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Amazon DBS-C01 Online Practice Questions and Exam Preparation

DBS-C01 Exam Details

  • Exam Code
    :DBS-C01
  • Exam Name
    :AWS Certified Database - Specialty (DBS-C01)
  • Certification
    :Amazon Certifications
  • Vendor
    :Amazon
  • Total Questions
    :321 Q&As
  • Last Updated
    :Jul 12, 2026

Amazon DBS-C01 Online Questions & Answers

  • Question 61:

    A database specialist needs to move an Amazon ROS DB instance from one AWS account to another AWS account.

    Which solution will meet this requirement with the LEAST operational effort?

    A. Use AWS Database Migration Service (AWS DMS) to migrate the DB instance from the source AWS account to the destination AWS account.
    B. Create a DB snapshot of the DB instance. Share the snapshot With the destination AWS account Create a new DB instance by restoring the snapshot in the destination AWS account
    C. Create a Multi-AZ deployment tor the DB instance. Create a read replica tor the DB instance in the source AWS account. use the read replica to replicate the data into the DB instance in the destination AWS account
    D. Use AWS DataSync to back up the DB instance in the source AWS account Use AWS Resource Access Manager (AWS RAM) to restore the backup in the destination AWS account.

  • Question 62:

    A Database Specialist is creating a new Amazon Neptune DB cluster, and is attempting to load fata from Amazon S3 into the Neptune DB cluster using the Neptune bulk loader API. The Database Specialist receives the following error:

    "Unable to connect to s3 endpoint. Provided source = s3://mybucket/graphdata/ and region = us-east-1. Please verify your S3 configuration."

    Which combination of actions should the Database Specialist take to troubleshoot the problem? (Choose two.)

    A. Check that Amazon S3 has an IAM role granting read access to Neptune
    B. Check that an Amazon S3 VPC endpoint exists
    C. Check that a Neptune VPC endpoint exists
    D. Check that Amazon EC2 has an IAM role granting read access to Amazon S3
    E. Check that Neptune has an IAM role granting read access to Amazon S3

  • Question 63:

    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?

    A. Modify the unencrypted DB cluster using the AWS Management Console. Enable encryption and choose to apply the change immediately.
    B. Take 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.
    C. Create an encrypted Aurora Replica of the unencrypted DB cluster. Promote the Aurora Replica as the new master.
    D. Create 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.

  • Question 64:

    A Database Specialist is performing a proof of concept with Amazon Aurora using a small instance to confirm a simple database behavior. When loading a large dataset and creating the index, the Database Specialist encounters the following error message from Aurora:

    ERROR: cloud not write block 7507718 of temporary file: No space left on device

    What is the cause of this error and what should the Database Specialist do to resolve this issue?

    A. The scaling of Aurora storage cannot catch up with the data loading. The Database Specialist needs to modify the workload to load the data slowly.
    B. The scaling of Aurora storage cannot catch up with the data loading. The Database Specialist needs to enable Aurora storage scaling.
    C. The local storage used to store temporary tables is full. The Database Specialist needs to scale up the instance.
    D. The local storage used to store temporary tables is full. The Database Specialist needs to enable local storage scaling.

  • Question 65:

    A business is transferring a database from one AWS Region to another using an Amazon RDS for SQL Server DB instance. The organization wishes to keep database downtime to a minimum throughout the transfer. Which migration strategy should the organization use for this cross-regional move?

    A. Back up the source database using native backup to an Amazon S3 bucket in the same Region. Then restore the backup in the target Region.
    B. Back up the source database using native backup to an Amazon S3 bucket in the same Region. Use Amazon S3 Cross-Region Replication to copy the backup to an S3 bucket in the target Region. Then restore the backup in the target Region.
    C. Configure AWS Database Migration Service (AWS DMS) to replicate data between the source and the target databases. Once the replication is in sync, terminate the DMS task.
    D. Add an RDS for SQL Server cross-Region read replica in the target Region. Once the replication is in sync, promote the read replica to master.

