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The Amazon DVA-C02 practice questions come with three easy-to-use and install formats. The certification for the Amazon DVA-C02 exam is a valuable, well-recognized professional credential. You can develop your skills and become a recognized specialist with the AWS Certified Developer - Associate DVA-C02 Certification in addition to learning about new technology requirements.

Amazon DVA-C02 Exam Syllabus Topics:

Section	Weight	Objectives
Topic 1: Security	26%	- Manage sensitive data in application code 1. Environment variables 2. AWS Secrets Manager 3. AWS Systems Manager Parameter Store 4. Encryption of data at rest and in transit - Implement encryption by using AWS services 1. Amazon S3 encryption 2. AWS Certificate Manager 3. AWS CloudHSM 4. AWS KMS 5. AWS Secrets Manager - Implement authentication and/or authorization for applications and AWS services 1. Bearer tokens (JWT, OAuth, AWS STS) 2. Identity federation (SAML, OpenID Connect, Amazon Cognito) 3. Resource-based policies, service policies, and principal policies 4. Role-based access control (RBAC) 5. User pools and identity pools in Amazon Cognito
Topic 2: Development with AWS Services	32%	- Develop code for applications hosted on AWS 1. Amazon Cognito 2. AWS Lambda 3. Amazon SQS 4. AWS SDKs 5. AWS CloudFormation 6. AWS CLI 7. Amazon DynamoDB 8. Amazon API Gateway 9. Amazon S3 10. Amazon SNS - Develop code for AWS serverless applications 1. Amazon EventBridge 2. AWS AppSync 3. Amazon API Gateway 4. AWS Step Functions - Use data stores in application development 1. Amazon EFS 2. Amazon ElastiCache 3. Amazon DynamoDB 4. Amazon RDS 5. Amazon S3
Topic 3: Deployment	24%	- Deploy code by using AWS CI/CD services 1. Blue/green deployments 2. GitHub integration 3. AWS CodePipeline 4. AWS CodeDeploy 5. Rolling deployments 6. AWS CodeCommit 7. AWS CodeBuild 8. Canary deployments - Test applications in development environments 1. Mocking AWS services 2. AWS SAM local 3. Local testing of Lambda functions - Prepare application artifacts to be deployed to AWS 1. Docker containers 2. AWS CloudFormation 3. AWS SAM 4. AWS CDK 5. Lambda deployment packages - Automate deployment testing 1. AWS CodePipeline 2. AWS CodeDeploy 3. AWS CodeCommit 4. AWS CodeBuild
Topic 4: Troubleshooting and Optimization	18%	- Optimize applications by using AWS services and features 1. Data storage optimization 2. Cost optimization 3. Concurrency and throttling 4. Caching strategies (ElastiCache, CloudFront) 5. Memory and compute optimization - Instrument code for observability 1. AWS X-Ray 2. Structured logging 3. Amazon CloudWatch alarms 4. Custom metrics 5. Amazon CloudWatch metrics - Assist in a root cause analysis 1. Application logging 2. AWS X-Ray 3. Amazon CloudWatch Logs 4. Error handling and retries 5. AWS CloudTrail

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Amazon AWS Certified Developer - Associate Sample Questions (Q328-Q333):

NEW QUESTION # 328
A developer has written a distributed application that uses microservices. The microservices are running on Amazon EC2 instances. Because of message volume, the developer is unable to match log output from each microservice to a specific transaction. The developer needs to analyze the message flow to debug the application.
Which combination of steps should the developer take to meet this requirement? (Choose two.)

A. Add the AWS X-Ray software development kit (SDK) to the microservices. Use X-Ray to trace requests that each microservice makes.
B. Configure an interface VPC endpoint to allow traffic to reach the global AWS X-Ray daemon on TCP port 2000.
C. Download the AWS X-Ray daemon. Install the daemon on an EC2 instance. Ensure that the EC2 instance allows UDP traffic on port 2000.
D. Enable AWS X-Ray. Configure Amazon CloudWatch to push logs to X-Ray.
E. Set up Amazon CloudWatch metric streams to collect streaming data from the microservices.

Answer: A,C

NEW QUESTION # 329
A developer has written the following IAM policy to provide access to an Amazon S3 bucket:

Which access does the policy allow regarding the s3:GetObject and s3:PutObject actions?

A. Access on all buckets except the "DOC-EXAMPLE-BUCKET" bucket
B. Access on all objects in the "DOC-EXAMPLE-BUCKET" bucket except on objects that start with
"secrets"
C. Access on all objects in the "DOC-EXAMPLE-BUCKET" bucket along with access to all S3 actions for objects in the "DOC-EXAMPLE-BUCKET" bucket that start with "secrets"
D. Access on all buckets that start with "DOC-EXAMPLE-BUCKET" except the "DOC-EXAMPLE- BUCKET/secrets" bucket

Answer: B

Explanation:
https://aws.amazon.com/blogs/security/iam-policies-and-bucket-policies-and-acls-oh-my- controlling-access-to-s3-resources/

NEW QUESTION # 330
A developer is working on an ecommerce website The developer wants to review server logs without logging in to each of the application servers individually. The website runs on multiple Amazon EC2 instances, is written in Python, and needs to be highly available How can the developer update the application to meet these requirements with MINIMUM changes?

