Oracle Oracle Certifications 1Z0-820 Questions & Answers

• Question 51:

  Review the ZFS dataset output that is displayed on your system:

  

  Which four correctly describe the output?

  A. /data/file4 has been added.

  B. The link /data/file3 has been added.

  C. /data/file3 has been renamed to /data/file13.

  D. /data/file4 has been modified and is now larger.

  E. /data/file1 has been deleted.

  F. /data/file1 has been modified and is now smaller.

  G. /data/file5 has been modified.

  H. /data/file3 (a link) has been removed.

  Correct Answer: ACEG

  Explanation: A: + Indicates the file/directory was added in the later dataset

  C: R Indicates the file/directory was renamed in the later dataset

  E: - Indicates the file/directory was removed in the later dataset

  G: M Indicates the file/directory was modified in the later dataset

  Note: Identifying ZFS Snapshot Differences (zfs diff) You can determine ZFS snapshot differences by

  using the zfs diff command.

  The following table summarizes the file or directory changes that are identified by the zfs diff command.

  File or Directory Change Identifier

  *

  File or directory is modified or file or directory link changed M

  *

  File or directory is present in the older snapshot but not in the newer snapshot -

  *

  File or directory is present in the newer snapshot but not in the older snapshot +

  *

  File or directory is renamed R

• Question 52:

  Which three installation options allow for a "hands-free" and "unattended" installation of the Oracle Solaris 11 environment?

  (Choose three.)

  A. Jumpstart

  B. LiveCD

  C. a text installation over the network

  D. an Automated Installation performed on an x86 client

  E. an Automated Installation using media from a local DVD or USB drive

  F. an Automated Installation using a networked repository

  Correct Answer: DEF

• Question 53:

  When setting up Automated Installer (Al) clients, an interactive tool can be used to generate a custom system configuration profile. The profile will specify the time zone, date and time, user and root accounts, and name services used for an Al client installation. This interactive tool will prompt you to enter the client information and an SC profile (XML file) will be created.

  Which interactive tool can be used to generate this custom configuration?

  A. sys-unconfig

  B. installadm set-criteria

  C. sysconfig create-profile

  D. installadm create-profile

  Correct Answer: C

• Question 54:

  You display the IP Interface information with ipmpstat - i

  Which two characteristics are indicated by characters that may be included in the FLAGS column?

  A. default route

  B. IP forwarding enabled

  C. allocated to global zone

  D. unusable due to being inactive

  E. nominated to send/receive IPv4 multicast for its IPMP group

  Correct Answer: DE

  Explanation: The ipmpstat command concisely displays information about the IPMP subsystem. It supports

  five different output modes, each of which provides a different view of the IPMP subsystem (address,

  group, interface, probe, and target), described below.

  -i

  Display IP interface information ("interface" output mode).

  Interface Mode

  Interface mode displays the state of all IP interfaces that are tracked by in.mpathd on the system. The

  following output field is one of the supported:

  FLAGS

  Assorted information about the IP interface:

  i

  (D)

  Unusable due to being INACTIVE.

  s

  Marked STANDBY.

  m

  (E)

  Nominated to send/receive IPv4 multicast for its IPMP group.

  b

  Nominated to send/receive IPv4 broadcast for its IPMP group.

  M

  Nominated to send/receive IPv6 multicast for its IPMP group.

  d

  Unusable due to being down.

  h

  Unusable due to being brought OFFLINE by in.mpathd because of a duplicate hardware address.

  Reference: man ipmpstat

• Question 55:

  Identify the two advantages offered by the Automated Installer compared to JumpStait (Choose two.)

  A. DHCP is no longer required.

  B. ZFS clones of the boot environment simplify upgrades.

  C. Greater flexibility is offered by WAN-compatible networking protocols.

  D. Complexity of post-installation scripts required for customizing installations is simplified.

  E. ZFS file systems support installation of additional disk storage during installation if required.

  Correct Answer: AB

• Question 56:

  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.

  Correct Answer: C

  Explanation: 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 57:

  You upgraded your server to Oracle Solaris 11 and you imported zpool (pool1) that was created in Solaris

  10. You need to create an encrypted ZFS file system in pool1, but first you need to make sure that your server supports ZFS encryption.

  Which four statements are true for support of ZFS encryption?

  A. The encrypted file system must have been created in Oracle Solaris11. To encrypt a ZFS file system from a previous version of Solaris, upgrade the zpool and create a new encrypted ZFS file system into the encrypted ZFS file system.

  B. If you plan to create an encrypted file system in an existing zpool, the zpool must be upgraded to ZFS version 30.

  C. ZFS encryption is integrated with the ZFS command set and no additional packages need to be installed.

  D. ZFS encryption requires that the ZFS Dataset Encryption package be installed.

  E. If you plan to create an encrypted file system in an existing zpool, the pool must be upgraded to ZFS version 21, minimum.

  F. Encryption is supported at the pool or dataset (file system) level.

  G. Encryption is supported at the pool level only for every file system in the pool will be encrypted.

  H. You cannot create an encrypted file system in a zpool that was created prior to oracle Solaris11. Create a new zpool in Solaris11, create an encrypted ZFS file system in the new zpool, and move or copy the data from the existing file system into the new encrypted file system.

  Correct Answer: ABCF

  Explanation: A (not H): You can use your existing storage pools as long as they are upgraded. You have the flexibility of encrypting specific file systems. B(not E): Can I enable encryption on an existing pool? Yes, the pool must be upgraded to pool version 30 to allow encrypted ZFS file systems and volumes. C(not D): ZFS encryption is integrated with the ZFS command set. Like other ZFS operations, encryption operations such as key changes and rekey are performed online. F (not G): Encryption is the process in which data is encoded for privacy and a key is needed by the data owner to access the encoded data. You can set an encryption policy when a ZFS dataset is created, but the policy cannot be changed.

  Reference: Oracle Solaris ZFS Administration Guide, Encrypting ZFS File Systems

• Question 58:

  You need to remove the gzip software package.

  Before you remove the package, you want to create a backup of the operating environment.

  Which IPS command should you use?

  A. Use the pkg remove command with the -require-backup-be option

  B. Use the beadm create command to create a new boot environment Use the pkg remove command to remove the gzip package from the current boot environment.

  C. Use the luucreate command to create a new boot environment. Use the pkgrm command to remove the gzip package from the current boot environment

  D. Use the pkg unmstall command with the -backup-be-name option

  Correct Answer: B

• Question 59:

  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

  Correct Answer: AEF

• Question 60:

  After installing the OS, you boot the system and notice that the syslogd daemon is not accepting messages from remote systems.

  Which two options should you select to modify the syslogd daemon configuration so that it accepts syslog messages from remote systems? (Choose two.)

  A. svccfg -ssvc/system/system-log setprop start/exec="syslogd -t" Restart the syslogd daemon

  B. Set the following parameter in the /etc/syslogd.conf file: LOG_FROM_REMOTE=YES Restart the syslogd daemon

  C. svcadm enable svc:/system/system-log/config/log_from_remote Restart the syslogd daemon.

  D. svccfg -s svc /system/system-loq setprop config/log_from_remote=true Restart the syslogd daemon.

  E. Set the following parameter in the /etc/default/syslogd file: LOG_FROM_REMOTE=YES Restart the syslogd daemon

  Correct Answer: DE