Amazon Web Services techtarget pass Using Dbs-c01 Exam Dumps by Ariel q189 vce pdf

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Exam Name:	AWS Certified Database - Specialty
Exam Code:	DBS-C01 Dumps
Vendor:	Amazon Web Services	Certification:	AWS Certified Database
Questions:	324 Q&A's	Shared By:	ariel

Question 52

A company uses Amazon DynamoDB as the data store for its ecommerce website. The website receives little to no traffic at night, and the majority of the traffic occurs during the day. The traffic growth during peak hours is gradual and predictable on a daily basis, but it can be orders of magnitude higher than during off-peak hours.

The company initially provisioned capacity based on its average volume during the day without accounting for the variability in traffic patterns. However, the website is experiencing a significant amount of throttling during peak hours. The company wants to reduce the amount of throttling while minimizing costs.

What should a database specialist do to meet these requirements?

Options:

Use reserved capacity. Set it to the capacity levels required for peak daytime throughput.

Use provisioned capacity. Set it to the capacity levels required for peak daytime throughput.

Use provisioned capacity. Create an AWS Application Auto Scaling policy to update capacity based on consumption.

Use on-demand capacity.

Discussion

Question 53

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?

Options:

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.

Discussion

Question 54

A company is using Amazon RDS for PostgreSQL. The Security team wants all database connection requests to be logged and retained for 180 days. The RDS for PostgreSQL DB instance is currently using the default parameter group. A Database Specialist has identified that setting the log_connections parameter to 1 will enable connections logging.

Which combination of steps should the Database Specialist take to meet the logging and retention requirements? (Choose two.)

Options:

Update the log_connections parameter in the default parameter group

Create a custom parameter group, update the log_connections parameter, and associate the parameter with the DB instance

Enable publishing of database engine logs to Amazon CloudWatch Logs and set the event expiration to 180 days

Enable publishing of database engine logs to an Amazon S3 bucket and set the lifecycle policy to 180 days

Connect to the RDS PostgreSQL host and update the log_connections parameter in the postgresql.conf file

Discussion

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Question 55

A company has deployed an application that uses an Amazon RDS for MySQL DB cluster. The DB cluster uses three read replicas. The primary DB instance is an

8XL-sized instance, and the read replicas are each XL-sized instances.

Users report that database queries are returning stale data. The replication lag indicates that the replicas are 5 minutes behind the primary DB instance. Status queries on the replicas show that the SQL_THREAD is 10 binlogs behind the IO_THREAD and that the IO_THREAD is 1 binlog behind the primary.

Which changes will reduce the lag? (Choose two.)

Options:

Deploy two additional read replicas matching the existing replica DB instance size.

Migrate the primary DB instance to an Amazon Aurora MySQL DB cluster and add three Aurora Replicas.

Move the read replicas to the same Availability Zone as the primary DB instance.

Increase the instance size of the primary DB instance within the same instance class.

Increase the instance size of the read replicas to the same size and class as the primary DB instance.