Oracle 1Z0-460 Online Practice Questions and Exam Preparation

Oracle 1Z0-460 Online Questions & Answers

• Question 31:

  Which option determines whether a system users NIS, local files, DNS, or a combination as the source of information, and also order of the source?

  A. /etc/resolv.conf
  B. /etc/idap.conf
  C. /etc/nsswitch.conf
  D. /etc/yp.conf
  C. /etc/nsswitch.conf

  ---

  The Name Service Switch (NSS) configuration file, /etc/nsswitch.conf, is used by the GNU C Library to determine the sources from which to obtain name-service information in a range of categories, and in what order. Each category of

  information is identified by a database name. The file is plain ASCII text, with columns separated by spaces or tab characters. The first column specifies the database name. The remaining columns describe the order of sources to query and

  a limited set of actions that can be performed by lookup result.

  Incorrect:

  Not A: In most Unix-like operating systems and others that implement the BIND Domain Name System (DNS) resolver library, the resolv.conf configuration file contains information that

  Not D: /etc/yp.conf - NIS binding configuration file

  Reference: nsswitch.conf

• Question 32:

  Which two conditions will cause OCFS2 to evict a node?

  A. When a node no longer responds to network heartbeat signals from other members of the cluster
  B. When storage array is at 90% capacity
  C. When access to storage is lost
  D. When a node is running at 90% utilization
  A. When a node no longer responds to network heartbeat signals from other members of the cluster
  C. When access to storage is lost

  ---

  A: How does the disk heartbeat work?

  Every node writes every two secs to its block in the heartbeat system file. The block offset is equal to its global node number. So node 0 writes to the first block, node 1 to the second, etc. All the nodes also read the heartbeat sysfile every two

  secs. As long as the timestamp is changing, that node is deemed alive.

• Question 33:

  Which yum command will you use if you want to find out the name of the package that has the /etc/ sysconfig/nfs file?

  A. # yum info /etc/sysconfig/nfs
  B. # yum search /etc/sysconfig/nfs
  C. # yum list installed | grep /etc/sysconfig/nfs
  D. # yum check /etc/sysconfig/nfs
  C. # yum list installed | grep /etc/sysconfig/nfs

  ---

  yum list installed [glob_exp1] [...]

  List the packages specified by args. If an argument does not match the name of an available package, it is assumed to be a shell-style glob and any matches are printed.

  Incorrect:

  Not A:

  info

  Is used to list a description and summary information about available packages

  Not B:

  search

  This is used to find packages when you know something about the package but aren't sure of it's name. By default search will try searching just package names and summaries, but if that "fails" it will then try descriptions and url.

  Not D: check

  Checks the local rpmdb and produces information on any problems it finds.

• Question 34:

  Which two features are available with the Unbreakable kernel R2, but not with the Red Hat Compatible Kernel?

  A. Oracle Clusterware for Linux
  B. Up to 4-petabyte cluster volumes with OCFS2
  C. Ksplice zero downtime patching
  D. Transparent Huge Pages support (that is, 2 MB instead of 4 KB)
  A. Oracle Clusterware for Linux
  B. Up to 4-petabyte cluster volumes with OCFS2

  ---

  Oracle's Unbreakable Enterprise Kernel KEY FEATURES:

  *

  Modern kernel based on 2.6.32, optimized by Oracle for server deployments

  *

  Includes OCFS (Oracle Cluster File System)2 1.6 for clustered volumes

  *

  Includes OFED 1.5.1

  *

  Advanced NUMA support

  *

  New diagnostic and tracing tools, including performance counters

  *

  Complete data integrity checking from application to disk

  *

  Hardware fault management

• Question 35:

  What types of packages are contained in the Oracle Public YUM server?

  A. Base releases of Oracle and RedHat Linux distributions
  B. Base releases of Oracle Linux and extra/updates for Oracle Linux
  C. Red Hat Compatible Kernel, UEK, and Oracle database software
  D. Base release of Oracle Linux
  D. Base release of Oracle Linux

  ---

  The Oracle public yum server offers a free and convenient way to install the latest Oracle Linux packages as well as packages from the Oracle VM installation media via a yum client. You can download the full Oracle Linux and Oracle VM

  installation media via edelivery.oracle.com/linux.

  Note:

  Getting Started

  1.

  Download and Install Oracle Linux

  2.

  Download and copy the appropriate yum configuration file in place, by running the following commands as root: Oracle Linux 4, Update 6 or Newer

  # cd /etc/yum.repos.d # mv Oracle-Base.repo Oracle-Base.repo.disabled # wget http://public-yum.oracle.com/public-yum-el4.repo Oracle Linux 5

  # cd /etc/yum.repos.d # wget http://public-yum.oracle.com/public-yum-el5.repo Oracle Linux 6

  # cd /etc/yum.repos.d # wget http://public-yum.oracle.com/public-yum-ol6.repo Oracle VM 2 # cd /etc/yum.repos.d # wget http://public-yum.oracle.com/public-yum-ovm2.repo

  3.

