Online Access Free Amazon.AWS-Certified-Developer-Associate.v2021-10-14.q421 Practice Test (Page 80)

AWS-Certified-Developer-Associate Exam Question 391

A company has an application where reading objects from Amazon S3 is based on the type of user. The user types are registered user and guest user. The company has 25,000 users and is growing. Information is pulled from an S3 bucket depending on the user type.
Which approaches are recommended to provide access to both user types? (Choose two.)

A.Use Amazon Cognito to provide access using authenticated and unauthenticated roles.

B.Use S3 bucket policies to restrict read access to specific IAM users.

C.Create a new IAM user for each user and grant read access.

D.Provide a different access key and secret access key in the application code for registered users and guest users to provide read access to the objects.

E.Use the AWS IAM service and let the application assume the different roles using the AWS Security Token Service (AWS STS) AssumeRole action depending on the type of user and provide read access to Amazon S3 using the assumed role.

AWS-Certified-Developer-Associate Exam Question 392

A developer is updating an application deployed on AWS Elastic Beanstalk The new version is incompatible with the old version To successfully deploy the update, a full cutover to the new updated version must be performed on all instances at one time, with the ability to roll back changes in case of a deployment failure in the new version How can this be performed with the LEAST amount of downtime?

A.Use the Elastic Beanstalk All at once deployment policy to update all instances simultaneously

B.Perform an Elastic Beanstalk Rolling deployment

C.Perform an Elastic Beanstalk Rolling with additional batch deployment

D.Deploy the new version in a new Elastic Beanstalk environment and swap environment URLs

AWS-Certified-Developer-Associate Exam Question 393

A Developer is creating an application that needs to locate the public IPv4 address of the Amazon EC2 instance on which it runs. How can the application locate this information?

A.Get the instance metadata by retrieving http://169.254.169.254/latest/metadata/.

B.Get the instance user data by retrieving http://169.254.169.254/latest/userdata/.

C.Get the application to run IFCONFIG to get the public IP address.

D.Get the application to run IPCONFIG to get the public IP address.

AWS-Certified-Developer-Associate Exam Question 394

A group of researchers is studying the migration pattern of a beetle that eats and destroys gram. The researchers must process massive amounts of data and run statistics. Which one of the following options provides the high performance computing for this purpose?

A.Launch enhanced network type instances in a placement group

B.Launch compute optimized (C4) instances in at least two Availability Zones

C.Launch AMI instances that support SR-IOV in a single Availability Zone

D.Configure an Autoscaling Scaling group to launch dozens of spot instances to run the statistical analysis simultaneously

AWS-Certified-Developer-Associate Exam Question 395

A user is creating an ELB with VPC. Which of the following options is available as a part of the
"Add EC2 instances" page?

A.Select Subnet

B.Select IAM

C.Select ENI

D.Select VPC

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