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Amazon DVA-C02 exam is a certification that validates the skills and knowledge of developers who want to work with Amazon Web Services (AWS). AWS Certified Developer - Associate certification is designed to test the candidate's proficiency in deploying, debugging, and maintaining AWS cloud-based applications. It also tests their understanding of AWS core services such as Lambda, S3, EC2, and DynamoDB.
Amazon DVA-C02 is an exam that tests the skills and knowledge of candidates who wish to become an AWS Certified Developer - Associate. AWS Certified Developer - Associate certification is ideal for developers who have experience with AWS services and want to demonstrate their expertise in designing, developing, and deploying cloud-based applications using AWS technologies.
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NEW QUESTION # 377
A developer is building a web application that uses Amazon API Gateway to expose an AWS Lambda function to process requests from clients. During testing, the developer notices that the API Gateway times out even though the Lambda function finishes under the set time limit.
Which of the following API Gateway metrics in Amazon CloudWatch can help the developer troubleshoot the issue? (Choose two.)
Answer: A,B
Explanation:
Amazon API Gateway is a service that enables developers to create, publish, maintain, monitor, and secure APIs at any scale. Amazon CloudWatch is a service that monitors AWS resources and applications. API Gateway provides several CloudWatch metrics to help developers troubleshoot issues with their APIs. Two of the metrics that can help the developer troubleshoot the issue of API Gateway timing out are:
IntegrationLatency: This metric measures the time between when API Gateway relays a request to the backend and when it receives a response from the backend. A high value for this metric indicates that the backend is taking too long to respond and may cause API Gateway to time out.
Latency: This metric measures the time between when API Gateway receives a request from a client and when it returns a response to the client. A high value for this metric indicates that either the integration latency is high or API Gateway is taking too long to process the request or response.
Reference:
[What Is Amazon API Gateway? - Amazon API Gateway]
[Amazon API Gateway Metrics and Dimensions - Amazon CloudWatch]
[Troubleshooting API Errors - Amazon API Gateway]
NEW QUESTION # 378
A developer is migrating some features from a legacy monolithic application to use AWS Lambda functions instead. The application currently stores data in an Amazon Aurora DB cluster that runs in private subnets in a VPC. The AWS account has one VPC deployed. The Lambda functions and the DB cluster are deployed in the same AWS Region in the same AWS account.
The developer needs to ensure that the Lambda functions can securely access the DB cluster without crossing the public internet.
Which solution will meet these requirements?
Answer: B
Explanation:
Explanation
This solution will meet the requirements by allowing the Lambda functions to access the DB cluster securely within the same VPC without crossing the public internet. The developer can configure a VPC endpoint for RDS in a private subnet and assign it to the Lambda functions. The developer can also configure a security group for the Lambda functions that allows inbound traffic from the DB cluster on port 3306 (MySQL).
Option A is not optimal because it will expose the DB cluster to public access, which may compromise its security and data integrity. Option B is not optimal because it will introduce additional latency and complexity to use an RDS database proxy for accessing the DB cluster from Lambda functions within the same VPC. Option C is not optimal because it will require additional costs and configuration to use a NAT gateway for accessing resources in private subnets from Lambda functions.
References: [Configuring a Lambda Function to Access Resources in a VPC]
NEW QUESTION # 379
A company has an AWS Step Functions state machine named myStateMachine. The company configured a service role for Step Functions. The developer must ensure that only the myStateMachine state machine can assume the service role.
Which statement should the developer add to the trust policy to meet this requirement?
Answer: C
Explanation:
Comprehensive Detailed Explanation with all AWS References
* Why Option A is Correct:
* The ArnLike condition with the specific ARN for myStateMachine ensures that only this state machine can assume the role. The format urn:aws:states is correct for specifying Step Functions resources.
* Why Other Options are Incorrect:
* Option B: Wildcards (*) in the ARN allow more resources to assume the role, which violates the requirement.
* Option C: This condition restricts the account but not the specific state machine.
* Option D: A StringNotEquals condition is used to deny specific values, which does not ensure exclusivity for the desired state machine.
* AWS Documentation References:
* IAM Trust Policies for Step Functions
NEW QUESTION # 380
A developer is troubleshooting an application mat uses Amazon DynamoDB in the uswest-2 Region. The application is deployed to an Amazon EC2 instance. The application requires read-only permissions to a table that is named Cars The EC2 instance has an attached IAM role that contains the following IAM policy.
When the application tries to read from the Cars table, an Access Denied error occurs.
How can the developer resolve this error?
Answer: B
Explanation:
https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/access-control-overview.html#access- control-resource-ownership
NEW QUESTION # 381
A developer for a company is configuring an AWS Lambda function to process monitoring alerts.
The developer needs to use Amazon EventBridge to invoke the Lambda function when an Amazon CloudWatch alarm state changes to ALARM. The developer needs to ensure the Lambda function is invoked for all CloudWatch alarms in the company's AWS account. Which solution will meet these requirements with the MOST operational efficiency?
Answer: D
Explanation:
CloudWatch alarm state changes are emitted as events that EventBridge can match. Creating a single EventBridge rule that matches the alarm state change event and targets the Lambda function automatically covers all alarms in the account without requiring per-alarm configuration, providing the highest operational efficiency.
NEW QUESTION # 382
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