Oracle 1Z0-821 Exam Dumps 2021

NEW QUESTION 1
Which three of the components could be used in a ZFS storage pool, but are not recommended configurations?

• A. A file on a UFS file system
• B. A Veritas Volume Manager (VxVM) volume
• C. A LUN In a hardware RAID array
• D. A disk slice from an SMI labeled disk
• E. A Solaris Volume Manager (SVM) volume
• F. An EFI labeled disk

Answer: ABE

Explanation: A: ZFS also allows you to use UFS files as virtual devices in your storage pool. This feature is aimed primarily at testing and enabling simple experimentation, not for production use. The reason is that any use of files relies on the underlying file system for consistency. If you create a ZFS pool backed by files on a UFS file system, then you are implicitly relying on UFS to guarantee correctness and synchronous semantics.
However, files can be quite useful when you are first trying out ZFS or experimenting with more complicated layouts when not enough physical devices are present. All files must be specified as complete paths and must be at least 64 Mbytes in size.
B, E: You can construct logical devices for ZFS using volumes presented by software-
based volume managers, such as Solaris Volume Manager (SVM) or Veritas Volume Manager (VxVM). However, these configurations are not recommended. While ZFS functions properly on such devices, less-than-optimal performance might be the result.

NEW QUESTION 2
Your server has one zone named dbzone (hat has been configured, but not yet installed). Which command would you use to view all the options that were used to configure this zone?

• A. zoneadm list –icv dbzone
• B. zones tat –c summary dbzone
• C. zonecfg –z dbzone info
• D. zonecfg –icv dbzone info

Answer: C

Explanation: zonecfg info
Display information about the current configuration. If resource-type is specified, displays only information about resources of the relevant type. If any property-name value pairs are specified, displays only information about resources meeting the given criteria. In the resource scope, any arguments are ignored, and info displays information about the resource which is currently being added or modified.
Note: zonecfg –z
zonename. Specify the name of a zone. Zone names are case sensitive. Zone names must begin with an alphanumeric character and can contain alphanumeric characters, the underscore (_) the hyphen (-), and the dot (.). The name global and all names beginning with SUNW are reserved and cannot be used.
Incorrect Answer
A: The zoneadm utility is used to administer system zones. A zone is an application container that is maintained by the operating system runtime.
list option:
Display the name of the current zones, or the specified zone if indicated. B: No such command.
D: no such options zonecfg –icv

NEW QUESTION 3
The crash dump notification on your server is:

Documentation states that there should be two core files for each crash dump in the
/var/crash directory named vmdump.0
Which command should you choose to display theses two files?

• A. savecore -f vmdump.0
• B. dumpadm uncompressed
• C. gunzip vmdump.0
• D. dumpadm -z off

Answer: A

Explanation: Decompress using savecore -f vmdump.0
savecore - save a crash dump of the operating system
-f dumpfile Attempt to save a crash dump from the specified file instead of from the system's current dump device. This option may be useful if the information stored on the dump device has been copied to an on-disk file by means of the dd(1M) command.

NEW QUESTION 4
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 IS
• C. allocated to global zone
• D. unusable due to being inactive
• E. nominated to send/receive IPv4 multicast for its IPMP group

Answer: DE

Explanation: FLAGS
Indicates the status of each underlying interface, which can be one or any combination of the following:
(D) d indicates that the interface is down and therefore unusable.
(E) M indicates that the interface is designated by the system to send and receive IPv6 multicast traffic for the IPMP group.
Note:
i indicates that the INACTIVE flag is set for the interface. Therefore, the interface is not used to send or receive data traffic.
s indicates that the interface is configured to be a standby interface.
m indicates that the interface is designated by the system to send and receive IPv4 multicast traffic for the IPMP group.
b indicates that the interface is designated by the system to receive broadcast traffic for the IPMP group.
h indicates that the interface shares a duplicate physical hardware address with another interface and has been taken offline. The h flag indicates that the interface is unusable.

NEW QUESTION 5
You are attempting to troubleshoot an event that should have made an entry into the messages log. This event happened about two weeks ago. Which file should you look at
first?

• A. /var/adm/messages
• B. /var/adm/messages.0
• C. /var /adm/messagas.1
• D. /var/adm/messages.2
• E. /var/adm/messages.3

Answer: A

Explanation: The /var/adm/messages is the file to which all the messages printed on the console are logged to by the Operating System. This helps to track back check the console messages to troubleshoot any issues on the system.
Syslog daemon also writes to this /var/adm/messages file.
The /var/adm/messages file monitored and managed by newsyslog and its configuration file is /usr/lib/newsyslog.
This script runs as the roots cron job everyday, checks the /var/adm/messages file and copies/moves it to /var/adm/messages.0, 1, 2, 3, 4, 5, 6, 7. In other words, it does the Log Rotation for the /var/adm/messages.
In an event the /var file system is running out of space, these files needs to checked and can be removed (not the actual /var/adm/messages itself) to free up space on the file system.
However, care has to be taken, if you decide to empty the /var/adm/messages itself for any reason. This process is called Truncation.
SOLARIS SYSTEM ADMIN TIPS, /var/adm/messages

NEW QUESTION 6
Select the packet type that identifies members of the group and sends information to all the network interfaces in that group.

