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Amazon Web Services DBS-C01 Exam Dumps


Exam Code: DBS-C01
Exam Name: AWS Certified Database - Specialty

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DBS-C01 Exam Sample Questions:



Recently, a gaming firm purchased a popular iOS game that is especially popular during
the Christmas season. The business has opted to include a leaderboard into the game,
which will be powered by Amazon DynamoDB. The application's load is likely to increase
significantly throughout the Christmas season.
Which solution satisfies these criteria at the lowest possible cost?

 

DynamoDB Streams

 

DynamoDB with DynamoDB Accelerator

 

DynamoDB with on-demand capacity mode

 

DynamoDB with provisioned capacity mode with Auto Scaling


DynamoDB with provisioned capacity mode with Auto Scaling


Explanation: "On-demand is ideal for bursty, new, or unpredictable workloads whose
traffic can spike in seconds or minutes"
vs.
'DynamoDB released auto scaling to make it easier for you to manage capacity efficiently,
and auto scaling continues to help DynamoDB users lower the cost of workloads that have
a predictable traffic pattern."
https://aws.amazon.com/blogs/database/amazon-dynamodb-auto-scaling-performanceand-
cost-optimization-at-any-scale/





A company migrated one of its business-critical database workloads to an Amazon Aurora
Multi-AZ DB cluster. The company requires a very low RTO and needs to improve the
application recovery time after database failovers.
Which approach meets these requirements?

 

Set the max_connections parameter to 16,000 in the instance-level parameter group.

 

Modify the client connection timeout to 300 seconds.

 

Create an Amazon RDS Proxy database proxy and update client connections to point to
the proxy endpoint

 

Enable the query cache at the instance level


Create an Amazon RDS Proxy database proxy and update client connections to point to
the proxy endpoint


Explanation:
Amazon RDS Proxy allows applications to pool and share connections established with the
database, improving database efficiency and application scalability. With RDS Proxy,
failover times for Aurora and RDS databases are reduced by up to 66% and database
credentials, authentication, and access can be managed through integration with AWS
Secrets Manager and AWS Identity and Access Management (IAM).
https://aws.amazon.com/rds/proxy/





A business is launching a new Amazon RDS for SQL Server database instance. The
organization wishes to allow auditing of the SQL Server database.
Which measures should a database professional perform in combination to achieve this
requirement? (Select two.)

 

Create a service-linked role for Amazon RDS that grants permissions for Amazon RDS
to store audit logs on Amazon S3.

 

Set up a parameter group to configure an IAM role and an Amazon S3 bucket for audit
log storage. Associate the parameter group with the DB instance

 

Disable Multi-AZ on the DB instance, and then enable auditing. Enable Multi-AZ after
auditing is enabled.

 

Disable automated backup on the DB instance, and then enable auditing. Enable
automated backup after auditing is enabled

 

Set up an options group to configure an IAM role and an Amazon S3 bucket for audit log
storage. Associate the options group with the DB instance


Create a service-linked role for Amazon RDS that grants permissions for Amazon RDS
to store audit logs on Amazon S3.


Set up an options group to configure an IAM role and an Amazon S3 bucket for audit log
storage. Associate the options group with the DB instance


Explanation:
https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/Appendix.SQLServer.Options
.Audit.html
https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/security_iam_service-withiam.
html





A database specialist was alerted that a production Amazon RDS MariaDB instance with
100 GB of storage was out of space. In response, the database specialist modified the DB
instance and added 50 GB of storage capacity. Three hours later, a new alert is generated
due to a lack of free space on the same DB instance. The database specialist decides to
modify the instance immediately to increase its storage capacity by 20 GB.
What will happen when the modification is submitted?

 

The request will fail because this storage capacity is too large.

 

The request will succeed only if the primary instance is in active status.

 

The request will succeed only if CPU utilization is less than 10%.

 

The request will fail as the most recent modification was too soon.


The request will fail as the most recent modification was too soon.


Explanation:
https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/USER_PIOPS.StorageTypes.
html





An internet advertising firm stores its data in an Amazon DynamoDb table. Amazon
DynamoDB Streams are enabled on the table, and one of the keys has a global secondary
index. The table is encrypted using a customer-managed AWS Key Management Service
(AWS KMS) key.
The firm has chosen to grow worldwide and want to duplicate the database using
DynamoDB global tables in a new AWS Region.
An administrator observes the following upon review:
No role with the dynamodb: CreateGlobalTable permission exists in the account.
An empty table with the same name exists in the new Region where replication is
desired.
A global secondary index with the same partition key but a different sort key exists
in the new Region where replication is desired.
Which settings will prevent you from creating a global table or replica in the new Region?

 

A global secondary index with the same partition key but a different sort key exists in the
new Region where replication is desired.

 

An empty table with the same name exists in the Region where replication is desired.

 

No role with the dynamodb:CreateGlobalTable permission exists in the account

 

DynamoDB Streams is enabled for the table.

 

The table is encrypted using a KMS customer managed key.


A global secondary index with the same partition key but a different sort key exists in the
new Region where replication is desired.


An empty table with the same name exists in the Region where replication is desired.




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