Oracle 1Z0-821 Online Practice Questions and Exam Preparation

Oracle 1Z0-821 Online Questions & Answers

• Question 11:

  Which modification needs to be made to the Service Management Facility before you publish a new package to the IPS repository?

  A. The pkg.depotd must be disabled.
  B. The pkg/readonly property for the application/pkg/server service must be set to false.
  C. The Pkg/writabie_root property for the application/Pkg/server service must be set to true.
  D. The pkg/image.root property for the application/pkg/server service must be set to the location of the repository.
  D. The pkg/image.root property for the application/pkg/server service must be set to the location of the repository.

  ---

  pkg/image_root

  (astring) The path to the image whose file information will be used as a cache for file data.

• Question 12:

  Consider the following commands:

  

  What is displayed when this sequence of commands is executed using the bash shell?

  A. Hello, world
  B. cat: cannot open file1: No such file or directory Hello, world
  C. cat: cannot open file1: No such file or directory
  D. bash: syntax error near unexpected token '| |'
  E. bash: syntax error broker pipe
  B. cat: cannot open file1: No such file or directory Hello, world

• Question 13:

  You have been asked to troubleshoot the initial configuration of a virtual network connecting two local zones with the outside world. View the exhibit.

  

  The command dladm create-vnic -1 vswitch192.168.1 vnic1 fails with the error dladm: invalid link name `vswitch192.168.1' What is the reason for this error?

  A. The name vswitch192.168.1 is not legal.
  B. The zone must be specified withdladm create-vnic -z zone3 vnic1.
  C. The virtual interface must be specified withdladm create-vnic -z zone3 vnic1.
  D. The virtual interface must be created withipadm create-vnic -1 switch192.168.1.
  E. The virtual switch must be created first withdladm create -etherstub vswitch192.168.1.
  E. The virtual switch must be created first withdladm create -etherstub vswitch192.168.1.

  ---

  There is no data-link named vswitch192.168.

  We need to create an etherstub first.

  See Note and example below for details.

  Note: Create a VNIC in the system's global zone.

  # dladm create-vnic -l data-link vnic-name

  data-link is the name of the interface where the VNIC is to be configured.

  -l link, --link=link

  link can be a physical link or an etherstub.

  vnic-name is the name that you want to give the VNIC.

  For example, to create a VNIC named vnic0 on interface e1000g0, you would type the following:

  # dladm create-vnic -l e1000g0 vnic0

  Example: Creating a Virtual Network Without a Physical NIC

  First, create an etherstub with name stub1:

  # dladm create-etherstub stub1

  Create two VNICs with names hello0 and test1 on the etherstub. This operation implicitly creates a virtual switch connecting hello0 and test1.

  # dladm create-vnic -l stub1 hello0

  # dladm create-vnic -l stub1 test1

• Question 14:

  You need to install the gzip software package on your system. Which command would you use to find the software package in the configured repository?

  A. pkg search gzip
  B. pkg info gzip
  C. pkg contents gzip
  D. pkginfo gzip
  E. yum list gzip
  A. pkg search gzip

  ---

  Use the pkg search command to search for packages whose data matches the specified pattern.

  Like the pkg contents command, the pkg search command examines the contents of packages. While the pkg contents command returns the contents, the pkg search command returns the names of packages that match the query.

• Question 15:

  The line

  set noexec_user_stack= l

  should be added to the /etc/system file to prevent an executable stack while executing user programs. What is the purpose of this?

  A. help prevent core dumps on program errors
  B. help programs to execute more quickly by keeping to their own memory space
  C. log any messages into the stack log
  D. help make buffer-overflow attacks more difficult
  D. help make buffer-overflow attacks more difficult

  ---

  How to Disable Programs From Using Executable Stacks Purpose: Prevent executable stack from overflowing. You must be in the root role.

  Edit the /etc/system file, and add the following line:

  set noexec_user_stack=1

  Reboot the system.

  # reboot

• Question 16:

  View the following information for a software package:

  

  Which command would you use to display this information for a software package that is not currently installed on your system?

