Oracle Oracle Certifications 1Z0-820 Questions & Answers

• Question 91:

  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.

  Correct Answer: A

• Question 92:

  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

  Correct Answer: A

• Question 93:

  You need to migrate a UFS file system named /production_ufs to a ZFS file system named / production_ufs. The /production_ufs file system cannot be taken down or be out of production during the migration, and the current /production_ufs file system must remain active until the /ptoduction_zfs file system is copied and ready.

  Which method allows you to meet both requirements?

  1.

  Copy live data from /production_ufs to /production_zfs while /production_ufs is in use.

  2.

  When the copy is complete, /production_zfs will contain an up-to date copy of /production_ufs

  A. Create a snapshot of the UFS file system. Create the new ZFS file system. Use cpio to copy data from the snapshot to the new ZFS file system.

  B. Create a new Boot Environment. Create the ZFS file system. Use lucreate -m to copy data from the Current UFS file system to the new ZFS file system.

  C. Mirror the existing UFS file system by using SVM. After both submissions are in sync, migrate one of the submissions to a ZFS file System by using Live Upgrade.

  D. Create the new ZFS file system by using zfs create import to import data from the existing UFS file system into the new ZFS file system

  E. Create the new zfs file system by using the zfs create -o shadow.

  Correct Answer: E

  Explanation: Migrating Data With ZFS Shadow Migration ZFS shadow migration is a tool you can use to migrate data from an existing file system to a new file system. A shadow file system is created that pulls data from the original source as necessary.

  You can use the shadow migration feature to migrate file systems as follows:

  *

  A local or remote ZFS file system to a target ZFS file system

  *

  A local or remote UFS file system to a target ZFS file system

  Shadow migration is a process that pulls the data to be migrated:

  *

  Create an empty ZFS file system.

  *

  Set the shadow property on an empty ZFS file system, which is the target (or shadow) file system, to

  point to the file system to be migrated.

  For example:

  # zfs create -o shadow=nfs://system/export/home/ufsdata users/home/shadow2

  *

  Data from file system to be migrated is copied over to the shadow file system.

  Reference: Transitioning From Oracle Solaris 10 to Oracle Solaris 11, Migrating Data With ZFS Shadow Migration

• Question 94:

  In an effort to reduce storage space on your server, you would like to eliminate duplicate copies of data in your server's ZFS file systems.

  How do you specify that pool1/data should not contain duplicate data blocks (redundant data) on write operations?

  A. zfs create - o compression=on pool1/data

  B. zpool create -o deduplication =on pool1; zfs create pool1/data

  C. zfs create - o deduplication=on pool1; zfs create pool1/data

  D. zfs create - o dedupratio=2 pool1/data

  E. zfs create - o dedup=on pool1/data

  Correct Answer: E

  Explanation: ZFS Deduplication Property Solaris Express Community Edition, build 129: In this Solaris release, you can use the deduplication property to remove redundant data from your ZFS file systems. If a file system has the dedup property enabled, duplicate data blocks are removed synchronously. The result is that only unique data is stored and common components are shared between files.

  You can enable this property as follows: # zfs set dedup=on tank/home

• Question 95:

  On server A, you enter the following command to add a static route to serverA route -p add -host 192.168.1.101 192.168.1.101 -static What is the purpose of this command?

  A. to temporarily bypass IP Filter rules

  B. to specify an IPMP target IP address to in.mpathd

  C. to specify routing to an adjacent network when in.rdisc is not used

  D. to specify routing to an adjacent network when in.routed is not used

  E. to ensure the IP address for serverB is not flushed from the ARP cache

  F. to optimize link aggregation using a direct connection between two systems

  Correct Answer: B

  Note: # route -p add -host destination-IP gateway-IP -static where destination-IP and gateway-IP are IPv4 addresses of the host to be used as a target.

  For example, you would type the following to specify the target system 192.168.10.137, which is on the same subnet as the interfaces in IPMP group itops0:

  $ route -p add -host 192.168.10.137 192.168.10.137 -static This new route will be automatically configured every time the system is restarted. If you want to define only a temporary route to a target system for probe-based failure detection, then do not use the -p option.

• Question 96:

  This iron is displayed on the desktop of a laptop computer, which is running Oracle Solaris 11.

  

  Which two statements describe the Information conveyed by this Icon?

