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The Amazon DVA-C01 (AWS Certified Developer Associate) Certification Exam is a highly sought-after certification for developers who want to demonstrate their skills and knowledge of AWS development services. This certification exam covers a broad range of topics related to AWS development services, such as AWS Elastic Beanstalk, AWS Lambda, and AWS DynamoDB. The exam is designed to test a candidate's ability to design, develop, and deploy cloud-based solutions using AWS services.

The Amazon DVA-C01 certification exam consists of 65 multiple-choice questions and has a time limit of 130 minutes. The exam can be taken at a testing center or remotely through online proctoring. Candidates who pass the exam will receive an official certification from AWS, which can be used to demonstrate their expertise in AWS development to potential employers or clients. Additionally, AWS offers a range of study materials, including official training courses, practice exams, and sample questions, to help candidates prepare for the exam and achieve certification.

Amazon AWS Certified Developer Associate Exam Sample Questions (Q569-Q574):

NEW QUESTION # 569
A Developer has created a Lambda function and is finding that the function is taking longer to complete than expected. After some debugging, the Developer has discovered that increasing compute capacity would improve performance.
How can the Developer increase the Lambda compute resources?

A. Run on a larger instance size with more compute capacity.
B. Increase the maximum execution time.
C. Specify a larger compute capacity when calling the Lambda function.
D. Increase the allocated memory for the Lambda function.

Answer: C

NEW QUESTION # 570
A developer has written an Amazon Kinesis Data Streams application. As usage grows and traffic increases over time, the application is regularly receiving ProvisionedThroughputExceededException error messages Which steps should the developer take to resolve the error? (Select TWO.)

A. Specify a shard iterator using the Shardlterator parameter.
B. Use Auto Scaling to scale the stream for better performance
C. Increase the delay between the GetRecords call and the PutRecords call.
D. Implement exponential backoff on the GetRecords call and the PutRecords call.
E. Increase the number of shards in the data stream

Answer: A,E

Explanation:
Reference:
https://docs.aws.amazon.com/streams/latest/dev/troubleshooting-consumers.html

NEW QUESTION # 571
A Developer has implemented a Lambda function that needs to add new customers to an RDS database that is expected to run hundreds of times per hour. The Lambda function is configured to use 512MB of RAM and is based on the following pseudo code:

After testing the Lambda function, the Developer notices that the Lambda execution time is much longer than expected. What should the Developer do to improve performance?

A. Move the database connection and close statement out of the handler. Place the connection in the global space.
B. Increase the amount of RAM allocated to the Lambda function, which will increase the number of threads the Lambda can use.
C. Increase the size of the RDS database to allow for an increased number of database connections each hour.
D. Replace RDS wit Amazon DynamoDB to implement control over the number of writes per second.

Answer: A

Explanation:
Explanation
Refer AWS documentation - Lambda Best Practices
Take advantage of Execution Context reuse to improve the performance of your function. Make sure any externalized configuration or dependencies that your code retrieves are stored and referenced locally after initial execution. Limit the re-initialization of variables/objects on every invocation. Instead use static initialization/constructor, global/static variables and singletons. Keep alive and reuse connections (HTTP, database, etc.) that were established during a previous invocation.

NEW QUESTION # 572
How can software determine the public and private IP addresses of the Amazon EC2 instance that it is running on?

A. Query the local instance userdata.
B. Query the local instance metadata.
C. Use ipconfig or ifconfig command.
D. Query the appropriate Amazon CloudWatch metric.

Answer: B

Explanation:
https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/instancedata-data-categories.html Data: local-hostname Descriptions: The private IPv4 DNS hostname of the instance. In cases where multiple network interfaces are present, this refers to the eth0 device (the device for which the device number is 0). Data: public-ipv4 Descriptions: The public IPv4 address. If an Elastic IP address is associated with the instance, the value returned is the Elastic IP address.

NEW QUESTION # 573
A current architecture uses many Lambda functions invoking one another as a large state machine. The coordination of this state machine is legacy custom code that breaks easily.
Which AWS Service can help refactor and manage the state machine?

A. AWS Step Functions
B. AWS SNS with AWS SQS
C. Amazon Elastic MapReduce
D. AWS Data Pipeline

Answer: A

NEW QUESTION # 574
......

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