Free Oracle 1Z0-821 Exam Practice Questions & Explanations

Last updated on: Oct 16, 2026
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Question 1

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?

Answer Options
Correct Answer: D, E
Explanation

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 2

You are logged in as root to a newly installed Solaris 11 system. You issue the command useradd -d, and then examine the /usr/sadm/defadduser file. This file includes the entry defshell=/bin/sh. Which shell will now be the default for the next account created?

Answer Options
Correct Answer: A
Explanation

Oracle Solaris 11 introduces user environment and command-line argument changes that include the following:

* Shell changes - The default shell, /bin/sh, is now linked to ksh93. The default user shell is the Bourne-again (bash) shell.

* The legacy Bourne shell is available as /usr/sunos/bin/sh.

* The legacy ksh88 is available as /usr/sunos/bin/ksh from the shell/ksh88 package.

* Korn shell compatibility information is available in /usr/share/doc/ksh/COMPATIBILITY.

Question 3

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.

Answer Options
Correct Answer: A, B, C
Question 4

Which files must be edited in order to set up logging of all failed login attempts?

Answer Options
Correct Answer: B
Explanation

This procedure captures in a syslog file all failed login attempts.

1. Set up the /etc/default/login file with the desired values for SYSLOG and SYSLOG_FAILED_LOGINS

Edit the /etc/default/login file to change the entry. Make sure that SYSLOG=YES is uncommented.

2. Create a file with the correct permissions to hold the logging information.

Create the authlog file in the /var/adm directory.

3. Edit the syslog.conf file to log failed password attempts.

Send the failures to the authlog file.

Question 5

View the exhibit to inspect the file system configuration on your server.

View the Exhibit to inspect the file system configuration on your server.

Your department's backup policy is to perform a full backup to a remote system disk on Saturday.

On Sunday through Friday, you are to perform a differential backup to the same remote system disk:

Following your company policy, which option describes a valid procedure for backing up the /data file system to a remote disk named /remote/backup?

Answer Options
Correct Answer: C