Oracle Oracle Certifications 1Z0-821 Questions & Answers

• Question 231:

  To confirm the IP addresses and netmasks have been correctly configured on the network interfaces, which command(s) should you use?

  A. ipadm show-if

  B. ipadm show-nic

  C. ipadm show-addr

  D. ipadm show-addripadm show-mask

  E. ipadm show-ipipadm show-mask

  F. ipadm show-config

  Correct Answer: C

  Show address information, either for the given addrobj or all the address objects configured on the specified interface, including the address objects that are only in the persistent configuration.

  Example: # ipadm show-addr ADDROBJ TYPE STATE ADDR lo0/v4 static ok 127.0.0.1/8

  lo0/v6 static ok ::1/128

• Question 232:

  You are going to create live zones on you server. Disk space is critical on this server so you need to reduce the amount of disk space required for these zones. Much of the data required for each of these zones is identical, so you want to eliminate the duplicate copies of data and store only data that is unique to each zone.

  Which two options provide a solution for eliminating the duplicate copies of data that is common between all of these zones?

  A. Create the zones by using sparse root zones.

  B. Set the dedup property to on and the dedupratio to at least 1.5 for the zpool.Create a separate ZFS file system for each zone in the zpool.

  C. Put all of the zones in the same ZFS file system and set the dedupratio property for the ZFS file system to at least 1.5.

  D. Put all of the zones in the same ZFS file system and set the dedup property for the file system to on.

  E. Put each zone in a separate ZFS file system within the same zpool. Set the dedup property to on for each ZFS file system.

  Correct Answer: DE

  n Oracle Solaris 11, you can use the deduplication (dedup) 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.

• Question 233:

  Your are troubleshooting network throughput on your server.

  To confirm that the load balancing among aggregated links is functioning properly, you want to examine

  the traffic statistics on the links comprising the aggregation.

  The correct command is ___________.

  A. dlstat - aggr

  B. dlstat show-aggr

  C. dlstat show-link -r

  D. dlstat show-link -aggr

  E. dlstat show-phys -aggr

  Correct Answer: B

  dlstat show-aggr [-r | -t] [-i interval] [-p] [ -o field[, ...]] [-u R|K|M|G|T|P] [link] Display per-port statistics for an aggregation.

• Question 234:

  You suspect a problem with the oponldap package and want to make sure that the files have not be modified or otherwise tampered with.

  Which command would validate all of the files contained in the openldap package and report any problems?

  A. pkgchk openldap

  B. pkginfo openldap

  C. pkg contents openldap

  D. pkg verify openldap

  E. pkg set-property signature-policy verify

  Correct Answer: A

  pkgchk checks the accuracy of installed files or, by using the -l option, displays information about package files. pkgchk checks the integrity of directory structures and files. Discrepancies are written to standard error along with a detailed explanation of the problem.

• Question 235:

  Which three options describe the purpose of the zonep2vchk command?

  A. Used on a Solaris 10 global zone to access the system for problems before migrating that system to a Solaris 10 branded zone.

  B. Used to access a Solaris 10 global zone for problems before migrating that zone to a Solaris 11 global zone

  C. Used to create zonecfg template for a Solaris 10 global zone that that will be migrated to a solaris10 branded zone.

  D. Used to migrate an Oracle Solaris 11 global zone to a non-global zone.

  E. Used to migrate a Solaris 10 global zone to a non-global zone on the same server; the non-global zone can then be migrated to a Solaris 11 server as a Solaris10 branded zone.

  Correct Answer: CDE

  zonep2vchk

  -check a global zone's configuration for physical to virtual migration into non-global zone

  The zonep2vchk utility is used to evaluate a global zone's configuration before the process of physical-tovirtual (p2v) migration into a non-global zone. The p2v process involves archiving a global zone (source), and then installing a non-global zone (target) using that archive Zonep2vchk serves two functions. First, it can be used to report issues on the source which might prevent a successful p2v migration. Second, it can output a template zonecfg, which can be used to assist in configuring the non-global zone target. Zonep2vchk can be executed on a Solaris 10 or later global zone. To execute on Solaris 10, copy the zonep2vchkutility to the Solaris 10 source global zone. When run on Solaris 10, a target release of S11 can be specified, which will check for p2v into a Solaris 10 Branded zone.

