

  Which two statements are correct about the Oracle ASMLib library?

  A. Oracle ASMLib is an optional support library for the Automatic Storage Management (ASM) feature.
  B. To use ASMLib library, you have to recompile it first for the Unbreakable Enterprise Kernel.
  C. Oracle Automatic Storage management (ASM) requires Oracle ASMLib library to function completely.
  D. Oracle ASMLib kernel driver is included in the Unbreakable Kernel.
  A. Oracle ASMLib is an optional support library for the Automatic Storage Management (ASM) feature.
  D. Oracle ASMLib kernel driver is included in the Unbreakable Kernel.

  ---

  A (not C): ASMLib is an optional support library for the Automatic Storage Management feature of the Oracle Database.

  ASMLib allows an Oracle Database using ASM more efficient and capable access to the disk groups it is using.

  D (not B): The Oracle ASMLib kernel driver is now included in the Unbreakable Enterprise Kernel. No driver package needs to be installed when using this kernel.