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DBS-C01 Exam Practice Made Easy: Latest Mock Exams, AWS Certified Database – Specialty | SPOTO

Easily practice for the DBS-C01 Exam with the Latest Mock Exams from SPOTO for AWS Certified Database – Specialty. This certification assesses your in-depth knowledge of database fundamentals, covering design, migration, deployment, access, maintenance, automation, monitoring, security, and troubleshooting concepts. Our mock exams provide a convenient and effective way to prepare, simulating real exam conditions and helping you familiarize yourself with the exam format. Access a range of exam questions, practice tests, and exam dumps to reinforce your understanding and improve exam performance. Benefit from sample questions, exam materials, and answers to enhance your exam practice and preparation. Utilize our exam simulator for realistic testing experiences and gain confidence to ace the AWS Certified Database – Specialty (DBS-C01) exam. SPOTO simplifies exam preparation, making it easier for you to succeed in database specialization.
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Question #1
A Database Specialist is designing a new database infrastructure for a ride hailing application. The application data includes a ride tracking system that stores GPS coordinates for all rides. Real-time statistics and metadata lookups must be performed with high throughput and microsecond latency. The database should be fault tolerant with minimal operational overhead and development effort. Which solution meets these requirements in the MOST efficient way?
A. Use Amazon RDS for MySQL as the database and use Amazon ElastiCache
B. Use Amazon DynamoDB as the database and use DynamoDB Accelerator
C. Use Amazon Aurora MySQL as the database and use Aurora’s buffer cache
D. Use Amazon DynamoDB as the database and use Amazon API Gateway
View answer
Correct Answer: D

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Question #2
A company wants to migrate its existing on-premises Oracle database to Amazon Aurora PostgreSQL. The migration must be completed with minimal downtime using AWS DMS. A Database Specialist must validate that the data was migrated accurately from the source to the target before the cutover. The migration must have minimal impact on the performance of the source database. Which approach will MOST effectively meet these requirements?
A. Use the AWS Schema Conversion Tool (AWS SCT) to convert source Oracle database schemas to the target Aurora DB cluste
B. Verify the datatype of the columns
C. Use the table metrics of the AWS DMS task created for migrating the data to verify the statistics for the tables being migrated and to verify that the data definition language (DDL) statements are completed
D. Enable the AWS Schema Conversion Tool (AWS SCT) premigration validation and review the premigrationchecklist to make sure there are no issues with the conversion
E. Enable AWS DMS data validation on the task so the AWS DMS task compares the source and targetrecords, and reports any mismatches
View answer
Correct Answer: C
Question #3
A user has a non-relational key-value database. The user is looking for a fully managed AWS service that will offload the administrative burdens of operating and scaling distributed databases. The solution must be cost-effective and able to handle unpredictable application traffic. What should a Database Specialist recommend for this user?
A. Create an Amazon DynamoDB table with provisioned capacity mode
B. Create an Amazon DocumentDB cluster
C. Create an Amazon DynamoDB table with on-demand capacity mode
D. Create an Amazon Aurora Serverless DB cluster
View answer
Correct Answer: AE
Question #4
A gaming company is designing a mobile gaming app that will be accessed by many users across the globe. The company wants to have replication and full support for multi-master writes. The company also wants to ensure low latency and consistent performance for app users. Which solution meets these requirements?
A. Use Amazon DynamoDB global tables for storage and enable DynamoDB automatic scaling
B. Use Amazon Aurora for storage and enable cross-Region Aurora Replicas
C. Use Amazon Aurora for storage and cache the user content with Amazon ElastiCache
D. Use Amazon Neptune for storage
View answer
Correct Answer: ACF
Question #5
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 the rcuCount and wcuCount parameters to the Mappings section of the template
B. Add values for two Number parameters, rcuCount and wcuCount, to the templat
C. Replace the hard-codedvalues with calls to the Ref intrinsic function, referencing the new parameters
D. Add values for the rcuCount and wcuCount parameters as outputs of the templat
E. Configure DynamoDBto provision throughput capacity using the stack outputs
F. Add values for the rcuCount and wcuCount parameters to the Mappings section of the template
View answer
Correct Answer: D
Question #6
A company is running a finance application on an Amazon RDS for MySQL DB instance. The application is governed by multiple financial regulatory agencies. The RDS DB instance is set up with security groups to allow access to certain Amazon EC2 servers only. AWS KMS is used for encryption at rest. Which step will provide additional security?
