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DVA-C01 Exam Questions

Exam Code:
DVA-C01
Exam Name:
AWS Certified Developer Associate Exam
Last Update: Jan 18, 2022
514 Questions
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DVA-C01 Exam Questions

DVA-C01 Exam Details

Format: Multiple choice, Multiple Answer
Exam Type: Associate
Exam Method: Testing center or online proctored exam
Time: 130 Min
Exam Price: $150 USD
Language: Available in English, Japanese, Korean, and Simplified Chinese

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AWS Certified Developer Associate Exam Questions and Answers

Questions 1

A Developer is designing a fault-tolerant environment where client sessions will be saved.

How can the Developer ensure that no sessions are lost if an Amazon EC2 instance fails?

Options:

A.

Use sticky sessions with an Elastic Load Balancer target group.

B.

Use Amazon SQS to save session data.

C.

Use Amazon DynamoDB to perform scalable session hadling.

D.

Use Elastic Load Balancer connection draining to stop sending requests to failing instances.

Questions 2

A company has a three-tier application that is deployed in Amazon Elastic Container Service (Amazon ECS). The application is using an Amazon RDS for MySQL DB Instance The application performs more database reads than writes.

During times of peak usage. the application's performance degrades. When this performance degradation occurs, the DB instance's ReadLatency metric in Amazon CloudWatch increases suddenly

How should a developer modify the application to improve performance?

Options:

A.

Use Amazon ElastiCache to cache query results

B.

Scale the ECS cluster to contain more ECS instances

C.

Add read capacity units (RCUs) to the DB instance.

D.

Modify the ECS task definition to increase the task memory

Questions 3

A Developer has an application that can upload tens of thousands of objects per second to Amazon S3 in parallel within a single AWS account. As part of new requirements, data stored in S3 must use server side encryption with AWS KMS (SSE-KMS). After creating this change, performance of the application is slower.

Which of the following is MOST likely the cause of the application latency?

Options:

A.

Amazon S3 throttles the rate at which uploaded objects can be encrypted using Customer Master Keys.

B.

The AWS KMS API calls limit is less than needed to achieve the desired performance.

C.

The client encryption of the objects is using a poor algorithm.

D.

KMS requires that an alias be used to create an independent display name that can be mapped to a CMK.

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