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Amazon Web Services Updated DVA-C02 Exam Questions and Answers by tudor

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Amazon Web Services DVA-C02 Exam Overview :

Exam Name: AWS Certified Developer - Associate
Exam Code: DVA-C02 Dumps
Vendor: Amazon Web Services Certification: AWS Certified Associate
Questions: 292 Q&A's Shared By: tudor
Question 64

A developer is deploying a company's application to Amazon EC2 instances The application generates gigabytes of data files each day The files are rarely accessed but the files must be available to the application's users within minutes of a request during the first year of storage The company must retain the files for 7 years.

How can the developer implement the application to meet these requirements MOST cost-effectively?

Options:

A.

Store the files in an Amazon S3 bucket Use the S3 Glacier Instant Retrieval storage class Create an S3 Lifecycle policy to transition the files to the S3 Glacier Deep Archive storage class after 1 year

B.

Store the files in an Amazon S3 bucket. Use the S3 Standard storage class. Create an S3 Lifecycle policy to transition the files to the S3 Glacier Flexible Retrieval storage class after 1 year.

C.

Store the files on an Amazon Elastic Block Store (Amazon EBS) volume Use Amazon Data Lifecycle Manager (Amazon DLM) to create snapshots of the EBS volumes and to store those snapshots in Amazon S3

D.

Store the files on an Amazon Elastic File System (Amazon EFS) mount. Configure EFS lifecycle management to transition the files to the EFS Standard-Infrequent Access (Standard-IA) storage class after 1 year.

Discussion
Question 65

A company is migrating an on-premises database to Amazon RDS for MySQL. The company has read-heavy workloads. The company wants to refactor the code to achieve optimum read performance for queries.

Which solution will meet this requirement with LEAST current and future effort?

Options:

A.

Use a multi-AZ Amazon RDS deployment. Increase the number of connections that the code makes to the database or increase the connection pool size if a connection pool is in use.

B.

Use a multi-AZ Amazon RDS deployment. Modify the code so that queries access the secondary RDS instance.

C.

Deploy Amazon RDS with one or more read replicas. Modify the application code so that queries use the URL for the read replicas.

D.

Use open source replication software to create a copy of the MySQL database on an Amazon EC2 instance. Modify the application code so that queries use the IP address of the EC2 instance.

Discussion
Question 66

A development team wants to build a continuous integration/continuous delivery (CI/CD) pipeline. The team is using AWS CodePipeline to automate the code build and deployment. The team wants to store the program code to prepare for the CI/CD pipeline.

Which AWS service should the team use to store the program code?

Options:

A.

AWS CodeDeploy

B.

AWS CodeArtifact

C.

AWS CodeCommit

D.

Amazon CodeGuru

Discussion
Question 67

A developer needs to migrate an online retail application to AWS to handle an anticipated increase in traffic. The application currently runs on two servers: one server for the web application and another server for the database. The web server renders webpages and manages session state in memory. The database server hosts a MySQL database that contains order details. When traffic to the application is heavy, the memory usage for the web server approaches 100% and the application slows down considerably.

The developer has found that most of the memory increase and performance decrease is related to the load of managing additional user sessions. For the web server migration, the developer will use Amazon EC2 instances with an Auto Scaling group behind an Application Load Balancer.

Which additional set of changes should the developer make to the application to improve the application's performance?

Options:

A.

Use an EC2 instance to host the MySQL database. Store the session data and the application data in the MySQL database.

B.

Use Amazon ElastiCache for Memcached to store and manage the session data. Use an Amazon RDS for MySQL DB instance to store the application data.

C.

Use Amazon ElastiCache for Memcached to store and manage the session data and the application data.

D.

Use the EC2 instance store to manage the session data. Use an Amazon RDS for MySQL DB instance to store the application data.

Discussion
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