A. Set up NACLs that allow the entire EC2 subnet to access the DB instance
B. Disable the master user account
C. Set up a security group that blocks SSH to the DB instance
D. Set up RDS to use SSL for data in transit
View answer
Correct Answer: D
Question #7
An Amazon RDS EBS-optimized instance with Provisioned IOPS (PIOPS) storage is using less than half of its allocated IOPS over the course of several hours under constant load. The RDS instance exhibits multi-second read and write latency, and uses all of its maximum bandwidth for read throughput, yet the instance uses less than half of its CPU and RAM resources. What should a Database Specialist do in this situation to increase performance and return latency to sub-second levels?
A. Increase the size of the DB instance storage
B. Change the underlying EBS storage type to General Purpose SSD (gp2)
C. Disable EBS optimization on the DB instance
D. Change the DB instance to an instance class with a higher maximum bandwidth
View answer
Correct Answer: D
Question #8
A Database Specialist must create a read replica to isolate read-only queries for an Amazon RDS for MySQLDB instance. Immediately after creating the read replica, users that query it report slow response times. What could be causing these slow response times?
A. New volumes created from snapshots load lazily in the background
B. Long-running statements on the master
C. Insufficient resources on the master
D. Overload of a single replication thread by excessive writes on the master
View answer
Correct Answer: C
Question #9
A company has an Amazon RDS Multi-AZ DB instances that is 200 GB in size with an RPO of 6 hours. To meet the company’s disaster recovery policies, the database backup needs to be copied into another Region. The company requires the solution to be cost-effective and operationally efficient. What should a Database Specialist do to copy the database backup into a different Region?
A. Use Amazon RDS automated snapshots and use AWS Lambda to copy the snapshot into another Region
B. Use Amazon RDS automated snapshots every 6 hours and use Amazon S3 cross-Region replication tocopy the snapshot into another Region
C. Create an AWS Lambda function to take an Amazon RDS snapshot every 6 hours and use a secondLambda function to copy the snapshot into another Region
D. Create a cross-Region read replica for Amazon RDS in another Region and take an automated snapshot ofthe read replica
View answer
Correct Answer: C
Question #10
A large company is using an Amazon RDS for Oracle Multi-AZ DB instance with a Java application. As a part of its disaster recovery annual testing, the company would like to simulate an Availability Zone failure and record how the application reacts during the DB instance failover activity. The company does not want to make any code changes for this activity. What should the company do to achieve this in the shortest amount of time?
A. Use a blue-green deployment with a complete application-level failover test
B. Use the RDS console to reboot the DB instance by choosing the option to reboot with failover
C. Use RDS fault injection queries to simulate the primary node failure
D. Add a rule to the NACL to deny all traffic on the subnets associated with a single Availability Zone
View answer
Correct Answer: C
Question #11
A company is writing a new survey application to be used with a weekly televised game show. The application will be available for 2 hours each week. The company expects to receive over 500,000 entries every week, with each survey asking 2-3 multiple choice questions of each user. A Database Specialist needs to select a platform that is highly scalable for a large number of concurrent writes to handle he anticipated volume. Which AWS services should the Database Specialist consider? (Choose two.)
