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Amazon DVA-C02 Exam Syllabus Topics:

Section	Weight	Objectives
Topic 1: Security	26%	- Data security 1. Encryption using AWS KMS 2. Secure API access patterns - Application authentication and authorization 1. IAM roles and policies 2. Cognito user authentication
Topic 2: Troubleshooting and Optimization	18%	- Monitoring and logging 1. Amazon CloudWatch metrics and logs - Performance optimization 1. Fault tolerance and resilience patterns 2. Application performance tuning
Topic 3: Deployment	24%	- CI/CD and deployment strategies 1. AWS CodePipeline workflows 2. AWS CodeBuild and CodeDeploy usage - Infrastructure as code 1. AWS CloudFormation templates
Topic 4: Development with AWS Services	32%	- Application development and integration 1. API Gateway and REST APIs 2. Event-driven architectures with SNS/SQS - AWS core services development 1. Amazon DynamoDB integration patterns 2. AWS Lambda functions development 3. Amazon S3 usage in applications

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Amazon AWS Certified Developer - Associate Sample Questions (Q660-Q665):

NEW QUESTION # 660
A developer needs to launch a new Amazon EC2 instance by using the AWS CLI.
Which AWS CLI command should the developer use to meet this requirement?

A. aws ec2 run-instances
B. aws ec2 confirm-product-instance
C. aws ec2 bundle-instance
D. aws ec2 start-instances

Answer: A

Explanation:
So, to create a new EC2 instance using the AWS CLI, you would typically use the aws ec2 run- instances command, providing the necessary parameters such as the AMI ID, instance type, security groups, and key pair, among others.

NEW QUESTION # 661
A developer maintains applications that store several secrets in AWS Secrets Manager. The applications use secrets that have changed over time. The developer needs to identify required secrets that are still in use. The developer does not want to cause any application downtime.
What should the developer do to meet these requirements?

A. Configure an AWS CloudTrail log file delivery to an Amazon S3 bucket. Create an Amazon CloudWatch alarm for the GetSecretValue. Secrets Manager API operation requests
B. Create a secrets manager-secret-unused AWS Config managed rule. Create an Amazon EventBridge rule to Initiate notification when the AWS Config managed rule is met.
C. Deactivate the applications secrets and monitor the applications error logs temporarily.
D. Configure AWS X-Ray for the applications. Create a sampling rule lo match the GetSecretValue Secrets Manager API operation requests.

Answer: B

Explanation:
This solution will meet the requirements by using AWS Config to monitor and evaluate whether Secrets Manager secrets are unused or have been deleted, based on specified time periods. The secrets manager-secret- unused managed rule is a predefined rule that checks whether Secrets Manager secrets have been rotated within a specified number of days or have been deleted within a specified number of days after last accessed date. The Amazon EventBridge rule will trigger a notification when the AWS Config managed rule is met, alerting the developer about unused secrets that can be removed without causing application downtime.
Option A is not optimal because it will use AWS CloudTrail log file delivery to an Amazon S3 bucket, which will incur additional costs and complexity for storing and analyzing log files that may not contain relevant information about secret usage. Option C is not optimal because it will deactivate the application secrets and monitor the application error logs temporarily, which will cause application downtime and potential data loss.
Option D is not optimal because it will use AWS X-Ray to trace secret usage, which will introduce additional overhead and latency for instrumenting and sampling requests that may not be related to secret usage.
References: [AWS Config Managed Rules], [Amazon EventBridge]

NEW QUESTION # 662
A developer is automating a new application deployment with AWS SAM. The new application has one AWS Lambda function and one Amazon S3 bucket. The Lambda function must access the S3 bucket to only read objects.
How should the developer configure AWS SAM to grant the necessary read permission to the S3 bucket?

A. Create an Amazon SQS topic for only S3 object reads. Reference the topic in the template.
B. Add a custom S3 bucket policy to the Lambda function.
C. Add the S3ReadPolicy template to the Lambda function's execution role.
D. Reference a second Lambda authorizer function.

Answer: C

NEW QUESTION # 663
A company is developing a new application that uses Amazon EC2, Amazon S3, and AWS Lambda resources. The company wants to allow employees to access the AWS Management Console by using existing credentials that the company stores and manages in an on-premises Microsoft Active Directory. Each employee must have a specific level of access to the AWS resources that is based on the employee's role.
Which solution will meet these requirements with the LEAST operational overhead?

A. Use LDAP to directly integrate the on-premises Active Directory with AWS Identity and Access Management (IAM). Map Active Directory groups to IAM roles to control access to AWS resources.
B. Configure Amazon Cognito to federate users into the on-premises Active Directory. Use Cognito user pools to manage user identities and to manage user access to the AWS resources.
C. Configure AWS Directory Service to create an Active Directory in AWS Directory Service for Microsoft Active Directory. Establish a trust relationship with the on-premises Active Directory.
Configure IAM roles and trust policies to give the employees access to the AWS resources.
D. Implement a custom identity broker to authenticate users into the on-premises Active Directory.
Configure the identity broker to use AWS Security Token Service (AWS STS) to grant authorized users IAM role based access to the AWS resources.

Answer: C

NEW QUESTION # 664
A company is migrating an on-premises database to Amazon RDS for MySQL. The company has read- heavy workloads. The company wants to refactor the code to achieve optimum read performance for queries.
Which solution will meet this requirement with LEAST current and future effort?

A. Use a multi-AZ Amazon RDS deployment. Modify the code so that queries access the secondary RDS instance.
B. Use open source replication software to create a copy of the MySQL database on an Amazon EC2 instance. Modify the application code so that queries use the IP address of the EC2 instance.
C. Use a multi-AZ Amazon RDS deployment. Increase the number of connections that the code makes to the database or increase the connection pool size if a connection pool is in use.
D. Deploy Amazon RDS with one or more read replicas. Modify the application code so that queries use the URL for the read replicas.

Answer: D

Explanation:
https://aws.amazon.com/rds/features/read-replicas/

NEW QUESTION # 665
......

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