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Amazon AWS Certified Database - Specialty (DBS-C01) Exam Sample Questions (Q130-Q135):
NEW QUESTION # 130
A company is running Amazon RDS for MySQL for its workloads. There is downtime when AWS operating system patches are applied during the Amazon RDS-specified maintenance window.
What is the MOST cost-effective action that should be taken to avoid downtime?
- A. Enable an Amazon RDS for MySQL Multi-AZ configuration
- B. Enable a read replicas and direct read traffic to it when Amazon RDS is down
- C. Migrate the workloads from Amazon RDS for MySQL to Amazon DynamoDB
- D. Enable cross-Region read replicas and direct read traffic to then when Amazon RDS is down
Answer: A
Explanation:
https://aws.amazon.com/premiumsupport/knowledge-center/rds-required-maintenance/ To minimize downtime, modify the Amazon RDS DB instance to a Multi-AZ deployment. For Multi-AZ deployments, OS maintenance is applied to the secondary instance first, then the instance fails over, and then the primary instance is updated. The downtime is during failover. For more information, see Maintenance for Multi-AZ Deployments. https://aws.amazon.com/rds/faqs/ The availability benefits of Multi-AZ also extend to planned maintenance. For example, with automated backups, I/O activity is no longer suspended on your primary during your preferred backup window, since backups are taken from the standby. In the case of patching or DB instance class scaling, these operations occur first on the standby, prior to automatic fail over. As a result, your availability impact is limited to the time required for automatic failover to complete.
NEW QUESTION # 131
A company developed an AWS CloudFormation template used to create all new Amazon DynamoDB tables in its AWS account. The template configures provisioned throughput capacity using hard-coded values. The company wants to change the template so that the tables it creates in the future have independently configurable read and write capacity units assigned.
Which solution will enable this change?
- A. Add values for two Number parameters, rcuCount and wcuCount, to the template. Replace the hard-coded values with calls to the Ref intrinsic function, referencing the new parameters.
- B. Add values for the rcuCount and wcuCount parameters as outputs of the template. Configure DynamoDB to provision throughput capacity using the stack outputs.
- C. Add values for the rcuCount and wcuCount parameters to the Mappings section of the template. Replace the hard-coded values with calls to the Ref intrinsic function, referencing the new parameters.
- D. Add values for the rcuCount and wcuCount parameters to the Mappings section of the template.
Configure DynamoDB to provision throughput capacity using the stack's mappings.
Answer: A
Explanation:
Explanation
Input parameter and FindInMap You can use an input parameter with the Fn::FindInMap function to refer to a specific value in a map. For example, suppose you have a list of regions and environment types that map to a specific AMI ID. You can select the AMI ID that your stack uses by using an input parameter (EnvironmentType). To determine the region, use the AWS::Region pseudo parameter, which gets the AWS Region in which you create the stack.
https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/parameters-section-structure.html
NEW QUESTION # 132
A company uses Amazon Aurora for secure financial transactions. The data must always be encrypted at rest and in transit to meet compliance requirements.
Which combination of actions should a database specialist take to meet these requirements? (Choose two.)
- A. Use AWS Key Management Service (AWS KMS) to secure the in-transit connection between the financial application and the Aurora DB cluster.
- B. Use SSL/TLS to secure the in-transit connection between the financial application and the Aurora DB cluster.
- C. Take a snapshot of the Aurora DB cluster and encrypt the snapshot using an AWS Key Management Service (AWS KMS) encryption key. Restore the snapshot to a new DB cluster and update the financial application database endpoints.
- D. Create an Aurora Replica with encryption enabled using AWS Key Management Service (AWS KMS).
Then promote the replica to master. - E. Modify the existing Aurora DB cluster and enable encryption using an AWS Key Management Service (AWS KMS) encryption key. Apply the changes immediately.
Answer: B,D
Explanation:
Explanation
https://docs.aws.amazon.com/AmazonRDS/latest/AuroraUserGuide/aurora-replicas-adding.html
NEW QUESTION # 133
A Database Specialist is setting up a new Amazon Aurora DB cluster with one primary instance and three Aurora Replicas for a highly intensive, business-critical application. The Aurora DB cluster has one medium- sized primary instance, one large-sized replica, and two medium sized replicas. The Database Specialist did not assign a promotion tier to the replicas.
In the event of a primary failure, what will occur?
- A. Aurora will not promote an Aurora Replica
- B. Aurora will promote an Aurora Replica that is of the same size as the primary instance
- C. Aurora will promote the largest-sized Aurora Replica
- D. Aurora will promote an arbitrary Aurora Replica
Answer: C
Explanation:
Priority: If you don't select a value, the default is tier-1. This priority determines the order in which Aurora
https://docs.amazonaws.cn/en_us/AmazonRDS/latest/AuroraUserGuide/aurora-replicas-adding.html More than one Aurora Replica can share the same priority, resulting in promotion tiers. If two or more Aurora Replicas share the same priority, then Amazon RDS promotes the replica that is largest in size. If two or more Aurora Replicas share the same priority and size, then Amazon RDS promotes an arbitrary replica in the same promotion tier.
https://docs.aws.amazon.com/AmazonRDS/latest/AuroraUserGuide/Aurora.Managing.Backups.html#Aurora.Managing.FaultTolerance If two or more Aurora Replicas share the same priority, then Amazon RDS promotes the replica that is largest in size. If two or more Aurora Replicas share the same priority and size, then Amazon RDS promotes an arbitrary replica in the same promotion tier. https://docs.aws.amazon.com/AmazonRDS/latest/AuroraUserGuide/Concepts.AuroraHighAvailability.html
NEW QUESTION # 134
A company wants to migrate its Microsoft SQL Server Enterprise Edition database instance from on-premises to AWS. A deep review is performed and the AWS Schema Conversion Tool (AWS SCT) provides options for running this workload on Amazon RDS for SQL Server Enterprise Edition, Amazon RDS for SQL Server Standard Edition, Amazon Aurora MySQL, and Amazon Aurora PostgreSQL. The company does not want to use its own SQL server license and does not want to change from Microsoft SQL Server.
What is the MOST cost-effective and operationally efficient solution?
- A. Run SQL Server Standard Edition on Amazon RDS.
- B. Run SQL Server Enterprise Edition on Amazon EC2.
- C. Run Amazon Aurora MySQL leveraging SQL Server on Linux compatibility libraries.
- D. Run SQL Server Enterprise Edition on Amazon RDS.
Answer: A
NEW QUESTION # 135
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