A. Rewrite the application to be cloud native and to run on AWS Lambda, where the logs can be reviewed in Amazon CloudWatch
B. Install the unified Amazon CloudWatch agent on the EC2 instances Configure the agent to push the application logs to CloudWatch
C. Scale down the application to one larger EC2 instance where only one instance is recording logs
D. Set up centralized logging by using Amazon OpenSearch Service, Logstash, and OpenSearch Dashboards

Answer: B

Explanation:
* Centralized Logging Benefits: Centralized logging is essential for operational visibility in scalable systems, especially those using multiple EC2 instances like our e-commerce website. CloudWatch provides this capability, along with other monitoring features.
* CloudWatch Agent: This is the best way to send custom application logs from EC2 instances to CloudWatch. Here's the process:
* Install the CloudWatch agent on each EC2 instance.
* Configure the agent with a configuration file, specifying:
* Which log files to collect.
* The format in which to send logs to CloudWatch (e.g., JSON).
* The specific CloudWatch Logs log group and log stream for these logs.
* Viewing and Analyzing Logs: Once the agent is pushing logs, use the CloudWatch Logs console or API:
* View and search the logs across all instances.
* Set up alarms based on log events.
* Use CloudWatch Logs Insights for sophisticated queries and analysis.
References:
* Amazon CloudWatch Logs: https://docs.aws.amazon.com/AmazonCloudWatch/latest/logs
/WhatIsCloudWatchLogs.html
* Unified CloudWatch Agent: https://docs.aws.amazon.com/AmazonCloudWatch/latest/logs
/AgentReference.html
* CloudWatch Logs Insights: https://docs.aws.amazon.com/AmazonCloudWatch/latest/logs
/AnalyzingLogData.html

NEW QUESTION # 331
A developer is troubleshooting an application in an integration environment. In the application, an Amazon Simple Queue Service (Amazon SQS) queue consumes messages and then an AWS Lambda function processes the messages. The Lambda function transforms the messages and makes an API call to a third-party service.
There has been an increase in application usage. The third-party API frequently returns an HTTP 429 Too Many Requests error message. The error message prevents a significant number of messages from being processed successfully.
How can the developer resolve this issue?

A. Configure maximum concurrency on the SQS event source based on the third-party service's documented rate limits.
B. Increase the SQS event source's batch size setting.
C. Increase the retry attempts and maximum event age in the Lambda function's asynchronous configuration.
D. Configure provisioned concurrency for the Lambda function based on the third-party API's documented rate limits.

Answer: A

Explanation:
Maximum concurrency for SQS as an event source allows customers to control the maximum concurrent invokes by the SQS event source1. When multiple SQS event sources are configured to a function, customers can control the maximum concurrent invokes of individual SQS event source1.
In this scenario, the developer needs to resolve the issue of the third-party API frequently returning an HTTP
429 Too Many Requests error message, which prevents a significant number of messages from being processed successfully. To achieve this, the developer can follow these steps:
Find out the documented rate limits of the third-party API, which specify how many requests can be made in a given time period.
Configure maximum concurrency on the SQS event source based on the rate limits of the third-party API.
This will limit the number of concurrent invokes by the SQS event source and prevent exceeding the rate limits of the third-party API.
Test and monitor the application performance and adjust the maximum concurrency value as needed.
By using this solution, the developer can reduce the frequency of HTTP 429 errors and improve the message processing success rate. The developer can also avoid throttling or blocking by the third-party API.

NEW QUESTION # 332
A company is creating an application that processes csv files from Amazon S3 A developer has created an S3 bucket The developer has also created an AWS Lambda function to process the csv files from the S3 bucket Which combination of steps will invoke the Lambda function when a csv file is uploaded to Amazon S3?
(Select TWO.)

A. Create an Amazon EventBridge rule Configure the rule with a pattern to match the S3 object created event
B. Create a new Lambda function to scan the S3 bucket for recently added S3 objects
C. Add a trigger to the existing Lambda function. Set the trigger type to EventBridge Select the Amazon EventBridge rule.
D. Add S3 Lifecycle rules to invoke the existing Lambda function
E. Schedule an Amazon EventBridge rule to run a new Lambda function to scan the S3 bucket.

Answer: A,D

Explanation:
* Amazon EventBridge: A service that reacts to events from various AWS sources, including S3. Rules define which events trigger actions (like invoking Lambda functions).
* S3 Object Created Events: EventBridge can detect these, providing seamless integration for automated CSV processing.
* S3 Lifecycle Rules: Allow for actions based on object age or prefixes. These can directly trigger Lambda functions for file processing.
References:
* Amazon EventBridge Documentation: https://docs.aws.amazon.com/eventbridge/
* Working with S3 Event Notifications: https://docs.aws.amazon.com/AmazonS3/latest/userguide
/EventNotifications.html
* S3 Lifecycle Configuration: https://docs.aws.amazon.com/AmazonS3/latest/userguide/object-lifecycle- mgmt.html

NEW QUESTION # 333
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