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Amazon DBS-C01 Exam Dumps

AWS Certified Database - Specialty

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Total Questions : 270
Update Date : February 12, 2024
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Amazon DBS-C01 Sample Questions

Question # 1

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

Question # 2

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

Question # 3

An IT consulting company wants to reduce costs when operating its development environment databases. The company’s workflow creates multiple Amazon Aurora MySQL DB clusters for each development group. The Aurora DB clusters are only used for 8 hours a day. The DB clusters can then be deleted at the end of the development cycle, which lasts 2 weeks.Which of the following provides the MOST cost-effective solution?

A. Use AWS CloudFormation templates. Deploy a stack with the DB cluster for each development group.Delete the stack at the end of the development cycle.
B. Use the Aurora DB cloning feature. Deploy a single development and test Aurora DB instance, and createclone instances for the development groups. Delete the clones at the end of the development cycle.
C. Use Aurora Replicas. From the master automatic pause compute capacity option, create replicas for eachdevelopment group, and promote each replica to master. Delete the replicas at the end of the developmentcycle.
D. Use Aurora Serverless. Restore current Aurora snapshot and deploy to a serverless cluster for eachdevelopment group. Enable the option to pause the compute capacity on the cluster and set an appropriatetimeout.

Question # 4

A company is concerned about the cost of a large-scale, transactional application using Amazon DynamoDB that only needs to store data for 2 days before it is deleted. In looking at the tables, a Database Specialist notices that much of the data is months old, and goes back to when the application was first deployed. What can the Database Specialist do to reduce the overall cost?

A. Create a new attribute in each table to track the expiration time and create an AWS Glue transformation to delete entries more than 2 days old.
B. Create a new attribute in each table to track the expiration time and enable DynamoDB Streams on each table.
C. Create a new attribute in each table to track the expiration time and enable time to live (TTL) on each table.
D. Create an Amazon CloudWatch Events event to export the data to Amazon S3 daily using AWS Data Pipeline and then truncate the Amazon DynamoDB table.

Question # 5

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.

Question # 6

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

Question # 7

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)

Question # 8

A company is running an Amazon RDS for PostgeSQL DB instance and wants to migrate it to an Amazon Aurora PostgreSQL DB cluster. The current database is 1 TB in size. The migration needs to have minimal downtime. What is the FASTEST way to accomplish this?

A. Create an Aurora PostgreSQL DB cluster. Set up replication from the source RDS for PostgreSQL DB instance using AWS DMS to the target DB cluster.
B. Use the pg_dump and pg_restore utilities to extract and restore the RDS for PostgreSQL DB instance to the Aurora PostgreSQL DB cluster.
C. Create a database snapshot of the RDS for PostgreSQL DB instance and use this snapshot to create the Aurora PostgreSQL DB cluster.
D. Migrate data from the RDS for PostgreSQL DB instance to an Aurora PostgreSQL DB cluster using an Aurora Replica. Promote the replica during the cutover.

Question # 9

A team of Database Specialists is currently investigating performance issues on an Amazon RDS for MySQL DB instance and is reviewing related metrics. The team wants to narrow the possibilities down to specific database wait events to better understand the situation.How can the Database Specialists accomplish this? 

A. Enable the option to push all database logs to Amazon CloudWatch for advanced analysis
B. Create appropriate Amazon CloudWatch dashboards to contain specific periods of time
C. Enable Amazon RDS Performance Insights and review the appropriate dashboard
D. Enable Enhanced Monitoring will the appropriate settings

Question # 10

A company is using 5 TB Amazon RDS DB instances and needs to maintain 5 years of monthly database backups for compliance purposes. A Database Administrator must provide Auditors with data within 24 hours. Which solution will meet these requirements and is the MOST operationally efficient?

A. Create an AWS Lambda function to run on the first day of every month to take a manual RDS snapshot.Move the snapshot to the company’s Amazon S3 bucket.
B. Create an AWS Lambda function to run on the first day of every month to take a manual RDS snapshot.
C. Create an RDS snapshot schedule from the AWS Management Console to take a snapshot every 30 days.
D. Create an AWS Lambda function to run on the first day of every month to create an automated RDSsnapshot.

Question # 11

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 WellArchitected 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 these new requirements?(Choose three.)  

A. Modify the pg_hba.conf file. Add the required corporate network IPs and remove the unwanted IPs
B. Modify the associated security group. Add the required corporate network IPs and remove the unwanted IPs.
C. Move the DB instance to a private subnet using AWS DMS.
D. Enable VPC peering between the application host running on the corporate network and the VPC associated with the DB instance.
E. Disable the publicly accessible setting.
F. Connect to the DB instance using private IPs and a VPN. 

Question # 12

A Database Specialist is working with a company to launch a new website built on Amazon Aurora with several Aurora Replicas. This new website will replace an on-premises website connected to a legacy relational database. Due to stability issues in the legacy database, the company would like to test the resiliency of Aurora.Which action can the Database Specialist take to test the resiliency of the Aurora DB cluster? 

A. Stop the DB cluster and analyze how the website responds
B. Use Aurora fault injection to crash the master DB instance
C. Remove the DB cluster endpoint to simulate a master DB instance failure
D. Use Aurora Backtrack to crash the DB cluster

Question # 13

A large financial services company requires that all data be encrypted in transit. A Developer is attempting to connect to an Amazon RDS DB instance using the company VPC for the first time with credentials provided by a Database Specialist. Other members of the Development team can connect, but this user is consistently receiving an error indicating a communications link failure. The Developer asked the Database Specialist to reset the password a number of times, but the error persists.Which step should be taken to troubleshoot this issue?

A. Ensure that the database option group for the RDS DB instance allows ingress from the Developermachine’s IP address
B. Ensure that the RDS DB instance’s subnet group includes a public subnet to allow the Developer toconnect
C. Ensure that the RDS DB instance has not reached its maximum connections limit
D. Ensure that the connection is using SSL and is addressing the port where the RDS DB instance is listeningfor encrypted connections

Question # 14

A company maintains several databases using Amazon RDS for MySQL and PostgreSQL. Each RDS database generates log files with retention periods set to their default values. The company has now mandated that database logs be maintained for up to 90 days in a centralized repository to facilitate real-time and after-the-fact analyses.What should a Database Specialist do to meet these requirements with minimal effort?

A. Create an AWS Lambda function to pull logs from the RDS databases and consolidate the log files in an Amazon S3 bucket. Set a lifecycle policy to expire the objects after 90 days.
B. Modify the RDS databases to publish log to Amazon CloudWatch Logs. Change the log retention policy for each log group to expire the events after 90 days.
C. Write a stored procedure in each RDS database to download the logs and consolidate the log files in an Amazon S3 bucket. Set a lifecycle policy to expire the objects after 90 days.
D. Create an AWS Lambda function to download the logs from the RDS databases and publish the logs to Amazon CloudWatch Logs. Change the log retention policy for the log group to expire the events after 90 days.