AWS-DA(90-100)

A developer is in the process of transferring legacy apps to AWS. These apps will be launched on Amazon EC2 instances and will utilize MongoDB as their main data storage. Management expects developers to make minimal modifications to apps while using AWS services. Which option should the developer use to host MongoDB on Amazon Web Services (AWS)?

A. Install MongoDB on the same instance where the application is running.

B. Deploy Amazon DocumentDB in MongoDB compatibility mode.

C. Use Amazon API Gateway to translate API calls from MongoDB to Amazon DynamoDB.

D. Replicate the existing MongoDB workload to Amazon DynamoDB.

Through an API, a company's fleet of Amazon EC2 instances collects data from millions of consumers. To guarantee high access rates, the servers batch the data, create an object for each user, and upload the objects to an S3 bucket. Customer ID, Server ID, TS-Server (TimeStamp and Server ID), the object's size, and a timestamp are the object's properties. A developer wishes to locate all items gathered for a particular user during a certain time period. How can the developer accomplish this need after establishing an S3 object created event?

A. Run an AWS Lambda function in response to the S3 object creation events that creates an Amazon DynamoDB record for every object with the Customer ID as the partition key and the Server ID as the sort key. Retrieve all the records using the Customer ID and Server ID attributes.

B. Run an AWS Lambda function in response to the S3 object creation events that creates an Amazon Redshift record for every object with the Customer ID as the partition key and TS-Server as the sort key. Retrieve all the records using the Customer ID and TS-Server attributes.

C. Run an AWS Lambda function in response to the S3 object creation events that creates an Amazon DynamoDB record for every object with the Customer ID as the partition key and TS-Server as the sort key. Retrieve all the records using the Customer ID and TS-Server attributes.

D. Run an AWS Lambda function in response to the S3 object creation events that creates an Amazon Redshift record for every object with the Customer ID as the partition key and the Server ID as the sort key. Retrieve all the records using the Customer ID and Server ID attributes.

A business need a fully managed source control solution that is compatible with AWS. By sharing sets of changes peer-to-peer, the service must guarantee that revision control synchronizes various dispersed repositories. All users must be productive regardless of whether they are connected to a network. Which version control system should I use?

A. Subversion

B. AWS CodeBuild

C. AWS CodeCommit

D. AWS CodeStar

A developer is tasked with the responsibility of creating a cache layer in front of Amazon RDS. In the event of a service outage, it is costly to regenerate cached material. Which of the following implementations would work best in terms of uptime?

A. Implement Amazon ElastiCache Redis in Cluster Mode

B. Install Redis on an Amazon EC2 instance.

C. Implement Amazon ElastiCache Memcached.

D. Migrate the database to Amazon Redshift.

On an Amazon EC2 instance, a developer is executing an application. When the program attempts to read from an Amazon S3 bucket, it fails. The developer discovers that the S3 read permission is missing from the related IAM role. The developer must enable the application to read from the S3 bucket. Which solution satisfies this need with the MINIMUM amount of application downtime?

A. Add the permission to the role. Terminate the existing EC2 instance. Launch a new EC2 instance

B. Add the permission to the role so that the change will take effect automatically Most Voted

C. Add the permission to the role. Hibernate and restart the existing EC2 instance.

D. Add the permission to the S3 bucket. Restart the EC2 instance.

A developer wishes to get a list of objects from an Amazon DynamoDB table's global secondary index. Which DynamoDB API call should the developer use to utilize the fewest read capacity units possible?

A. Scan operation using eventually-consistent reads

B. Query operation using strongly-consistent reads

C. Query operation using eventually-consistent reads Most Voted

D. Scan operation using strongly-consistent reads

A corporation is deploying one of their apps using AWS CodePipeline. The delivery pipeline is triggered by modifications to the master branch of an AWS CodeCommit repository and utilizes AWS CodeBuild for the test and build phases, as well as AWS CodeDeploy for application deployment. For many months, the pipeline has operated effectively with no adjustments. AWS CodeDeploy failed to deploy the updated application as planned after a recent modification to the application's source code. What may be the underlying causes? (Select two.)

A. The change was not made in the master branch of the AWS CodeCommit repository.

B. One of the earlier stages in the pipeline failed and the pipeline has terminated.

C. One of the Amazon EC2 instances in the company's AWS CodePipeline cluster is inactive.

D. The AWS CodePipeline is incorrectly configured and is not executing AWS CodeDeploy.

E. AWS CodePipeline does not have permissions to access AWS CodeCommit.

A developer is attempting to use the SDK to perform API requests. The application's IAM user credentials need multi-factor authentication for all API requests. Which mechanism does the developer use to get access to the API that is protected by multi-factor authentication?

A. GetFederationToken

B. GetCallerIdentity

C. GetSessionToken

D. DecodeAuthorizationMessage

There are two categories of members on a video-hosting website: those who pay a charge and those who do not. Each video upload creates a message in Amazon Simple Queue Service (SQS). Each video is processed by a fleet of Amazon EC2 instances that poll Amazon SQS. The developer must guarantee that the developer processes the films submitted by paying users first. How is the developer to achieve this criterion?

A. Create two SQS queues: one for paying members, and one for non-paying members. Poll the paying member queue first and then poll the non-paying member queue.

B. Use SQS to set priorities on individual items within a single queue; give the paying members' videos the highest priority.

C. Use SQS to set priorities on individual items within a single queue and use Amazon SNS to encode the videos.

D. Create two Amazon SNS topics: one for paying members and one for non-paying members. Use SNS topic subscription priorities to differentiate between the two types of members.

"A development team is composed of ten individuals. The manager want to offer access to user-specific folders in an Amazon S3 bucket, similar to a home directory for each team member. The sample of the IAM policy for the team member with the username €TeamMemberX€ is as follows:

Rather of generating unique policies for each team member, how may this policy excerpt be made general for all team members?"

A. Use IAM policy condition

B. Use IAM policy principal

C. Use IAM policy variables Most Voted

D. Use IAM policy resource