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NEW QUESTION 27
A corporation wishes to move a 1 TB Oracle database from its current location to an Amazon Aurora PostgreSQL DB cluster. The database specialist at the firm noticed that the Oracle database stores 100 GB of large binary objects (LOBs) across many tables. The Oracle database supports LOBs up to 500 MB in size and an average of 350 MB. AWS DMS was picked by the Database Specialist to transfer the data with the most replication instances.
How should the database specialist improve the transfer of the database to AWS DMS?

  • A. Create a single task using full LOB mode with a LOB chunk size of 500 MB to migrate the data and LOBs together
  • B. Create two tasks: task1 with LOB tables using full LOB mode with a LOB chunk size of 500 MB and task2 without LOBs
  • C. Create two tasks: task1 with LOB tables using limited LOB mode with a maximum LOB size of 500 MB and task 2 without LOBs
  • D. Create a single task using limited LOB mode with a maximum LOB size of 500 MB to migrate data and LOBs together

Answer: C

Explanation:
Explanation
https://docs.aws.amazon.com/dms/latest/userguide/CHAP_BestPractices.html#CHAP_BestPractices.LOBS,
“AWS DMS migrates LOB data in two phases: 1. AWS DMS creates a new row in the target table and populates the row with all data except the associated LOB value. 2.AWS DMS updates the row in the target table with the LOB data.” This means that we would need two tasks, one per phase and use limited LOB mode for best performance.

 

NEW QUESTION 28
A company has an ecommerce web application with an Amazon RDS for MySQL DB instance. The marketing team has noticed some unexpected updates to the product and pricing information on the website, which is impacting sales targets. The marketing team wants a database specialist to audit future database activity to help identify how and when the changes are being made.
What should the database specialist do to meet these requirements? (Choose two.)

  • A. Create an RDS event subscription to the audit event type.
  • B. Enable auditing of CONNECT and QUERY_DML events.
  • C. SSH to the DB instance and review the database logs.
  • D. Enable Enhanced Monitoring on the DB instance.
  • E. Publish the database logs to Amazon CloudWatch Logs.

Answer: B,E

Explanation:
https://aws.amazon.com/blogs/database/configuring-an-audit-log-to-capture-database-activities-for-amazon-rds-for-mysql-and-amazon-aurora-with-mysql-compatibility/

 

NEW QUESTION 29
A Database Specialist migrated an existing production MySQL database from on-premises to an Amazon RDS for MySQL DB instance. However, after the migration, the database needed to be encrypted at rest using AWS KMS. Due to the size of the database, reloading, the data into an encrypted database would be too time- consuming, so it is not an option.
How should the Database Specialist satisfy this new requirement?

  • A. Restore an unencrypted snapshot into a MySQL RDS DB instance that is encrypted.
  • B. Create an encrypted read replica of the RDS DB instance. Promote it the master.
  • C. Modify the RDS DB instance. Enable the AWS KMS encryption option that leverages the AWS CLI.
  • D. Create a snapshot of the unencrypted RDS DB instance. Create an encrypted copy of the unencrypted snapshot. Restore the encrypted snapshot copy.

Answer: D

Explanation:
Explanation
“However, because you can encrypt a copy of an unencrypted DB snapshot, you can effectively add encryption to an unencrypted DB instance. That is, you can create a snapshot of your DB instance, and then create an encrypted copy of that snapshot. You can then restore a DB instance from the encrypted snapshot, and thus you have an encrypted copy of your original DB instance. For more information, see Copying a Snapshot.” https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/Overview.Encryption.html

 

NEW QUESTION 30
A company is releasing a new mobile game featuring a team play mode. As a group of mobile device users play together, an item containing their statuses is updated in an Amazon DynamoDB table. Periodically, the other users’ devices read the latest statuses of their teammates from the table using the BatchGetltemn operation.
Prior to launch, some testers submitted bug reports claiming that the status data they were seeing in the game was not up-to-date. The developers are unable to replicate this issue and have asked a database specialist for a recommendation.
Which recommendation would resolve this issue?

  • A. Enable a stream on the DynamoDB table and subscribe each device to the stream to ensure all devices receive up-to-date status information.
  • B. Ensure the BatchGetltem operation is called with the ConsistentRead parameter set to true.
  • C. Ensure the BatchGetltem operation is called with the ConsistentRead parameter set to false.
  • D. Ensure the DynamoDB table is configured to be always consistent.

Answer: A

 

NEW QUESTION 31
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