• A. Unicast
• B. Multicast
• C. Broadcast
• D. Bayesian
• E. Quality of Service Priority

Answer: B

Explanation: IPv6 defines three address types: unicast
Identifies an interface of an individual node.
multicast
Identifies a group of interfaces, usually on different nodes. Packets that are sent to the multicast address go to all members of the multicast group.
anycast
Identifies a group of interfaces, usually on different nodes. Packets that are sent to the anycast address go to the anycast group member node that is physically closest to the sender.

NEW QUESTION 7
User brian changes the permissions for db_data this command: chmod 4755 db_data
What is true?

• A. db_data now has permissions rwsr-xr-x and can be deleted only by user brian.
• B. db_data now has permissions rwsr-xr-x and, if executed, will inn with the permissions of user brian.
• C. db_data now has permissions rwxr-sr-x and can be deleted only by members of the group owning it.
• D. The permissions for db_data cannot be determined, because the permissions prior to the change have not been specified.
• E. db_data must be an ordinary file, because special permissions cannot be set on a directory.

Answer: C

Explanation: Use the chmod command to change permissions for a file or directory. You must be the owner of a file or directory, or have root access, to change its permissions.
Here we do not know if brian owns db_data. Note:
Permission 7 full
6 read and write
5 read and execute 4 read only
3 write and execute 2 write only
1 execute only
0 none
0 --- no permission 1 --x execute
2 -w- write
3 -wx write and execute 4 r-- read
5 r-x read and execute 6 rw- read and write
7 rwx read, write and execut
Solaris: Solaris Advanced User's Guide

NEW QUESTION 8
Which four can the SMF notification framework be configured to monitor and report?

• A. all service transition states
• B. service dependencies that have stopped or faulted
• C. service configuration modifications
• D. legacy services that have not started
• E. services that have been disabled
• F. service fault management events
• G. processes that have been killed

Answer: AEFG

Explanation: Note 1: State Transition Sets are defined as: to<state>
Set of all transitions that have <state> as the final state of the transition.
form-<state>
Set of all transitions that have <state> as the initial state of the transition.
<state>
Set of all transitions that have <state> as the initial state of the transitional. Set of all transitions. (A)
Valid values of state are maintenance, offline (G), disabled (E), online and degraded. An example of a transitions set definition: maintenance, from-online, to-degraded.
F: In this context, events is a comma separated list of SMF state transition sets or a comma separated list of FMA (Fault Management Architecture) event classes. events cannot have a mix of SMF state transition sets and FMA event classes. For convenience, the tags problem- {diagnosed, updated, repaired, resolved} describe the lifecycle of a problem diagnosed by the FMA subsystem - from initial diagnosis to interim updates and finally problem closure.
Note 2:
SMF allows notification by using SNMP or SMTP of state transitions. It publishes Information Events for state transitions which are consumed by notification daemons like snmp-notify(1M) and smtp-notify(1M). SMF state transitions of disabled services do not generate notifications unless the final state for the transition is disabled and there exist notification parameters for that transition. Notification is not be generated for transitions that have the same initial and final state.

NEW QUESTION 9
Which two SMF milestones can be specified at boot time?

• A. none
• B. network
• C. all
• D. config
• E. unconfig
• F. devices

Answer: AC

Explanation: The milestones that can be specified at boot time are none
single-user multi-user
multi-user-server all

NEW QUESTION 10
You have a ZFS file system named /dbase/oral and you want to guarantee that 10 GB of storage space is available to that dataset for all data, snapshots, and clones.
Which option would you choose?

• A. zfs set refreservation=10g dbase/oral
• B. zfs set quota=10g dbase/oral
• C. zfs set refquota=10g dbase/oral
• D. zfs set reservation=10g dbase/oral

Answer: D

Explanation: A ZFS reservation is an allocation of disk space from the pool that is guaranteed to be available to a dataset. As such, you cannot reserve disk space for a dataset if that space is not currently available in the pool. The total amount of all outstanding, unconsumed reservations cannot exceed the amount of unused disk space in the pool. ZFS reservations can be set and displayed by using the zfs set and zfs get commands. For example:
# zfs set reservation=5G tank/home/bill
# zfs get reservation tank/home/bill NAME PROPERTY VALUE SOURCE
tank/home/bill reservation 5G local

NEW QUESTION 11
When speaking to an Oracle Support Engineer, you are asked to verify the version of the Solaris 11 build currently running on your system.
Which command would display the Solaris 11 build version currently running on your system?

