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NEW QUESTION 27
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. Enable Enhanced Monitoring on the DB instance.
  • B. Enable auditing of CONNECT and QUERY_DML events.
  • C. Publish the database logs to Amazon CloudWatch Logs.
  • D. SSH to the DB instance and review the database logs.
  • E. Create an RDS event subscription to the audit event type.

Answer: B,C

Explanation:
Explanation
https://aws.amazon.com/blogs/database/configuring-an-audit-log-to-capture-database-activities-for-amazon-rds-f

 

NEW QUESTION 28
An worldwide gaming company's development team is experimenting with using Amazon DynamoDB to store in-game events for three mobile titles. Maximum concurrent users for the most popular game is 500,000, while the least popular game is 10,000. The typical event is 20 KB in size, while the average user session generates one event each second. Each event is assigned a millisecond time stamp and a globally unique identification.
The lead developer generated a single DynamoDB database with the following structure for the events:
* Partition key: game name
* Sort key: event identifier
* Local secondary index: player identifier
* Event time
In a small-scale development setting, the tests were successful. When the application was deployed to production, however, new events were not being added to the database, and the logs indicated DynamoDB failures with the ItemCollectionSizeLimitExceededException issue code.
Which design modification should a database professional offer to the development team?

  • A. Replace the sort key with a compound value consisting of the player identifier collated with the event time, separated by a dash. Add a local secondary index with the player identifier as the sort key.
  • B. Create two tables. Use the game name as the partition key in both tables. Use the event time as the sort key for the first table. Use the player identifier as the sort key for the second table.
  • C. Use the player identifier as the partition key. Use the event time as the sort key. Add a global secondary index with the game name as the partition key and the event time as the sort key.
  • D. Create one table for each game. Use the player identifier as the partition key. Use the event time as the sort key.

Answer: D

 

NEW QUESTION 29
A large retail company recently migrated its three-tier ecommerce applications to AWS. The company's backend database is hosted on Amazon Aurora PostgreSQL. During peak times, users complain about longer page load times. A database specialist reviewed Amazon RDS Performance Insights and found a spike in IO:XactSync wait events. The SQL attached to the wait events are all single INSERT statements.
How should this issue be resolved?

  • A. Change the Aurora DB cluster storage to Provisioned IOPS (PIOPS).
  • B. Add an Amazon ElastiCache for Redis cluster and change the application to write through.
  • C. Modify the application to commit transactions in batches
  • D. Add a new Aurora Replica to the Aurora DB cluster.

Answer: D

 

NEW QUESTION 30
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