• Question 236:

  You have installed software updates to a new boot environment (BE) and have activated that the booting to the new BE, you notice system errors. You want to boot to the last known good configuration. Which option would you use on a SPARC system to boot to the currentBE boot environment?

  A. boot -L currentBE

  B. boot -Z rpool/ROOT/currentBE

  C. boot -a Enter the currentBE dataset name when prompted.

  D. boot rpool/ROOT/currentBE

  E. boot -m currentBE

  F. beadm activate currentBE

  Correct Answer: F

  You can change an inactive boot environment into an active boot environment. Only one boot environment can be active at a time. The newly activated boot environment becomes the default environment upon reboot.

  How to Activate an Existing Boot Environment

  1. Use the following command to activate an existing, inactive boot environment:

  beadm activate beName

  beName is a variable for the name of the boot environment to be activated.

  Note the following specifications.

  beadm activate beName activates a boot environment by setting the bootable pool property, bootfs, to the

  value of the ROOT dataset of the boot environment that is being activated.

  beadm activate sets the newly activated boot environment as the default in the menu.lst file.

  2. Reboot.

  The newly activated boot environment is now the default on the x86 GRUB menu or SPARC boot menu.

• Question 237:

  The storage pool configuration on your server is:

  

  You back up the /pool1/data file system, creating a snapshot and copying that snapshot to tape (/dev/ rmt/0). You perform a full backup on Sunday night and Incremental backups on Monday through Saturday night at 11:00 pm. Each incremental backup will copy only the data that has been modified since the Sunday backup was started.

  On Thursday, at 10:00 am, you had a disk failure. You replaced the disk drive (c4t0d0). You created pool (pool1) on that disk.

  Which option would you select to restore the data in the /pool1/data file system?

  A. zfs create pool1/dataLoad the Monday tape and enter:zfs recv pool1/data < /dev/rmt/0Load the Wednesday tape and enter:zfs recv 璅 pool1/data < /dev/rmt/0

  B. Load the Sunday tape and restore the Sunday snapshot:zfs recv pooll/data < /dev/rmt/0zfs rollback pool1/data@monLoad the Wednesday tape and restore the Wednesday snapshot:zfs recv 璱 pooll/ data < /dev/rmt/0zfs rollback pool1/data@wed

  C. zfs create pooll/dataLoad the Wednesday tape and enter:zfs recv -F pool1/data < /dev/rmt/0

  D. Load the Sunday tape and enter:zfs recv pool1/data < /dev/rmt/0Load the Wednesday tape and enter:* commands missing*

  Correct Answer: D

  First the full backup must be restored. This would be the Sunday backup. Then the last incremental backup

  must be restored. This would be the Wednesday backup. Before restoring the Wednesday incremental file

  system snapshot, the most recent snapshot must first be rolled back.

  By exclusion D) would be best answer even though it is incomplete.

• Question 238:

  To assist in examining and debugging running processes, Solaris 11 has a utility that returns pro arguments and the names and values of environment variables.

  What is the name of this utility?

  A. ppgsz

  B. pargs

  C. pmap D. pgrep

  Correct Answer: B

  The pargs utility examines a target process or process core file and prints arguments, environment variables and values, or the process auxiliary vector.

• Question 239:

  You are installing Oracle Solaris 11 on a SPARC-based system by using the Test Installer. Which three statements are true?

  A. The ROOT user will always be configured as a role.

  B. The root filesystem will always be deployed on ZFS.

  C. The root filesystem will always be located on a local disk.

  D. The network can be configured using DHCP.

  E. The set of packages that will be installed are server based.

  F. You must always create one regular user when installing the system.

  Correct Answer: BDE

• Question 240:

  You are planning group names for a new system. You decide to use a numbering convention that includes the year and month the project began, to form the group number and name for work associated with that project.

  So, for example, a project targeted to begin in January, 2013 would have the number (name):

  201301(Pr20l301)

  What are the two problems with your plan?

  A. Group names may not contain a numeric character

  B. Group names may be no longer than 7 characters.

  C. Group numbers should not be larger than 60000.

  D. Group names should be all lowercase.

  Correct Answer: CD

  C: The Group ID (GID) field contains the group's numerical ID. GIDs can be assigned whole numbers between 100 and 60000.

  D: Group names contain only lowercase characters and numbers.