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Understanding functional and technical aspects of AWS Certified Database - Specialty Monitoring and Troubleshooting
The following will be discussed in AMAZON DBS-C01 exam dumps:
- Troubleshoot and resolve common database issues
- Determine monitoring and alerting strategies
- Optimize database performance
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Amazon AWS Certified Database - Specialty (DBS-C01) Exam Sample Questions (Q210-Q215):
NEW QUESTION # 210
A company is using an Amazon RDS for MySQL DB instance for its internal applications. A security audit shows that the DB instance is not encrypted at rest. The company's application team needs to encrypt the DB instance.
What should the team do to meet this requirement?
- A. Stop the DB instance and create a snapshot. Copy the snapshot into another encrypted snapshot. Restore the encrypted snapshot to a new encrypted DB instance. Delete the original DB instance, and update the applications to point to the new encrypted DB instance.
- B. Stop the DB instance and create an encrypted snapshot. Restore the encrypted snapshot to a new encrypted DB instance. Delete the original DB instance, and update the applications to point to the new encrypted DB instance.
- C. Stop the DB instance and modify it to enable encryption. Apply this setting immediately without waiting for the next scheduled RDS maintenance window.
- D. Create an encrypted read replica of the DB instance. Promote the read replica to master. Delete the original DB instance, and update the applications to point to the new encrypted DB instance.
Answer: A
NEW QUESTION # 211
A worldwide digital advertising corporation collects browser information in order to provide targeted visitors with contextually relevant pictures, websites, and connections. A single page load may create many events, each of which must be kept separately. A single event may have a maximum size of 200 KB and an average size of 10 KB. Each page load requires a query of the user's browsing history in order to deliver suggestions for targeted advertising. The advertising corporation anticipates daily page views of more than 1 billion from people in the United States, Europe, Hong Kong, and India. The information structure differs according to the event. Additionally, browsing information must be written and read with a very low latency to guarantee that consumers have a positive viewing experience.
Which database solution satisfies these criteria?
- A. Amazon DocumentDB
- B. Amazon DynamoDB global table
- C. Amazon RDS Multi-AZ deployment
- D. Amazon Aurora Global Database
Answer: B
NEW QUESTION # 212
A company has a production environment running on Amazon RDS for SQL Server with an in-house web application as the front end. During the last application maintenance window, new functionality was added to the web application to enhance the reporting capabilities for management. Since the update, the application is slow to respond to some reporting queries.
How should the company identify the source of the problem?
- A. Enable RDS Performance Insights and determine which query is creating the problem. Request changes to the query to address the problem.
- B. Install and configure Amazon CloudWatch Application Insights for Microsoft .NET and Microsoft SQL Server. Use a CloudWatch dashboard to identify the root cause.
- C. Create a support request and work with AWS Support to identify the source of the issue.
- D. Use AWS X-Ray deployed with Amazon RDS to track query system traces.
Answer: A
Explanation:
Explanation
Amazon RDS Performance Insights is a database performance tuning and monitoring feature that helps you quickly assess the load on your database, and determine when and where to take action. Performance Insights allows non-experts to detect performance problems with an easy-to-understand dashboard that visualizes database load. https://aws.amazon.com/rds/performance-insights/
NEW QUESTION # 213
A Database Specialist is migrating an on-premises Microsoft SQL Server application database to Amazon RDS for PostgreSQL using AWS DMS. The application requires minimal downtime when the RDS DB instance goes live.
What change should the Database Specialist make to enable the migration?
- A. Configure the AWS DMS task to generate full logs to allow for ongoing change data capture (CDC)
- B. Configure the AWS DMS connections to allow two-way communication to allow for ongoing change data capture (CDC)
- C. Configure the on-premises application database to act as a source for an AWS DMS full load with ongoing change data capture (CDC)
- D. Configure the AWS DMS replication instance to allow both full load and ongoing change data capture (CDC)
Answer: C
Explanation:
Explanation
"requires minimal downtime when the RDS DB instance goes live" in order to do CDC: "you must first ensure that ARCHIVELOG MODE is on to provide information to LogMiner. AWS DMS uses LogMiner to read information from the archive logs so that AWS DMS can capture changes"
https://docs.aws.amazon.com/dms/latest/sbs/chap-oracle2postgresql.steps.configureoracle.html
"If you want to capture and apply changes (CDC), then you also need the following privileges."
NEW QUESTION # 214
A company is running its line of business application on AWS, which uses Amazon RDS for MySQL at the persistent data store. The company wants to minimize downtime when it migrates the database to Amazon Aurora.
Which migration method should a Database Specialist use?
- A. Take a snapshot of the RDS for MySQL DB instance and create a new Aurora DB cluster with the option to migrate snapshots.
- B. Make a backup of the RDS for MySQL DB instance using the mysqldump utility, create a new Aurora DB cluster, and restore the backup.
- C. Create an Aurora Replica from the RDS for MySQL DB instance and promote the Aurora DB cluster.
- D. Create a clone of the RDS for MySQL DB instance and promote the Aurora DB cluster.
Answer: C
Explanation:
https://aws.amazon.com/blogs/database/best-practices-for-migrating-rds-for-mysql-databases-to-amazon-aurora/
https://docs.aws.amazon.com/AmazonRDS/latest/AuroraUserGuide/AuroraPostgreSQL.Migrating.html#AuroraPostgreSQL.Migrating.RDSPostgreSQL.Replica
NEW QUESTION # 215
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