Oracle 1Z0-820 Online Practice Questions and Exam Preparation

Oracle 1Z0-820 Online Questions & Answers

• Question 41:

  You need to set up a local package repository to serve 75 client systems. Multiple clients will being the package repository concurrently and you need to ensure that the local repository performs very well under this heavy load, especially

  during package intensive operations.

  Which option would ensure the best performance of the repository during package- intensive rations by multiple clients?

  A. Set up multipathing on the package repository server to distribute the network load multiple network interfaces.
  B. Deploy a second instance of the package repository server to run as a read writable mirror.
  C. Deploy a second instance of the package repository server to run as a read-only mirror.
  D. Deploy a second instance of the package repository server to run as a clone of the primary repository server.
  E. Deploy a package repository locally on each client.
  A. Set up multipathing on the package repository server to distribute the network load multiple network interfaces.

• Question 42:

  You need to set up a local package repository to serve 75 client systems. Multiple clients will be accessing the package repository concurrently and you need to ensure that the local repository performs very well under this heavy load, especially during package-intensive operations. Which option would ensure the best performance of the repository during package-intensive operations by multiple clients?

  A. Set up multipathing on the package repository server to distribute the network load across multiple network interfaces.
  B. Deploy a second instance of the package repository server to run as a read-writable mirror.
  C. Deploy a second instance of the package repository server to run as a read-only mirror.
  D. Deploy a second instance of the package repository server to run as a clone of the primary repository server
  E. Deploy a package repository locally on each client.
  C. Deploy a second instance of the package repository server to run as a read-only mirror.

• Question 43:

  Solaris 11 includes a redesigned software packaging model: the Image Packaging System.

  Which three describe advantages of the Image Packaging System over the previous Solaris 10 SVR4 packaging model? (Choose three.)

  A. eliminates patching of the software package
  B. makes the patching process more efficient with less downtime
  C. eliminates OS version upgrade
  D. allows for the installation of the OS without a local DVD or installation server
  E. allows the use of a repository mirror to speed up package operation
  F. allows users to publish their own software package in a software repository
  A. eliminates patching of the software package
  E. allows the use of a repository mirror to speed up package operation
  F. allows users to publish their own software package in a software repository

• Question 44:

  You run the command dlstat show-link -r.

  Select the two correct statements regarding the information displayed in the INTRS column.

  A. No value is listed for virtual network interfaces.
  B. A value of 0 is listed for virtual interfaces and ether stubs.
  C. The number of Interrupts is listed, which indicates network efficiency.
  D. A number equal to the number of transmitted Ethernet frames is listed for physical links.
  E. The number of packets that were interrupted by a collision is listed, which may indicate hardware problems.
  C. The number of Interrupts is listed, which indicates network efficiency.
  E. The number of packets that were interrupted by a collision is listed, which may indicate hardware problems.

  ---

  In this output, the statistics for interrupt (INTRS) are significant. Low interrupt numbers indicate greater efficiency in performance. If the interrupt numbers are high, then you might need to add more resources to the specific link.

  Example:

  # dlstat -r -i 1

  LINK IPKTS RBYTES INTRS POLLS CH<10 CH10-50 CH>50

  e1000g0 101.91K 32.86M 87.56K 14.35K 3.70K 205 5

  nxge1 9.61M 14.47G 5.79M 3.82M 379.98K 85.66K 1.64K

  vnic1 8 336 0 0 0 0 0

  e1000g0 0 0 0 0 0 0 0

  nxge1 82.13K 123.69M 50.00K 32.13K 3.17K 724 24

  vnic1 0 0 0 0 0 0 0

  Note: dlstat show-link [-r [-F] | -t] [-i interval] [-a] [-p] [ -o field[,...]] [-u R|K|M|G|T|P] [link] Display statistics for a link.

  -r

  Display receive-side statistics only. Includes bytes and packets received, hardware and software drops, and so forth.

  List of supported RX fields:

  link

  iusedby

  ibytes

  ipkts

  intrs

  polls

  hdrops: hardware drops

  sdrops: software drops (owing to bandwidth enforcement) ch<10: number of packet chains of length < 10

  ch10-50: number of packet chains of length between 10 and 50 ch>50: number of packet chains of length > 50

  Reference: man dlstat

• Question 45:

  You are setting up a local image packaging System (IPS) package repository on your Oracle Solaris 11 server. The information and specifications that you have are as follows:

  The Oracle Solaris11 repository ISO image has been downloaded into the /repo directory (a zfs file system).