A. Amazon DynamoDB
B. Amazon Redshift
C. Amazon Neptune
D. Amazon Elasticsearch Service
E. Amazon ElastiCache
View answer
Correct Answer: AE
Question #12
A media company is using Amazon RDS for PostgreSQL to store user data. The RDS DB instance currently has a publicly accessible setting enabled and is hosted in a public subnet. Following a recent AWS Well- Architected Framework review, a Database Specialist was given new security requirements. Only certain on-premises corporate network IPs should connect to the DB instance. Connectivity is allowed from the corporate network only. Which combination of steps does the Database Specialist need to take to meet t
A. Modify the pg_hba
B. Add the required corporate network IPs and remove the unwanted IPs
C. Modify the associated security grou
D. Add the required corporate network IPs and remove the unwanted IPs
E. Move the DB instance to a private subnet using AWS DMS
F. Enable VPC peering between the application host running on the corporate network and the VPC associated with the DB instance
View answer
Correct Answer: C
Question #13
A Database Specialist is planning to create a read replica of an existing Amazon RDS for MySQL Multi-AZ DB instance. When using the AWS Management Console to conduct this task, the Database Specialist discovers that the source RDS DB instance does not appear in the read replica source selection box, so the read replica cannot be created. What is the most likely reason for this?
A. The source DB instance has to be converted to Single-AZ first to create a read replica from it
B. Enhanced Monitoring is not enabled on the source DB instance
C. The minor MySQL version in the source DB instance does not support read replicas
D. Automated backups are not enabled on the source DB instance
View answer
Correct Answer: B
Question #14
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 DynamoDB Accelerator
C. DynamoDB with on-demand capacity mode
D. DynamoDB with provisioned capacity mode with Auto Scaling
View answer
Correct Answer: A
Question #15
A company is going to use an Amazon Aurora PostgreSQL DB cluster for an application backend. The DB cluster contains some tables with sensitive data. A Database Specialist needs to control the access privileges at the table level. How can the Database Specialist meet these requirements?
A. Use AWS IAM database authentication and restrict access to the tables using an IAM policy
B. Configure the rules in a NACL to restrict outbound traffic from the Aurora DB cluster
C. Execute GRANT and REVOKE commands that restrict access to the tables containing sensitive data
D. Define access privileges to the tables containing sensitive data in the pg_hba
View answer
Correct Answer: D
Question #16
A Database Specialist has migrated an on-premises Oracle database to Amazon Aurora PostgreSQL. The schema and the data have been migrated successfully. The on-premises database server was also being used to run database maintenance cron jobs written in Python to perform tasks including data purging and generating data exports. The logs for these jobs show that, most of the time, the jobs completed within 5 minutes, but a few jobs took up to 10 minutes to complete. These maintenance jobs need to be set up fo
A. Create cron jobs on an Amazon EC2 instance to run the maintenance jobs following the required schedule
B. Connect to the Aurora host and create cron jobs to run the maintenance jobs following the requiredschedule
C. Create AWS Lambda functions to run the maintenance jobs and schedule them with Amazon CloudWatchEvents
D. Create the maintenance job using the Amazon CloudWatch job scheduling plugin
View answer
Correct Answer: B
Question #17
A Database Specialist needs to speed up any failover that might occur on an Amazon Aurora PostgreSQL DB cluster. The Aurora DB cluster currently includes the primary instance and three Aurora Replicas. How can the Database Specialist ensure that failovers occur with the least amount of downtime for the application?
A. Set the TCP keepalive parameters low
B. Call the AWS CLI failover-db-cluster command
C. Enable Enhanced Monitoring on the DB cluster
D. Start a database activity stream on the DB cluster
View answer
Correct Answer: A
Question #18
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 on-premises application database to act as a source for an AWS DMS full load with ongoing change data capture (CDC)
B. Configure the AWS DMS replication instance to allow both full load and ongoing change data capture(CDC)
C. Configure the AWS DMS task to generate full logs to allow for ongoing change data capture (CDC)
D. Configure the AWS DMS connections to allow two-way communication to allow for ongoing change datacapture (CDC)
View answer
Correct Answer: A

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