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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Optimize database solutions | 10-15% | - Optimize database resources
|
| Topic 2: Monitor database operations | 10-15% | - Monitor and log database activity
|
| Topic 3: Implement a PaaS database solution | 15-20% | - Implement and configure Azure SQL Database
|
| Topic 4: Implement a SQL Server database | 15-20% | - Manage SQL Server databases
|
| Topic 5: Plan and implement data platform resources | 20-25% | - Plan and implement data platform resources based on requirements
|
| Topic 6: Implement secure resources | 20-25% | - Implement a risk mitigation strategy based on requirements
|
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NEW QUESTION # 324
You deploy a database to an Azure SQL Database managed instance.
D18912E1457D5D1DDCBD40AB3BF70D5D
You need to prevent read queries from blocking queries that are trying to write to the database.
Which database option should set?
Answer: D
Explanation:
In SQL Server, you can also minimize locking contention while protecting transactions from dirty reads of uncommitted data modifications using either:
The READ COMMITTED isolation level with the READ_COMMITTED_SNAPSHOT database option set to ON.
The SNAPSHOT isolation level.
If READ_COMMITTED_SNAPSHOT is set to ON (the default on SQL Azure Database), the Database Engine uses row versioning to present each statement with a transactionally consistent snapshot of the data as it existed at the start of the statement. Locks are not used to protect the data from updates by other transactions.
Incorrect Answers:
A: When the PARAMETERIZATION database option is set to SIMPLE, the SQL Server query optimizer may choose to parameterize the queries. This means that any literal values that are contained in a query are substituted with parameters. This process is referred to as simple parameterization. When SIMPLE parameterization is in effect, you cannot control which queries are parameterized and which queries are not.
B: You can specify that all queries in a database be parameterized by setting the PARAMETERIZATION database option to FORCED. This process is referred to as forced parameterization.
C: Delayed transaction durability is accomplished using asynchronous log writes to disk. Transaction log records are kept in a buffer and written to disk when the buffer fills or a buffer flushing event takes place. Delayed transaction durability reduces both latency and contention within the system.
Some of the cases in which you could benefit from using delayed transaction durability are:
You can tolerate some data loss.
You are experiencing a bottleneck on transaction log writes.
Your workloads have a high contention rate.
Reference:
https://docs.microsoft.com/en-us/sql/t-sql/statements/set-transaction-isolation-level-transact-sql
NEW QUESTION # 325
You have an Azure SQL database named db1.
You need to retrieve the resource usage of db1 from the last week.
How should you complete the statement? To answer, select the appropriate options in the answer area.
NOTE: Each correct selection is worth one point.
Answer:
Explanation:
Reference:
https://docs.microsoft.com/en-us/sql/relational-databases/system-catalog-views/sys-resource-stats-azure-sql-database
NEW QUESTION # 326
You have two Azure virtual machines named VM1 and VM2 that run Windows Server 2019. VM1 and VM2 each host a default Microsoft SQL Server 2019 instance. VM1 contains a database named DB1 that is backed up to a file named D:\DB1.bak.
You plan to deploy an Always On availability group that will have the following configurations:
VM1 will host the primary replica of DB1.
VM2 will host a secondary replica of DB1.
You need to prepare the secondary database on VM2 for the availability group.
How should you complete the Transact-SQL statement? To answer, select the appropriate options in the answer area.
Answer:
Explanation:
Reference:
https://docs.microsoft.com/en-us/sql/database-engine/availability-groups/windows/manually-prepare-a-secondary-database-for-an-availability-group-sql-server?view=sql-server-ver15
NEW QUESTION # 327
Hotspot Question
You have an on-premises Microsoft SQL Server 2016 server named Server1 that contains a database named DB1.
You need to perform an online migration of DB1 to an Azure SQL Database managed instance by using Azure Database Migration Service.
How should you configure the backup of DB1? To answer, select the appropriate options in the answer area.
NOTE: Each correct selection is worth one point.
Answer:
Explanation:
Explanation:
Box 1: Full and log backups only
Make sure to take every backup on a separate backup media (backup files). Azure Database Migration Service doesn't support backups that are appended to a single backup file. Take full backup and log backups to separate backup files.
Box 2: WITH CHECKSUM
Azure Database Migration Service uses the backup and restore method to migrate your on- premises databases to SQL Managed Instance. Azure Database Migration Service only supports backups created using checksum.
Incorrect Answers:
NOINIT Indicates that the backup set is appended to the specified media set, preserving existing backup sets. If a media password is defined for the media set, the password must be supplied.
NOINIT is the default.
UNLOAD
Specifies that the tape is automatically rewound and unloaded when the backup is finished.
UNLOAD is the default when a session begins.
Reference:
https://docs.microsoft.com/en-us/azure/dms/known-issues-azure-sql-db-managed-instance-online
NEW QUESTION # 328
You have 40 Azure SQL databases, each for a different customer. All the databases reside on the same Azure
SQL Database server.
You need to ensure that each customer can only connect to and access their respective database.
Which two actions should you perform? Each correct answer presents part of the solution.
NOTE: Each correct selection is worth one point.
Answer: B,D
Explanation:
Section: [none]
Explanation:
Manage database access by adding users to the database, or allowing user access with secure connection
strings.
Database-level firewall rules only apply to individual databases.
Incorrect Answers:
B: Server-level IP firewall rules apply to all databases within the same server.
Reference:
https://docs.microsoft.com/en-us/azure/azure-sql/database/secure-database-tutorial
NEW QUESTION # 329
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