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Amazon DBS-C01 Exam

AWS Certified Database - Specialty

Total Questions: 322

Last Updated : 20-04-2024

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Amazon DBS-C01 Questions

Q1.

A company has an application that uses an Amazon DynamoDB table as its data store. During normal business days, the throughput requirements from the application are uniform and consist of 5 standard write calls per second to the DynamoDB table. Each write call has 2 KB of data.

For 1 hour each day, the company runs an additional automated job on the DynamoDB table that makes 20 write requests per second. No other application writes to the DynamoDB table. The DynamoDB table does not have to meet any additional capacity requirements.

How should a database specialist configure the DynamoDB table's capacity to meet these requirements MOST cost-effectively?

AUse DynamoDB provisioned capacity with 5 WCUs and auto scaling.

BUse DynamoDB provisioned capacity with 5 WCUs and a write-through cache that DynamoDB Accelerator (DAX) provides.

CUse DynamoDB provisioned capacity with 10 WCUs and auto scaling.

DUse DynamoDB provisioned capacity with 10 WCUs and no auto scaling.

Q2.

A company with 500,000 employees needs to supply its employee list to an application used by human resources. Every 30 minutes, the data is exported using the LDAP service to load into a new Amazon DynamoDB table. The data model has a base table with Employee ID for the partition key and a global secondary index with Organization ID as the partition key.

While importing the data, a database specialist receives ProvisionedThroughputExceededException errors. After increasing the provisioned write capacity units

(WCUs) to 50,000, the specialist receives the same errors. Amazon CloudWatch metrics show a consumption of 1,500 WCUs.

What should the database specialist do to address the issue?

AChange the data model to avoid hot partitions in the global secondary index.

BEnable auto scaling for the table to automatically increase write capacity during bulk imports.

CModify the table to use on-demand capacity instead of provisioned capacity.

DIncrease the number of retries on the bulk loading application.

Q3.

A financial services company runs an on-premises MySQL database for a critical application. The company is dissatisfied with its current database disaster recovery (DR) solution. The application experiences a significant amount of downtime whenever the database fails over to its DR facility. The application also experiences slower response times when reports are processed on the same database. To minimize the downtime in DR situations, the company has decided to migrate the database to AWS. The company requires a solution that is highly available and the most cost-effective.

Which solution meets these requirements?

ACreate an Amazon RDS for MySQL Multi-AZ DB instance and configure a read replica in a different Availability Zone. Configure the application to reference the replica instance endpoint and report queries to reference the primary DB instance endpoint.

BCreate an Amazon RDS for MySQL Multi-AZ DB instance and configure a read replica in a different Availability Zone. Configure the application to reference the primary DB instance endpoint and report queries to reference the replica instance endpoint.

CCreate an Amazon Aurora DB cluster and configure an Aurora Replica in a different Availability Zone. Configure the application to reference the cluster endpoint and report queries to reference the reader endpoint.

DCreate an Amazon Aurora DB cluster and configure an Aurora Replica in a different Availability Zone. Configure the application to reference the primary DB instance endpoint and report queries to reference the replica instance endpoint.

Q4.

An application reads and writes data to an Amazon RDS for MySQL DB instance. A new reporting dashboard needs read-only access to the database. When the application and reports are both under heavy load, the database experiences performance degradation. A database specialist needs to improve the database performance.

What should the database specialist do to meet these requirements?

ACreate a read replica of the DB instance. Configure the reports to connect to the replication instance endpoint.

BCreate a read replica of the DB instance. Configure the application and reports to connect to the cluster endpoint.

CEnable Multi-AZ deployment. Configure the reports to connect to the standby replica.

DEnable Multi-AZ deployment. Configure the application and reports to connect to the cluster endpoint.

Q5.

A finance company migrated its 3 ' on-premises PostgreSQL database to an Amazon Aurora PostgreSQL DB cluster. During a review after the migration, a database specialist discovers that the database is not encrypted at rest. The database must be encrypted at rest as soon as possible to meet security requirements. The database specialist must enable encryption for the DB cluster with minimal downtime.

Which solution will meet these requirements?

AModify the unencrypted DB cluster using the AWS Management Console. Enable encryption and choose to apply the change immediately.

BTake a snapshot of the unencrypted DB cluster and restore it to a new DB cluster with encryption enabled. Update any database connection strings to reference the new DB cluster endpoint, and then delete the unencrypted DB cluster.

CCreate an encrypted Aurora Replica of the unencrypted DB cluster. Promote the Aurora Replica as the new master.

DCreate a new DB cluster with encryption enabled and use the pg_dump and pg_restore utilities to load data to the new DB cluster. Update any database connection strings to reference the new DB cluster endpoint, and then delete the unencrypted DB cluster.

Solutions:

Question: 1 Answer: C

Question: 2 Answer: A

Question: 3 Answer: C

Question: 4 Answer: A

Question: 5 Answer: B

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Nathan 5 days ago

Question 4 is B and D from the documentation: https://docs.aws.amazon.com/AmazonRDS/latest/AuroraUserGuide/Overview.Encryption.html#Overview.Encryption.Limitations "You can't convert an unencrypted DB cluster to an encrypted one. However, you can restore an unencrypted snapshot to an encrypted Aurora DB cluster. To do this, specify a KMS key when you restore from the unencrypted snapshot." So it's not B and C but B and D...

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Admin 4 days ago

Thank you for pointing this out. I have notified our expert team about the error and will be updated soon.

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Harvey 6 days ago

What is the difference in the three formats of dbs-c01 practice test?

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Admin 5 days ago

Study4Exam DBS-C01 Questions Answers are available in the form of PDF questions, Web-based and Desktop Practice Test. You can prepare either way that you find easy for the DBS-C01 Amazon Specialty exam preparation. You can also download the demo version of these 3 formats.

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Scarlett 7 days ago

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Admin 6 days ago

Thank you for your feedback!

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Sharon 7 days ago

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Admin 7 days ago

Hi. Our DBS-C01 Questions Answers are up to date and more than 95% of the candidates have passed their Amazon Specialty certification by preparing from our DBS-C01 Test Questions.

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