2023 Amazon Valid DVA-C01: AWS Certified Developer Associate Exam Valid Practice Questions

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The AWS Certified Developer Associate certification is a valuable certification for developers who want to advance their careers and demonstrate their expertise in developing cloud-based applications using AWS. AWS Certified Developer Associate Exam certification is recognized globally and is in high demand by employers. With this certification, developers can demonstrate their proficiency in AWS services and their ability to develop, deploy and troubleshoot cloud-based applications.

The Amazon DVA-C01 exam covers a wide range of topics, including AWS core services, database technologies, deployment models, and security best practices. Candidates are expected to have a thorough understanding of AWS services such as EC2, S3, Lambda, DynamoDB, and Elastic Beanstalk, and their corresponding programming languages such as Java, Python, and Node.js.

DVA-C01 Valid Practice Questions

Quiz Amazon - DVA-C01 - AWS Certified Developer Associate Exam –High Pass-Rate Valid Practice Questions

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Amazon AWS Certified Developer Associate Exam Sample Questions (Q395-Q400):

NEW QUESTION # 395
In a move toward using microservices, a company's Management team has asked all Development teams to build their services so that API requests depend only on that service's data store. One team is building a Payments service which has its own database; the service needs data that originates in the Accounts database. Both are using Amazon DynamoDB.
What approach will result in the simplest, decoupled, and reliable method to get near-real time updates from the Accounts database?

A. Use Amazon Glue to perform frequent ETL updates from the Accounts database to the Payments database.
B. Use Amazon ElastiCache in Payments, with the cache updated by triggers in the Accounts database.
C. Use Amazon Kinesis Data Firehouse to deliver all changes from the Accounts database to the Payments database.
D. Use Amazon DynamoDB Streams to deliver all changes from the Accounts database to the Payments database.

Answer: D

NEW QUESTION # 396
If a message is retrieved from a queue in Amazon SQS, how long is the message inaccessible to other users by default?

A. 0 seconds
B. forever
C. 1 day
D. 1 hour
E. 30 seconds

Answer: E

Explanation:
Reference:
https://docs.aws.amazon.com/AWSSimpleQueueService/latest/SQSDeveloperGuide/sqs-visibility-timeout.html Visibility timeout:
default value = 30 seconds,
minimum = 0 seconds,
maximum = 12 hours

NEW QUESTION # 397
A company is running an application built on AWS Lambda functions. One Lambda function has performance issues when it has to download a 50MB file from the Internet in every execution. This function is called multiple times a second.
What solution would give the BEST performance increase?

A. Increase the Lambda maximum execution time
B. Cache the file in the /tmp directory
C. Cache the file in Amazon S3
D. Put an Elastic Load Balancer in front of the Lambda function

Answer: B

Explanation:
https://docs.aws.amazon.com/lambda/latest/dg/runtimes-context.html

NEW QUESTION # 398
An application stores payroll information nightly in DynamoDB for a large number of employees across hundreds of offices. Item attributes consist of individual name, office identifier, and cumulative daily hours. Managers run reports for ranges of names working in their office. One query is. "Return all Items in this office for names starting with A through E".
Which table configuration will result in the lowest impact on provisioned throughput for this query?

A. Configure the table to have a range index on the name attribute, and a hash index on the office identifier
B. Configure a hash index on the office Identifier attribute and no range index
C. Configure the table to have a hash index on the name attribute, and a range index on the office identifier
D. Configure a hash index on the name attribute and no range index

Answer: A

Explanation:
https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/HowItWorks.CoreComponents.html Partition key and sort key - Referred to as a composite primary key, this type of key is composed of two attributes. The first attribute is the partition key, and the second attribute is the sort key. DynamoDB uses the partition key value as input to an internal hash function. The output from the hash function determines the partition (physical storage internal to DynamoDB) in which the item will be stored. All items with the same partition key value are stored together, in sorted order by sort key value.

NEW QUESTION # 399
A company's security policies require all database passwords to be rotated every 30 days The company uses different database platforms, including Amazon Aurora databases and proprietary NoSQL document databases, for different applications A developer needs to implement a solution for password rotation Which solution will meet these requirements?

A. Create an AWS Lambda rotation function that has appropriate IAM permissions Store the password in AWS Secrets Manager Configure Secrets Manager to rotate the password by using the Lambda function
B. Integrate AWS Systems Manager Parameter Store with a Key Management Interoperability Protocol (KMIP)-compliant third-party secret manager to enable third-party database password rotation on AWS
C. Create an AWS Lambda rotation function that has appropriate IAM permissions Store the password in AWS Systems Manager Parameter Store Configure Parameter Store to rotate the password by using the Lambda function
D. Encrypt the existing password with AWS Key Management Service (AWS KMS) Export the existing password Generate a random password with AWS KMS Use the AWS KMS password renewal feature to replace the existing password with the new password.

Answer: C

NEW QUESTION # 400
......

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