  The current publisher is:

  PUBLISHERTYPESTATUSURI

  solarisoriginonlinehttp://pkg.oracle.com/solaris/release/

  You will be replacing the current publisher with:

  PUBLISHERTYPESTATUSURI

  solarisoriginonlinehttp://solaris.example.com/

  The location of the repository will be /export/IPS. This ZFS file system has already been created.

  Among the steps you will perform is to set the publisher to the local repository by using the pkg set - publisher command. Which six other steps are required to set up the local IPS package repository?

  A. Perform an rsync on the ISO image to copy the files from the ISO image to the /export/IPS file system.
  B. chmod 700 on/export/IPS
  C. Use the svccfg command to set the pkg/inst_root property to export/IPS.
  D. Use the svccfg command to set the pkg.inst_root property to /export/IPS.
  E. Use the svccfg command to set the pkg/readonly property to the application/pkg/server service to true.
  F. Use the svccfg command to set the pkg/readonly property for the application/pkg/server service false.
  G. Refresh the application/pkg/server service with the svcadm refresh command.
  H. Refresh the package repository with the pkgrep refresh command.
  I. Enable the application /pkg/server service.
  J. Run the pkhrepo rebuild command to rebuild the repository catalog.
  A. Perform an rsync on the ISO image to copy the files from the ISO image to the /export/IPS file system.
  B. chmod 700 on/export/IPS
  D. Use the svccfg command to set the pkg.inst_root property to /export/IPS.
  E. Use the svccfg command to set the pkg/readonly property to the application/pkg/server service to true.
  G. Refresh the application/pkg/server service with the svcadm refresh command.
  I. Enable the application /pkg/server service.

  ---

  B: Set the correct permissions.

  Serving a Local Repository Using SMF

  First, create a ZFS file system to hold the repository.

  Next, make a local copy of the IPS repository file.

  Make the contents of the repository file available to the pkg.depotd(1M) server, using the lofiadm command to mount the ISO image.

  4.

  (A) Copy the repository files to the ZFS file system you created. This will increase the performance of repository accesses and avoid the need to remount the .iso image each time the system restarts. (Be sure to use /mnt/repo, not /mnt/ repo/, so that you copy the repo directory and not just the files and subdirectories in the repo directory.)

  # rsync -aP /mnt/repo /export/repo2010_11 You can use the df command to confirm the copy:

  5.

  Once the files are copied, unmount the image and deallocate the block device.

  6.

  Now that your local copy is ready, use the svccfg command to configure the repository server service, specifying the location of your local repository and setting readonly to true: (D)# svccfg -s application/pkg/server setprop pkg/inst_root=/export/repo2010_11/repo (E)# svccfg -s application/pkg/server setprop pkg/readonly=true

  7.

  Start the pkg.depotd repository service:

  (G)

  # svcadm refresh application/pkg/server

  (I)

  # svcadm enable application/pkg/server

  Reference: How I Created Local Package Repositories

  http://www.oracle.com/technetwork/articles/servers-storage-admin/localrepositories- 1377242.html

• Question 46:

  You are using Wireshark or snoop to observe network traffic, by using the observability node /dev/net/bndgeA. The bridge was created with: dladm create-bridge -1 netl -1 net2 bridgeA The captured packets are those__________.

  A. sent, prior to VLAN tag modifications
  B. received, after VLAN tag modifications
  C. received, prior to VLAN tag modifications
  D. sent and received, after VLAN tag modifications
  A. sent, prior to VLAN tag modifications

• Question 47:

  View the Exhibit and review the zpool and ZFS configuration information from your system.

  

  Identify the correct procedure for breaking the /prod_data mirror, removing c4tOdO and c4t2d0, and making the data on c4t0d0 and c4t2d0 accessible under the /dev_data mount point

  A. zpool split pooll pool2 c4t0d0 c4t2d0 zpool import pool2 zfs set mountpomt=/dev_data pool2/prod_data
  B. zpool detach pooh pool2 zpool attach pool2 zfs set mountpoint=/dev_data pool2/prod_data
  C. zfs split pool1/prod_data -n pool2/dev_data zfs set mountpomt=/dev_data pool2/prod_data
  D. zpool split pooh pool2 c4t0d0 c4t2d0 zpool import pool2
  A. zpool split pooll pool2 c4t0d0 c4t2d0 zpool import pool2 zfs set mountpomt=/dev_data pool2/prod_data

• Question 48:

  A local repository is available on this system and you need to enable clients to access this repository via HTTP. The repository information is:

  PUBLISHERTYPESTATUSURI

  solarisoriginonlinehttp://sysA.example.com

  Identify two of the steps that are required to make the local repository on this server available to the client via HTTP.

