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下載AWS Certified Database - Specialty (DBS-C01) Exam考試題庫

NEW QUESTION 23
A financial company is running an Amazon Redshift cluster for one of its data warehouse solutions. The company needs to generate connection logs, user logs, and user activity logs. The company also must make these logs available for future analysis.
Which combination of steps should a database specialist take to meet these requirements? (Choose two.)

• A. Create a new parameter group with the enable_user_activity_logging parameter set to true. Configure the cluster to use the new parameter group.
• B. Edit the database configuration of the cluster by enabling audit logging. Direct the logging to a specified log group in Amazon CloudWatch Logs.
• C. Modify the system table to enable logging for each user.
• D. Edit the database configuration of the cluster by enabling audit logging. Direct the logging to a specified Amazon S3 bucket
• E. Modify the cluster by enabling continuous delivery of AWS CloudTrail logs to Amazon S3.

Answer: A,B

Explanation:
AWS CloudWatch Logs are stored indefinitely and CloudWatch Log Insights is used to analyze the logs and query upon them.
https://docs.aws.amazon.com/AmazonCloudWatch/latest/logs/AnalyzingLogData.html
https://docs.aws.amazon.com/AmazonCloudWatch/latest/logs/WhatIsCloudWatchLogs.html
"Log retention - By default, logs are kept indefinitely and never expire. You can adjust the retention policy for each log group, keeping the indefinite retention, or choosing a retention period between 10 years and one day."
https://docs.aws.amazon.com/redshift/latest/mgmt/db-auditing.html

NEW QUESTION 24
A gaming company has recently acquired a successful iOS game, which is particularly popular during theholiday season. The company has decided to add a leaderboard to the game that uses Amazon DynamoDB.The application load is expected to ramp up over the holiday season.
Which solution will meet these requirements at the lowest cost?

• A. DynamoDB Streams
• B. DynamoDB with on-demand capacity mode
• C. DynamoDB with DynamoDB Accelerator
• D. DynamoDB with provisioned capacity mode with Auto Scaling

Answer: B

NEW QUESTION 25
A financial company has allocated an Amazon RDS MariaDB DB instance with large storage capacity to accommodate migration efforts. Post-migration, the company purged unwanted data from the instance. The company now want to downsize storage to save money. The solution must have the least impact on production and near-zero downtime.
Which solution would meet these requirements?

• A. Create a snapshot of the old databases and restore the snapshot with the required storage
• B. Create a new read replica and make it the primary by terminating the existing primary
• C. Create a new database using native backup and restore
• D. Create a new RDS DB instance with the required storage and move the databases from the old instancesto the new instance using AWS DMS

Answer: A

NEW QUESTION 26
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. Modify the application to commit transactions in batches
• B. Change the Aurora DB cluster storage to Provisioned IOPS (PIOPS).
• C. Add a new Aurora Replica to the Aurora DB cluster.
• D. Add an Amazon ElastiCache for Redis cluster and change the application to write through.

Answer: A

Explanation:
https://docs.aws.amazon.com/AmazonRDS/latest/AuroraUserGuide/AuroraPostgreSQL.Reference.html
"This wait most often arises when there is a very high rate of commit activity on the system. You can sometimes alleviate this wait by modifying applications to commit transactions in batches. "
https://docs.aws.amazon.com/AmazonRDS/latest/AuroraUserGuide/apg-waits.xactsync.html

NEW QUESTION 27
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