• A. pkg info all
• B. cat /etc/release
• C. cat /etc/update
• D. prtconf | grep –i update
• E. pkg info entire

Answer: B

Explanation: Which Solaris release you are running on your system can be determined using the following command:
cat /etc/release
This will tell you which release you are running and when it was released. The more recent your system, the more info is contained in this file.
Example:
# cat /etc/release
Oracle Solaris 10 8/11 s10s_u10wos_17b SPARC
Copyright (c) 1983, 2011, Oracle and/or its affiliates. All rights reserved. Assembled 23 August 2011

NEW QUESTION 12
The current ZFS configuration on server is:

You need to backup the /data file system while the file system is active.
Select the option that creates a full backup of the /data file system and stores the backup on server in the pool named backup.

• A. Mount -F nfs system: /backup / mntzfs snapshot pool/data@monday>/mnt/Monday
• B. Mount -F nfs systemB: /backup/mntzfs snapshot pool1/data@Mondayzfs clone pool1/data@monday/mnt/Monday
• C. Zfs send pool1/data@Monday | ssh system zfs recv backup/monday
• D. Zfs snapshot pool1/data@Monday | ssh system zfs recv backup/monday

Answer: C

Explanation: http://docs.oracle.com/cd/E23823_01/html/819-5461/ghzvz.html

NEW QUESTION 13
Which five statements describe options available for installing the Oracle Solaris 11operating system using the installation media?

• A. You can perform a text or LiveCD installation locally or over the network.
• B. The text Installer does not install the GNOME deskto
• C. The GNOME desktop package must he added after you have installed the operating system.
• D. The LiveCD Installation cannot be used to install multiple instances of Oracle Solaris.
• E. The LiveCD installer cannot be used if you need to preserve a specific Solaris Volume Table of Contents (VTOC) slice in your current operating system.
• F. The LiveCD Installer is for x86 platforms only.
• G. The GUI installer cannot be used to upgrade your operating system from Solaris 10.
• H. If you are installing Oracle Solaris 11 on an x86-based system that will have more than one operating system installed in it, you cannot partition your disk during the installation process.
• I. The LiveCD installer can be used for SPARC or x86 platforms.

Answer: ABDFH

Explanation: A: If the network is setup to perform automated installations, you can perform a text installation over the network by setting up an install service on the network and selecting a text installation when the client system boots.
B: After a fresh install of Solaris 11 express, only the console mode is activated. To add Gnome, simply do :
$ sudo pkg install slim_install
This will install additional packages that are not installed by default. D: The text installer advantages over the GUI installer include:
* In addition to modifying partitions, the text installer enables you to create and modify VTOC slices within the Solaris partition.
F: How do I upgrade my Solaris 10 or lower systems to Solaris 11?
Unfortunately, you CAN'T. There is no direct upgrade installer or other tool that will allow you to upgrade from earlier releases of Solaris to Solaris 11. This is primarily due to the vast changes in the packaging mechanism in Solaris 10.

NEW QUESTION 14
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

Answer: F

Explanation: 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.

NEW QUESTION 15
The following information is displayed for the svc:/network/ssh service:

Which describes the minimum set of commands to be executed to bring the svc:
/network/ssh: default service back online?

• A. Option A
• B. Option B
• C. Option C
• D. Option D
• E. Option E
• F. Option F
• G. Option G

Answer: C

NEW QUESTION 16
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.

Answer: D

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

NEW QUESTION 17
New features wore added to ZFS in Oracle Solaris11. Your justification to upgrade from Solaris10 to oracle Solaris11 is that it will be possible to take advantage of the enhancements that were made to ZFS.
Identify the three ZFS functions and features that are included in Oracle Solaris 11, but not in Solaris 10.

• A. Encrypted ZFS datasets
• B. Ability for ZFS to detect and remove redundant data from the tile system
• C. Shadow Data Migration
• D. Ability to split a mirrored ZFS storage pool
• E. Ability to use ZFS on the boot drive and boot to a ZFS root file system.
• F. elimination of the swap file system when using ZFS on the root disk

Answer: ABC

Explanation: http://www.oracle.com/technetwork/server-storage/solaris11/overview/solaris-matrix- 1549264.html

NEW QUESTION 18
Examine this command and its output:
$ zfs list -r -t all tank
Name USED AVAIL REFER MOUNTPOINT
tank 2.41G 2.43G 32K /tank
tank/database 2.41G 2.43G 2.41G /tank/database tank/[email protected] 20K - 2.00G –
Next you execute:
# zfs destroy tank/database
Which statement is true about the result of executing this command?

• A. It destroys the tank/database dataset.
• B. It destroys tank/database and all descendant datasets.
• C. It fails because the tank/[email protected] snapshot depends on the tank/database dataset.
• D. It fails because the tank/[email protected] clone depends on the tank/database dataset.
• E. It fails because the tank/database data set is not empty.

Answer: C