  A. pkg list gzip
  B. pkg info -r gzip
  C. pkg search -1 gzip
  D. pkg verify -v gzip
  E. pkg contents gzip
  B. pkg info -r gzip

  ---

  By default, the pkg info command only lists information about installed packages on the system; however, we can use a similar command to look up information about uninstalled packages, as shown in here: Example: Listing Information About an Uninstalled Package # pkg info -r php-52 Name: web/php-52 Summary: PHP Server 5.2 Description: PHP Server 5.2 Category: Development/PHP State: Not Installed Publisher: solaris Version: 5.2.17 Build Release: 5.11 Branch: 0.175.0.0.0.1.530 Packaging Date: Wed Oct 12 14:01:41 2011 Size: 44.47 MB

  FMRI: pkg://solaris/web/[email protected], 5.11-0.175.0.0.0.1.530:20111012T140141Z

  Note: pkg info command displays information about packages in a human-readable form. Multiple FMRI patterns may be specified; with no patterns, display information on all installed packages in the image.

  With -l, use the data available from locally installed packages.

  This is the default.

  With -r, retrieve the data from the repositories of the image's configured publishers. Note that you must specify one or more package patterns in this case.

• Question 17:

  In a fresh installation of Oracle Solaris 11, default datalinks are named with a genetic naming convention, and they increment as you add interfaces. What is the default name?

  A. eth#
  B. net#
  C. el000g#
  D. lo#
  E. nic#
  B. net#

  ---

  When you install this Oracle Solaris release on a system for the first time, Oracle Solaris automatically provides generic link names for all the system's physical network devices. This name assignment uses the net# naming convention, where

  the # is the instance number. This instance number increments for each device, for example, net0, net1, net2, and so on.

  Note:

  Network configuration in Oracle Solaris 11 includes

  * Generic datalink name assignment ?Generic names are automatically assigned to datalinks using the net0, net1, netN naming convention, depending on the total number of network devices that are on the system

• Question 18:

  You enter dladm show-phys, which provides the following output:

  

  You then enter: ipadm create-ip net3 What is the output?

  A. ipadm: cannot; create interface net3: Operation failed.
  B. ipadm: cannot create interface net3: Interface already exists.
  C. ipadm: cannot create interface net3: IP address object not specified.
  D. No_response, The command was successful.
  B. ipadm: cannot create interface net3: Interface already exists.

  ---

  According to the exhibit the interface already exists. The command ipadm create-ip net3 is supposed to create a new interface net3.

• Question 19:

  When you issue the "gzip: zommand not found" message is displayed. You need to install the gzip utility on your system. Which command would you use to check if the gzip utility is available from the default publisher for installation?

  A. pkg info|grep gzip
  B. pkg list SUNWgzip
  C. pkg contents gzip
  D. pkg search gzip
  D. pkg search gzip

  ---

  Searching for Packages

  Use the pkg search command to search for packages whose data matches the specified pattern.

  Like the pkg contents command, the pkg search command examines the contents of packages. While the pkg contents command returns the contents, the pkg search command returns the names of packages that match the query.

  pkg search

  search [-HIaflpr] [-o attribute ...] [-s repo_uri] query Search for matches to the query, and display the results. Which tokens are indexed are action-dependent, but may include content hashes and pathnames.

  Note: pkg is the retrieval client for the image packaging system. With a valid configuration, pkg can be invoked to create locations for packages to be installed, called 'images', and install packages into those images. Packages are published

  by publishers, who may make their packages available at one or more repositories. pkg, then, retrieves packages from a publisher's repository and installs them into an image.

• Question 20:

  You are currently working in both your home directory and the system directory /tmp. You are switch back and forth with full path names. Which pair of cd commands will provide you with a shortcut to switch between these two locations?

  A. cd ~ and cd
  B. cd and cd.
  C. cd ~ and cd
  D. cd * and cd . .
  A. cd ~ and cd

  ---

  In the Bourne Again, C, Korn, TC, and Z shells, the tilde (~) is used as a shortcut for specifying your home directory.

  cd It's the command-line equivalent of the back button (takes you to the previous directory you were in).

  Note:

  To make certain that you are in your home directory, type the cd (change directory) command. This command moves you to your home (default) directory.