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DVA-C01 Exam Dumps - AWS Certified Developer Associate Exam

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Question # 81

A company is running a custom application on a set of on-premises Linux servers that are accessed using Amazon API Gateway. AWS X-Ray tracing has been enabled on the API test stage

How can a developer enable X-Ray tracing on the on-premises servers with the LEAST amount of configuration''

Install and run the X-Ray SDK on the on-premises servers to capture and relay the data to the X-Ray service.

Install and run the X-Ray daemon on the on-premises servers to capture and relay the data to the X-Ray service

Capture incoming requests on-premises and configure an AWS Lambda function to pull, process, and relay relevant data to X-Ray using the PutTraceSegments API call

Capture incoming requests on-premises and configure an AWS Lambda function to pull, process, and relay relevant data to X-Ray using the PutTelemetryRecords API call.

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Question # 82

A company has a new application. The company needs to secure sensitive configuration data such as database connection strings, application license codes, and API keys that the application uses to access external resources. The company must track access to the configuration data for auditing purposes. The resources are managed outside the application.

The company is not required to manage rotation of the connection strings, license codes, and API keys in the application. The company must implement a solution to securely store the configuration data and to give the application access to the configuration data. The solution must comply with security best practices.

Which solution will meet these requirements MOST cost-effectively?

Store the configuration data in an encrypted file on the source code bundle. Grant the application access by using IAM policies.

Store the configuration data in AWS Systems Manager Parameter Store. Grant the application access by using IAM policies.

Store the configuration data on an Amazon Elastic Block Store (Amazon EBS) encrypted volume. Attach the EBS volume to an Amazon EC2 instance to provide the application with access to the data.

Store the configuration data in AWS Secrets Manager. Grant the application access by using IAM policies.

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Question # 83

An application adds a processing date to each transaction that it receives. The application writes each transaction to an Amazon DynamoDB table by using the Putitem operation. Each transaction has a unique ID (transactionlD). Sometimes the application receives transactions more than once.

A developer notices that duplicate transactions in DynamoDB have the latest processing date instead of the date when the transaction was first received. Duplicate records happen infrequently, and most of the transactions are unique.

What is the MOST cost-effective solution that the developer can implement to ensure that Putltem does not update an existing record?

Call the Getltem operation first to confirm that the record does not exist. Then call Putltem

Enable the TTL attribute on the DynamoDB table.

Implement a conditional put by using the attribute_exists(transactionlD) condition expression.

Implement a conditional put by using the attribute_not_exists(transactionlD) condition expression.

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Question # 84

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?

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

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.

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

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

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Question # 85

A developer is building varKHJS microservices for an application that will run on Amazon EC2 instances. The developer needs to monitor the end-to-end view of the requests between the microservices and debug any issues in the various microservices.

What should the developer do to accomplish these tasks?

Use Amazon CloudWatch to aggregate the microservices' logs and metrics, and build the monitoring dashboard

Use AWS CloudTrail to aggregate the microservices' logs and metrics, and build the monitoring dashboard

Use the AWS X-Ray SDK to add instrumentation in all the microsen/ices, and monitor using the X-Ray service map.

Use AWS Health to monitor the health of all the microservices

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Question # 86

A developer has an application that is composed of many different AWS Lambda functions. The Lambda functions all use some of the same dependencies. To avoid security issues, the developer is constantly updating the dependencies of all of the Lambda functions. The result is duplicated effort for each function.

Now can the developer keep the dependencies of the Lambda functions up to date with the LEAST additional complexity?

Define a maintenance window for the Lambda functions to ensure that the functions get updated copies of the dependencies.

Upgrade the Lambda functions to the most recent runtime version.

Define a Lambda layer that contains all of the shared dependencies.

Use an AWS CodeCommit repository to host the dependencies in a centralized location.

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Question # 87

An AWS Lambda function requires read access to an Amazon S3 bucket and requires read/write access to an Amazon DynamoDB table. The correct 1AM policy already exists. What is the MOST secure way to grant the Lambda function access to the S3 bucket and the DynamoDB table?

Attach the existing IAM policy to the Lambda function.

Create an IAM role for the Lambda function. Attach the existing IAM policy to the role. Attach the role to the Lambda function.

Create an IAM user with programmatic access. Attach the existing IAM policy to the user. Add the user access key ID and secret access key as environment variables in the Lambda function.

Add the AWS account root user access key ID and secret access key as encrypted environment variables in the Lambda function.

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Question # 88

A company has an application that uses Amazon Cognito user pools as an identity provider. The company must secure access to user records. The company I up multi-factor authentication (MFA). The company also wants to send a login activity notification by email every time a user logs in.

What is the MOST operationally efficient solution that meets this requirement?

Create an AWS Lambda function that uses Amazon Simple Email Service (Amazon SES) to send the email notification. Add an Amazon API Gateway to invoke the function. Call the API from the client side when login confirmation is received.

Create an AWS Lambda function that uses Amazon Simple Email Service (Amazon SES) to send the email notification. Add an Amazon Cognito post authentication Lambda trigger for the function.

Create an AWS Lambda function that uses Amazon Simple Email Service (Amazon SES) to send the email notification. Create an Amazon CloudWatch Logs log subscription filter to invoke the function based on the login status.

Configure Amazon Cognito to stream all logs to Amazon Kinesis Data Firehose. Create an AWS Lambda function to process the streamed logs and it send the email notification based on the login status of each user.

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