Free Practice Questions for Microsoft DP-300 Exam

Enable Automatic tuning at the server level and turn Create Index to On.

Microsoft states that Azure SQL Database automatic tuning can create indexes automatically, verify performance improvement, and roll back changes if performance regresses. Server-level automatic tuning settings are applied to all databases on the server by default, unless a database has its own override.

Azure Portal Method — Recommended for Simulation

Step 1: Open the SQL logical server

Sign in to the Azure portal.

Search for SQL servers.

Open:

sql60152867

Do not open only db1. The task says all databases on sql60152867, so configure this at the server level.

Step 2: Open Automatic tuning

In the SQL server left menu:

Go to Intelligent Performance.

Select Automatic tuning.

Microsoft’s documented path is to open the Azure SQL server in the portal and select Automatic tuning from the menu.

Step 3: Enable automatic index creation

On the Automatic tuning page, configure:

Setting

Value

Create index

On

Drop index

Leave unchanged unless required

Force last good plan

Leave unchanged unless required

The only required setting is:

Create index = On

Do not confuse this with Drop index. The task only asks to ensure indexes are created automatically.

Step 4: Apply the setting

Select Apply or Save.

Wait for the portal confirmation.

The setting is now configured at the SQL logical server level.

Important Database Inheritance Check

This is the part people miss.

Server-level automatic tuning applies to databases that inherit from the server. Microsoft states that individual databases can override server-level automatic tuning settings. Therefore, if the simulation shows any database with custom automatic tuning settings, set that database to Inherit from server or manually set Create index = On for that database.

For each database, the correct inherited state should be:

Automatic tuning = Inherit from server

Create index = Inherited / On

If a database is set to:

Custom

Create index = Off

then the server-level setting might not affect that database. Fix it.

Database-Level T-SQL Method

Use this only if the portal is unavailable or you need to correct a specific database override.

Connect to each database and run:

ALTER DATABASE CURRENT

SET AUTOMATIC_TUNING (

CREATE_INDEX = ON

);

Microsoft documents this exact syntax for enabling the CREATE_INDEX automatic tuning option by T-SQL on an individual Azure SQL Database.

To make an individual database inherit server settings, run:

ALTER DATABASE CURRENT

SET AUTOMATIC_TUNING = INHERIT;

But this must be executed inside each database, not from master as a single server-wide T-SQL command.

Verification with T-SQL

Connect to a database and run:

SELECT

name,

desired_state_desc,

actual_state_desc

FROM sys.database_automatic_tuning_options

WHERE name = ' CREATE_INDEX ' ;

Expected result:

name CREATE_INDEX

desired_state_desc ON or DEFAULT

actual_state_desc ON

If desired_state_desc is DEFAULT, that usually means the database is inheriting the server-level setting. The key result is:

actual_state_desc = ON

SSMS Clarification

SSMS can be used to verify or configure the setting per database using T-SQL, but it is not the best tool for the requirement as written.

Because the task says:

all the databases on sql60152867

the correct primary method is:

Azure portal > SQL server > Automatic tuning > Create index = On

Final Exam-Lab Action

Configure this:

SQL server: sql60152867

Automatic tuning

Create index: On

Apply

Then verify databases are inheriting the server setting or have CREATE_INDEX = ON.

That completes the task.

Requirement: Configure differential backups for Azure SQL Database db1 to run once a day instead of twice a day.

Correct setting: Change Differential backup frequency from 12 Hours to 24 Hours.

Azure SQL Database supports differential backup frequency of either 12 hours or 24 hours. A 12-hour frequency means twice per day; a 24-hour frequency means once per day. Microsoft also notes that 24-hour differential backup frequency can increase restore time compared with 12-hour frequency.

Method 1 — Azure Portal Method

This is the best method for the simulation.

Step 1: Open the Azure SQL logical server

Sign in to the Azure portal.

Search for SQL servers.

Open the logical SQL server that hosts database db1.

Do not start from SQL Server Management Studio for this task. The differential backup frequency is an Azure SQL backup policy setting, not a normal T-SQL database setting.

Step 2: Open the Backups page

In the SQL server left menu, select Backups.

Select the Retention policies tab.

Microsoft’s documented portal path is to go to the logical SQL server, select Backups, then select the Retention policies tab.

Step 3: Select database db1

In the list of databases, locate db1.

Select the checkbox next to db1.

Select Configure policies from the action bar.

Step 4: Change the differential backup frequency

In the policy configuration pane:

Find Differential backup frequency.

Change it from:

12 Hours

to:

24 Hours

Leave the PITR retention period unchanged unless the task specifically tells you to change it.

Select Apply or Save.

Microsoft’s documented option is exactly 12 Hours or 24 hours under Differential backup frequency.

Method 2 — Azure CLI Method

Use this if the simulation provides Cloud Shell.

az sql db str-policy set \

--resource-group < resource-group-name > \

--server < server-name > \

--name db1 \

--retention-days < current-retention-days > \

--diffbackup-hours 24

Example:

az sql db str-policy set \

--resource-group RG1 \

--server sql60152867 \

--name db1 \

--retention-days 7 \

--diffbackup-hours 24

Microsoft documents az sql db str-policy set with --diffbackup-hours 24 for changing active database differential backup frequency. Valid values are 12 or 24 hours.

Be careful: do not guess the retention days blindly in a real environment. In the exam lab, use the existing retention value shown in the portal unless the task also asks you to change retention.

Method 3 — PowerShell Method

Use this if Azure PowerShell is available.

Set-AzSqlDatabaseBackupShortTermRetentionPolicy `

-ResourceGroupName " < resource-group-name > " `

-ServerName " < server-name > " `

-DatabaseName " db1 " `

-RetentionDays < current-retention-days > `

-DiffBackupIntervalInHours 24

Microsoft documents Set-AzSqlDatabaseBackupShortTermRetentionPolicy with -DiffBackupIntervalInHours 24 for setting Azure SQL Database differential backup frequency.

SSMS / T-SQL Clarification

For this task, SSMS is not the right tool to change the setting.

There is no normal ALTER DATABASE T-SQL command in Azure SQL Database to change automated differential backup frequency. Microsoft documents this change through:

Azure portal

Azure CLI

PowerShell

REST API

not SSMS/T-SQL.

You may use SSMS only to confirm the database exists and is accessible, but the backup frequency setting must be changed from Azure management tools.