  Enable the appropriate repository by editing the yum configuration file

  Open the yum configuration file in a text editor Locate the section in the file for the repository you plan to update from, e.g. [el4_u6_base] Change enabled=0 to enabled=1

  4.

  Begin using yum, for example:

  yum list

  yum install firefox

  You may be prompted to confirm the import of the Oracle OSS Group GPG key.

• Question 36:

  You have to collect data by using the OS Watcher tool to help diagnose a performance issue on your Oracle Linux system. You need to collect data every 30 seconds by using this tool and archive this data for a period of three days. Which is the OS Watcher tool option that can be used to collect this data from your system?

  A. # ./startOSWbb.sh t 30 p 3
  B. # ./startOSWbb.sh 30 72
  C. # ./startOSWbb.sh int = 30 days = 3
  D. # ./startOSWbb.sh 30 3
  B. # ./startOSWbb.sh 30 72

  ---

  Example:

  ./startOSWbb.sh 60 24

  collect every 1 minute and keep 24 hours of archive files.

• Question 37:

  You have successfully installed the uptrack tool on servers you will be using ksplice kernel updates. Which two options are correct descriptions of commands you can run?

  A. "uptrack-show": list the active Oracle Ksplice updates in your running kernel.
  B. "uptrack-upgrade": connect to the Uptrack update server, check and apply new updates when available.
  C. "uptrack-upgrade": connect to the Uptrack update server, check and download a new update to the uptrack tool.
  D. "uptrack-show ": list the servers that have the uptrack tool installed using the current key.
  A. "uptrack-show": list the active Oracle Ksplice updates in your running kernel.
  B. "uptrack-upgrade": connect to the Uptrack update server, check and apply new updates when available.

  ---

  A: uptrack-show

  You can see what updates have been installed by running uptrack-show:

  B: uptrack-upgrade

  Ksplice updates are the same security and bugfix updates you would get from your Linux vendor, packaged in a special rebootless form. To apply Ksplice updates, just run uptrack- upgrade.

• Question 38:

  Describe Oracle's Unbreakable Linux Network (ULN).

  A. A complete resource for the Linux community to obtain Linux software for Oracle and RedHat Linux
  B. A forum site to discuss Linux issues that is moderated by Oracle Linux experts
  C. A collection of Linux documentation and sites to download software and updates
  D. A comprehensive resource for Oracle Linux support subscribers that offers access to Linux software patches, updates, and fixes.
  D. A comprehensive resource for Oracle Linux support subscribers that offers access to Linux software patches, updates, and fixes.

  ---

  ULN is a comprehensive resource for Oracle Linux support subscribers, and offers access to Linux software patches, updates and fixes.

• Question 39:

  Which two statements are true about Oracle Clusterware Software?

  A. Oracle Clusterware is a portable software that allows clustering of single servers so that they cooperate as single system.
  B. Oracle Clusterware is a portable cluster software that can be installed on Oracle Engineered Systems.
  C. Oracle Linux Support customers at the Basic or premier level are entitled, at no additional license and support costs, to download and deploy Oracle Clusterware in Linux cluster covered their Linux Support agreement.
  D. Oracle Clusterware is an add-on software that is supported Oracle Linux only.
  A. Oracle Clusterware is a portable software that allows clustering of single servers so that they cooperate as single system.
  C. Oracle Linux Support customers at the Basic or premier level are entitled, at no additional license and support costs, to download and deploy Oracle Clusterware in Linux cluster covered their Linux Support agreement.

  ---

  A: Oracle Clusterware is software that enables servers to operate together as if they are one server. Each server looks like any standalone server. However, each server has additional processes that communicate with each other so the

  separate servers appear as if they are one server to applications and end users.

  C: Oracle Linux support customers at the Basic and Premier support levels can download and deploy Oracle Clusterware at no additional license fee or support cost.

  Incorrect:

  Not D: Oracle ClusterWare services are available for Unix, Linux, and Windows.

• Question 40:

  Identify the Oracle-supported source for obtaining Oracle Linux

  A. From any good Linux distribution
  B. From Oracle's eDelivery software delivery cloud
  C. From Oracle Metalink Support
  D. From Linux vendors such as Red Hat or SUSE
  E. From Anaconda Installer
  B. From Oracle's eDelivery software delivery cloud

  ---

  * Oracle Software Delivery Cloud. Here you can find downloads for the Oracle Linux Operating System, Oracle VM, and Oracle VM Templates for both Linux and Solaris.