Free AWS-Certified-Database-Specialty Exam Dumps

Question 41

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 data capture (CDC)

Correct Answer:A
"requires minimal downtime when the RDS DB instance goes live" in order to do CDC: "you must first ensure that ARCHIVELOG MODE is on to provide information to LogMiner. AWS DMS uses LogMiner to read information from the archive logs so that AWS DMS can capture changes"
https://docs.aws.amazon.com/dms/latest/sbs/chap-oracle2postgresql.steps.configureoracle.html "If you want to capture and apply changes (CDC), then you also need the following privileges."

Question 42

A company has deployed an e-commerce web application in a new AWS account. An Amazon RDS for MySQL Multi-AZ DB instance is part of this deployment with a database-1.xxxxxxxxxxxx.us-east- 1.rds.amazonaws.com endpoint listening on port 3306. The company’s Database Specialist is able to log in to MySQL and run queries from the bastion host using these details.
When users try to utilize the application hosted in the AWS account, they are presented with a generic error message. The application servers are logging a “could not connect to server: Connection times out” error message to Amazon CloudWatch Logs.
What is the cause of this error?

A. The user name and password the application is using are incorrect.
B. The security group assigned to the application servers does not have the necessary rules to allow inbound connections from the DB instance.
C. The security group assigned to the DB instance does not have the necessary rules to allow inbound connections from the application servers.
D. The user name and password are correct, but the user is not authorized to use the DB instance.

Correct Answer:C

Question 43

A business is transferring its on-premises database workloads to the Amazon Web Services (AWS) Cloud. A database professional migrating an Oracle database with a huge table to Amazon RDS has picked AWS DMS. The database professional observes that AWS DMS is consuming considerable time migrating the data.
Which activities would increase the pace of data migration? (Select three.)

A. Create multiple AWS DMS tasks to migrate the large table.
B. Configure the AWS DMS replication instance with Multi-AZ.
C. Increase the capacity of the AWS DMS replication server.
D. Establish an AWS Direct Connect connection between the on-premises data center and AWS.
E. Enable an Amazon RDS Multi-AZ configuration.
F. Enable full large binary object (LOB) mode to migrate all LOB data for all large tables.

Correct Answer:ACD
https://docs.aws.amazon.com/dms/latest/userguide/CHAP_Tasks.LOBSupport.html

Question 44

A company is looking to migrate a 1 TB Oracle database from on-premises to an Amazon Aurora PostgreSQL DB cluster. The company’s Database Specialist discovered that the Oracle database is storing 100 GB of large binary objects (LOBs) across multiple tables. The Oracle database has a maximum LOB size of 500 MB with an average LOB size of 350 MB. The Database Specialist has chosen AWS DMS to migrate the data with the largest replication instances.
How should the Database Specialist optimize the database migration using AWS DMS?

A. Create a single task using full LOB mode with a LOB chunk size of 500 MB to migrate the data and LOBs together
B. Create two tasks: task1 with LOB tables using full LOB mode with a LOB chunk size of 500 MB and task2 without LOBs
C. Create two tasks: task1 with LOB tables using limited LOB mode with a maximum LOB size of 500 MB and task 2 without LOBs
D. Create a single task using limited LOB mode with a maximum LOB size of 500 MB to migrate data and LOBs together

Correct Answer:C

Question 45

A company is going through a security audit. The audit team has identified cleartext master user password in the AWS CloudFormation templates for Amazon RDS for MySQL DB instances. The audit team has flagged this as a security risk to the database team.
What should a database specialist do to mitigate this risk?

A. Change all the databases to use AWS IAM for authentication and remove all the cleartext passwords in CloudFormation templates.
B. Use an AWS Secrets Manager resource to generate a random password and reference the secret in the CloudFormation template.
C. Remove the passwords from the CloudFormation templates so Amazon RDS prompts for the password when the database is being created.
D. Remove the passwords from the CloudFormation template and store them in a separate fil
E. Replace the passwords by running CloudFormation using a sed command.

Correct Answer:B
https://aws.amazon.com/blogs/infrastructure-and-automation/securing-passwords-in-aws-quick-starts-using-aws