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Becoming AWS Certified in Database - Specialty (DBS-C01) can open up numerous career opportunities for individuals. As more businesses move towards cloud computing, the demand for AWS certified professionals continues to grow. AWS Certified Database - Specialty (DBS-C01) Exam certification can help individuals stand out in a competitive job market and showcase their expertise in AWS database services.

Amazon DBS-C01 certification exam consists of 65 multiple-choice and multiple-response questions that must be completed within 180 minutes. DBS-C01 exam fee is $300, and it is available in several languages, including English, Japanese, Korean, and Simplified Chinese. To pass the exam, candidates must achieve a minimum score of 750 out of 1000 points. Upon passing the exam, candidates will receive a digital badge and a certificate that validates their skills and knowledge in AWS database services. AWS Certified Database - Specialty (DBS-C01) Exam certification is valid for three years, after which candidates must recertify to maintain their credentials.

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The DBS-C01 exam is a challenging exam that requires a deep understanding of databases and data management, as well as a thorough knowledge of AWS services and technologies. Candidates must possess a strong technical background, as well as experience designing and implementing database solutions on AWS. They must also be familiar with AWS security best practices and compliance requirements.

Amazon AWS Certified Database - Specialty (DBS-C01) Exam Sample Questions (Q227-Q232):

NEW QUESTION # 227
A business's production databases are housed on a 3 TB Amazon Aurora MySQL DB cluster. The database cluster is installed in the region us-east-1. For disaster recovery (DR) requirements, the company's database expert needs to fast deploy the DB cluster in another AWS Region to handle the production load with an RTO of less than two hours.
Which approach is the MOST OPERATIONALLY EFFECTIVE in meeting these requirements?

A. Create an Aurora global database that spans two Regions. Use AWS Database Migration Service (AWS DMS) to migrate the existing database to the new global database.
B. Implement an AWS Lambda function to take a snapshot of the production DB cluster every 2 hours, and copy that snapshot to an Amazon S3 bucket in the DR Region. Restore the snapshot to an appropriately sized DB cluster in the DR Region.
C. Create a smaller DB cluster in the DR Region. Configure an AWS Database Migration Service (AWS DMS) task with change data capture (CDC) enabled to replicate data from the current production DB cluster to the DB cluster in the DR Region.
D. Add a cross-Region read replica in the DR Region with the same instance type as the current primary instance. If the read replica in the DR Region needs to be used for production, promote the read replica to become a standalone DB cluster.

Answer: D

Explanation:
RTO is 2 hours. With 3 TB database, cross-region replica is a better option

NEW QUESTION # 228
A company has branch offices in the United States and Singapore. The company has a three-tier web application that uses a shared database. The database runs on an Amazon RDS for MySQL DB instance that is hosted in the us-west-2 Region. The application has a distributed front end that is deployed in us-west-2 and in the ap-southeast-1 Region. The company uses this front end as a dashboard that provides statistics to sales managers in each branch office.
The dashboard loads more slowly in the Singapore branch office than in the United States branch office. The company needs a solution so that the dashboard loads consistently for users in each location.
Which solution will meet these requirements in the MOST operationally efficient way?

A. Create a new DB instance in ap-southeast-1. Use AWS Database Migration Service (AWS DMS) and change data capture (CDC) to update the new DB instance in ap-southeast-1. Reconfigure the ap-southeast-1 front-end dashboard to access the new DB instance.
B. Create an RDS read replica in us-west-2, where the primary DB instance resides. Create a read replica in ap-southeast-1 from the read replica in us-west-2. Reconfigure the ap-southeast-1 front-end dashboard to access the read replica in ap-southeast-1.
C. Create an RDS read replica in ap-southeast-1 from the primary DB instance in us-west-2. Reconfigure the ap-southeast-1 front-end dashboard to access the read replica.
D. Take a snapshot of the DB instance in us-west-2. Create a new DB instance in ap-southeast-2 from the snapshot. Reconfigure the ap-southeast-1 front-end dashboard to access the new DB instance.

Answer: C

NEW QUESTION # 229
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 new database using native backup and restore
B. Create a snapshot of the old databases and restore the snapshot with the required storage
C. Create a new RDS DB instance with the required storage and move the databases from the old instances to the new instance using AWS DMS
D. Create a new read replica and make it the primary by terminating the existing primary

Answer: C

Explanation:
Explanation
https://aws.amazon.com/premiumsupport/knowledge-center/rds-db-storage-size/ Use AWS Database Migration Service (AWS DMS) for minimal downtime.

NEW QUESTION # 230
A company is using an Amazon Aurora PostgreSQL DB cluster with an xlarge primary instance master and two large Aurora Replicas for high availability and read-only workload scaling. A failover event occurs and application performance is poor for several minutes. During this time, application servers in all Availability Zones are healthy and responding normally.
What should the company do to eliminate this application performance issue?

A. Configure both Aurora Replicas to have the same instance class as the primary DB instance.
ImplementAurora PostgreSQL DB cluster cache management. Set the failover priority to tier-0 for the primary DBinstance and to tier-1 for the replicas.
B. Configure one Aurora Replica to have the same instance class as the primary DB instance.
ImplementAurora PostgreSQL DB cluster cache management. Set the failover priority to tier-0 for the primary DBinstance and one replica with the same instance class. Set the failover priority to tier-1 for the otherreplicas.
C. Configure both of the Aurora Replicas to the same instance class as the primary DB instance.
Enablecache coherence on the DB cluster, set the primary DB instance failover priority to tier-0, and assign afailover priority of tier-1 to the replicas.
D. Deploy an AWS Lambda function that calls the DescribeDBInstances action to establish which instancehas failed, and then use the PromoteReadReplica operation to promote one Aurora Replica to be theprimary DB instance. Configure an Amazon RDS event subscription to send a notification to an AmazonSNS topic to which the Lambda function is subscribed.

Answer: A

NEW QUESTION # 231
A company uses the Amazon DynamoDB table contractDB in us-east-1 for its contract system with the following schema:
orderID (primary key) timestamp (sort key) contract (map) createdBy (string) customerEmail (string) After a problem in production, the operations team has asked a database specialist to provide an IAM policy to read items from the database to debug the application. In addition, the developer is not allowed to access the value of the customerEmail field to stay compliant.
Which IAM policy should the database specialist use to achieve these requirements?
A)

B)

C)

D)