Question 61
A gaming company has recently acquired a successful iOS game, which is particularly popular during the holiday 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 62
A company's Security department established new requirements that state internal users must connect to an existing Amazon RDS for SQL Server DB instance using their corporate Active Directory (AD) credentials. A Database Specialist must make the modifications needed to fulfill this requirement.
Which combination of actions should the Database Specialist take? (Choose three.)
A. Disable Transparent Data Encryption (TDE) on the RDS SQL Server DB instance.
B. Modify the RDS SQL Server DB instance to use the directory for Windows authentication. Create appropriate new logins.
C. Use the AWS Management Console to create an AWS Managed Microsoft AD. Create a trust relationship with the corporate AD.
D. Stop the RDS SQL Server DB instance, modify it to use the directory for Windows authentication, and start it again. Create appropriate new logins.
E. Use the AWS Management Console to create an AD Connector. Create a trust relationship with the corporate AD.
F. Configure the AWS Managed Microsoft AD domain controller Security Group.
Question 63
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 deviceWhat 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 64
A financial company wants to store sensitive user data in an Amazon Aurora PostgreSQL DB cluster. The database will be accessed by multiple applications across the company. The company has mandated that all communications to the database be encrypted and the server identity must be validated. Any non-SSL- based connections should be disallowed access to the database.
Which solution addresses these requirements?
A. Set the rds.force_ssl=0 parameter in DB parameter groups. Download and use the Amazon RDS certificate bundle and configure the PostgreSQL connection string with sslmode=allow.
B. Set the rds.force_ssl=1 parameter in DB parameter groups. Download and use the Amazon RDS certificate bundle and configure the PostgreSQL connection string with sslmode=disable.
C. Set the rds.force_ssl=0 parameter in DB parameter groups. Download and use the Amazon RDS certificate bundle and configure the PostgreSQL connection string with sslmode=verify-ca.
D. Set the rds.force_ssl=1 parameter in DB parameter groups. Download and use the Amazon RDS certificate bundle and configure the PostgreSQL connection string with sslmode=verify-full.
Question 65
A company is using 5 TB Amazon RDS DB instances and needs to maintain 5 years of monthly database backups for compliance purposes. A DatabaseAdministrator 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 RDS snapshot.
Question 66
A company wants to automate the creation of secure test databases with random credentials to be stored safely for later use. The credentials should have sufficient information about each test database to initiate a connection and perform automated credential rotations. The credentials should not be logged or stored anywhere in an unencrypted form.
Which steps should a Database Specialist take to meet these requirements using an AWS CloudFormation template?
A. Create the database with the MasterUserName and MasterUserPassword properties set to the default values. Then, create the secret with the user name and password set to the same default values. Add a Secret Target Attachment resource with the SecretId and TargetId properties set to the Amazon Resource Names (ARNs) of the secret and the database. Finally, update the secret's password value with a randomly generated string set by the GenerateSecretString property.
B. Add a Mapping property from the database Amazon Resource Name (ARN) to the secret ARN. Then, create the secret with a chosen user name and a randomly generated password set by the GenerateSecretString property. Add the database with the MasterUserName and MasterUserPassword properties set to the user name of the secret.
C. Add a resource of type AWS::SecretsManager::Secret and specify the GenerateSecretString property. Then, define the database user name in the SecureStringTemplate template. Create a resource for the database and reference the secret string for the MasterUserName and MasterUserPassword properties. Then, add a resource of type AWS::SecretsManagerSecretTargetAttachment with the SecretId and TargetId properties set to the Amazon Resource Names (ARNs) of the secret and the database.
D. Create the secret with a chosen user name and a randomly generated password set by the GenerateSecretString property. Add an SecretTargetAttachment resource with the SecretId property set to the Amazon Resource Name (ARN) of the secret and the TargetId property set to a parameter value matching the desired database ARN. Then, create a database with the MasterUserName and MasterUserPassword properties set to the previously created values in the secret.
Question 67
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. ADatabase 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.conf file.
Question 68
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 ofAurora.
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 69
A company just migrated to Amazon Aurora PostgreSQL from an on-premises Oracle database. After the migration, the company discovered there is a period of time every day around 3:00 PM where the response time of the application is noticeably slower. The company has narrowed down the cause of this issue to the database and not the application.
Which set of steps should the Database Specialist take to most efficiently find the problematic PostgreSQL query?
A. Create an Amazon CloudWatch dashboard to show the number of connections, CPU usage, and disk space consumption. Watch these dashboards during the next slow period.
B. Launch an Amazon EC2 instance, and install and configure an open-source PostgreSQL monitoring tool that will run reports based on the output error logs.
C. Modify the logging database parameter to log all the queries related to locking in the database and then check the logs after the next slow period for this information.
D. Enable Amazon RDS Performance Insights on the PostgreSQL database. Use the metrics to identify any queries that are related to spikes in the graph during the next slow period.
Question 70
A company has a web-based survey application that uses Amazon DynamoDB. During peak usage, when survey responses are being collected, a DatabaseSpecialist sees the ProvisionedThroughputExceededException error.
What can the Database Specialist do to resolve this error? (Choose two.)
A. Change the table to use Amazon DynamoDB Streams
B. Purchase DynamoDB reserved capacity in the affected Region
C. Increase the write capacity units for the specific table
D. Change the table capacity mode to on-demand
E. Change the table type to throughput optimized