  A. NWAM is disabled.

  B. NWAM is automatically configuring the network.

  C. The wireless network card is manually configured and operational.

  D. The wireless network card is manually configured but not operational.

  E. The wireless network card is automatically configured and operational.

  F. The wireless network card is automatically configured but not operational.

  Correct Answer: BC

  Explanation: B: The Network Status notification icon is only displayed on the desktop if you are using NWAM to automatically configure your network.

  C: All online (Wireless) Indicates all manually enabled connections in the enabled network profile are online and that the required number of connections in the enabled profile group (if such a group exists) are online. The required number is the same as those described for the All online (Wired) status. Note that at least one online connection is wireless. Reference: Oracle Solaris Administration: Network Interfaces and Network Virtualization , Checking the Status of Your Network Connection

• Question 97:

  Which three methods of delivering a package are provided by the image Package System (iPS)?

  (Choose tnree.)

  A. Publish to a local file-based repository.

  B. Publish as an SVR4 package.

  C. Publish to a remote HTTP-based repository.

  D. Convert to a p5p package archive.

  E. Convert to a SVR4 package archive.

  F. Publish as a tar archive.

  G. Publish as a directory on a USB or DVD drive.

  H. Publish as a Linux RPM package.

  Correct Answer: ABC

• Question 98:

  Which four statements describe the function of the svc://system/install/server;default service? (Choose four.)

  A. it associates an install image with a named install service.

  B. Client systems use the service name to find the correct install image.

  C. Every Oracle Solaris 11 system uses this service to find its IPS publisher and to locate its IPS repository.

  D. A server can have multiple instances of the install/server service, each associated with one boot image.

  E. This service is not present on a server by default.

  F. This service is present on every Oracle Solaris 11 system, but it is not enabled.

  G. A new install/server service cannot be created without DHCP.

  H. An Al install server can have several instances of this service, but can have only one install service running at a time.

  Correct Answer: EFGH

• Question 99:

  Which three statements accurately describe the Automated Installation (Al) client? (Choose three.)

  A. if the Al client does not match any cnteria to use a custom manifest or script, the default manifest is used.

  B. if the A! client does not match any criteria to use a custom manifest or script, the automated installation aborts.

  C. Any manifest or script in a service can be designated to be the default for that service.

  D. Only the default.xml file is used as the default Al client manifest.

  E. if a client system does not use any SC profile, then an interactive tool opens on that client at first boot after that client installation to complete the configuration of that client.

  F. If a client system does not use any SC profile, then the install server will use the default SC profile.

  Correct Answer: ACE

• Question 100:

  You want to deploy oracle Solaris 11 with the automated installer (AI). You need to make sure that your server and network meet the requirements for using AI.

  Choose the three options that describe; the requirements for using AI.

  A. You can create only one manifest per install service. If you need more than one manifest, create multiple install services.

  B. If two client machines have different architectures and need to be installed with the same version of the Oracle Solaris 11 OS, then create two AI manifests and a single Install service.

  C. You need a separate install service for each different client architecture that you plan to install, and for each different version of the Oracle Solaris 11 OS that you plan to install on client systems.

  D. If two client machines have different architectures and need to be installed with different versions of the Oracle Solaris 11 OS, then create two AI manifests and two install services.

  E. The install server needs to be able to access an Oracle Solaris Image Packaging System (IPS) software package repository; the clients do not.

  F. The install server can be either an x86 machine or a SPARC machine.

  Correct Answer: BEF

  Explanation: B:

  Note: You can create custom AI manifests for particular clients. Create a custom XML AI manifest file. This method is best suited to an environment where few systems require custom provisioning. Most systems to be installed have identical or similar hardware and will be provisioned identically.

  Write a script that dynamically creates an AI manifest for each client at installation time. Use this method to create a custom installation for each client, based on client characteristics discovered at installation time.

  E: AI Server Software Requirements include

  Software package repository

  Ensure that the install server can access an IPS software package repository. AI requires the install/

  installadm package.

  F: Install Server Requirements

  Any system that meets these requirements can be used as an AI install server, including laptops,

  desktops, virtual machines, and enterprise servers. The install server can be either an x86 machine or a

  SPARC machine. An x86 install server can install both SPARC and x86 clients, and a SPARC install

  server can install both SPARC and x86 clients.

  Note: To install clients over the network, AI requires a separate system to be an install server. On the install server, create an AI install service to provide a net image and instructions for installing the Oracle Solaris 11 OS on different clients.