  • Question 66:

    An advertising company is developing a backend for a bidding platform. The company needs a cost-effective datastore solution that will accommodate a sudden increase in the volume of write transactions. The database also needs to make data changes available in a near real-time data stream.

    Which solution will meet these requirements?

    A. Amazon Aurora MySQL Multi-AZ DB cluster
    B. Amazon Keyspaces (for Apache Cassandra)
    C. Amazon DynamoDB table with DynamoDB auto scaling
    D. Amazon DocumentDB (with MongoDB compatibility) cluster with a replica instance in a second Availability Zone

  • Question 67:

    A company is due for renewing its database license. The company wants to migrate its 80 TB transactional database system from on-premises to the AWS Cloud. The migration should incur the least possible downtime on the downstream database applications. The company's network infrastructure has limited network bandwidth that is shared with other applications.

    Which solution should a database specialist use for a timely migration?

    A. Perform a full backup of the source database to AWS Snowball Edge appliances and ship them to be loaded to Amazon S3. Use AWS DMS to migrate change data capture (CDC) data from the source database to Amazon S3. Use a second AWS DMS task to migrate all the S3 data to the target database.
    B. Perform a full backup of the source database to AWS Snowball Edge appliances and ship them to be loaded to Amazon S3. Periodically perform incremental backups of the source database to be shipped in another Snowball Edge appliance to handle syncing change data capture (CDC) data from the source to the target database.
    C. Use AWS DMS to migrate the full load of the source database over a VPN tunnel using the internet for its primary connection. Allow AWS DMS to handle syncing change data capture (CDC) data from the source to the target database.
    D. Use the AWS Schema Conversion Tool (AWS SCT) to migrate the full load of the source database over a VPN tunnel using the internet for its primary connection. Allow AWS SCT to handle syncing change data capture (CDC) data from the source to the target database.

  • Question 68:

    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 cluster. Verify the datatype of the columns.
    B. 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.
    C. Enable the AWS Schema Conversion Tool (AWS SCT) premigration validation and review the premigration checklist to make sure there are no issues with the conversion.
    D. Enable AWS DMS data validation on the task so the AWS DMS task compares the source and target records, and reports any mismatches.

  • Question 69:

    A company wants to improve its ecommerce website on AWS. A database specialist decides to add Amazon ElastiCache for Redis in the implementation stack to ease the workload off the database and shorten the website response times. The database specialist must also ensure the ecommerce website is highly available within the company's AWS Region.

    How should the database specialist deploy ElastiCache to meet this requirement?

    A. Launch an ElastiCache for Redis cluster using the AWS CLI with the -cluster-enabled switch.
    B. Launch an ElastiCache for Redis cluster and select read replicas in different Availability Zones.
    C. Launch two ElastiCache for Redis clusters in two different Availability Zones. Configure Redis streams to replicate the cache from the primary cluster to another.
    D. Launch an ElastiCache cluster in the primary Availability Zone and restore the cluster's snapshot to a different Availability Zone during disaster recovery.

  • Question 70:

    An online gaming company is using an Amazon DynamoDB table in on-demand mode to store game scores. After an intensive advertisement campaign in South

    America, the average number of concurrent users rapidly increases from 100,000 to 500,000 in less than 10 minutes every day around 5 PM.

    The on-call software reliability engineer has observed that the application logs contain a high number of DynamoDB throttling exceptions caused by game score insertions around 5 PM. Customer service has also reported that several users are complaining about their scores not being registered.

    How should the database administrator remediate this issue at the lowest cost?

    A. Enable auto scaling and set the target usage rate to 90%.
    B. Switch the table to provisioned mode and enable auto scaling.
    C. Switch the table to provisioned mode and set the throughput to the peak value.
    D. Create a DynamoDB Accelerator cluster and use it to access the DynamoDB table.

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