  A. On the server: set the pkg/inst_root and pkg/readonly properties for the svc:/application/pkg/server:default service and enabled the service
  B. On the server: set the sharefs property on the ZFS file system containing the IPS repository.
  C. On the client: reset the origin for the solaris publisher.
  D. On the client: set the pkg/inst_root and pkg/readonly properties for the svc:/application/server:default service enable the service.
  E. On the client: start the pkg.depotd process.
  A. On the server: set the pkg/inst_root and pkg/readonly properties for the svc:/application/pkg/server:default service and enabled the service
  C. On the client: reset the origin for the solaris publisher.

  ---

  A: Configure the Repository Server Service To enable clients to access the local repository via HTTP, enable the application/pkg/server Service Management Facility (SMF) service. # svccfg -s application/pkg/server setprop pkg/inst_root=/export/repoSolaris11 # svccfg -s application/pkg/server setprop pkg/readonly=true

  Reference: Copying and Creating Oracle Solaris 11 Package Repositories, Configure the Repository Server Service

• Question 49:

  You have Solaris 11 system with a host name of sysA and it uses LDAP as a naming service.

  You have created a flash archive of sysA and you want to migrate this system to an Oracle Solaris11 server, Solaris10 branded zone.

  The zone Status on the Oracle Solaris 11 server is:

  -

  zone10 incomplete/zone/zone1solaris10exc1

  Select the option that will force the non-global zone to prompt you for a host name and name service the first time it is booted.

  A. Use zonecfg to change the zonename before booting the system for the first time
  B. Use the - u option with the zoneadm - z zone10 attach command.
  C. Use the -u option with the zoneadn -z zone10 install command.
  D. Remove the sysidcfg file from the /root directory before booting the non- global zone.
  C. Use the -u option with the zoneadn -z zone10 install command.

  ---

  Oracle Solaris 10 branded zones ?Oracle Solaris 10 Zones provide an Oracle Solaris 10 environment on Oracle Solaris 11. You can migrate an Oracle Solaris 10 system or zone to a solaris10 zone on an Oracle Solaris 11 system in the following ways:

  *

  Create a zone archive and use the archive to create an s10zone on the Oracle Solaris 11 system.

  This option applies in the current scenario.

  Example of command to Install the Oracle Solaris 10 non-global zone. s11sysB# zoneadm -z s10zone install -u -a /pond/s10archive/s10.flar

  *

  Detach the zone from the Oracle Solaris 10 system and attach the zone on the Oracle Solaris 11 zone. The zone is halted and detached from its current host. The zonepath is moved to the target host, where it is attached. Note:

  install [-x nodataset] [brand-specific options]

  A subcommand of the zoneadm.

  Install the specified zone on the system. This subcommand automatically attempts to verify first. It refuses to install if the verify step fails.

  -u uuid-match

  Unique identifier for a zone, as assigned by libuuid(3LIB). If this option is present and the argument is a non-empty string, then the zone matching the UUID is selected instead of the one named by the -z option, if such a zone is present. Reference: Oracle Solaris 11 Information Library, Transitioning an Oracle Solaris 10 Instance to an Oracle Solaris 11 System

• Question 50:

  Review the output from a ZFS file system:

  NAMEPROPERTYVALUESOURCE

  pool1/encryptencryptionaes-256-ccmlocal pool1/encryptkeysourceraw,file///mykeylocal

  You need to recreate the pooM/encrypt file system exactly as it is listed above Which two commands can you use to recreate the pooM/encrypt file system?

  (Choose two.)

  A. pktool genkey keystone=file outkey=/mykey keytype=aes keylen=256
  B. genkey pktool keystore=file outkey=/mykey keytype=aes keylen=256
  C. zfs create -o encryption=aes-256-ccm -o keysource=raw,file://mykey pooll/encrypt
  D. zfs create -o encryption=aes-256-ccm -o keysource=raw,file:///mykey pooM/encrypt
  E. zfs create -o encryption=aes-256-ccm -o keysource=raw,file:///mykey source=local pooll/encrypt
  B. genkey pktool keystore=file outkey=/mykey keytype=aes keylen=256
  C. zfs create -o encryption=aes-256-ccm -o keysource=raw,file://mykey pooll/encrypt