A company is running a custom web application on Amazon EC2 instances behind an Application Load Balancer. The instances run in an Auto Scaling group. The company's development team is using AWS CloudFormation to deploy all the services. The application is time-consuming to install and configure when the development team launches a new instance
Which combination of steps should a developer take to optimize the performance when a new instance is launched? (Choose two.)
A. Use an AWS Marketplace Amazon Machine Image (AMI) with a prebuilt application.
B. Create a prebuilt Amazon Machine Image (AMI) with the application installed and configured.
C. Update the launch template resource in the CloudFormation template.
D. Use AWS Systems Manager Run Command to install and configure the application.
E. Use CloudFormation helper scripts to install and configure the application.
A company is using continuous integration/continuous delivery (CI/CD) systems. A developer must automate the deployment of an application software package to Amazon EC2 instances and virtual servers that run on premises. Which AWS service should the developer use to meet these requirements?
A. AWS Cloud9
B. AWS CodeBuild
C. AWS Elastic Beanstalk
D. AWS CodeDeploy
A company created a serverless application that includes users' favorite actors. The company modeled its data in an Amazon DynamoDB table The categories of the table are Actor, Movie, and Year.
Each actor appears in several movies and can appear in multiple movies in a single year. The company wants to see which of the users' favorite actors were in the same movie and which movies were in the same year. A developer needs to
design the DynamoDB table to minimize response time for those queries.
Which solution meets these requirements?
A. Create a composite primary key with Actor as the partition key and Movie as the sort key Use Year as the sort key for a global secondary index (GSI).
B. Create a composite primary key with Actor as the partition key and Year as the sort key Use Movie as the sort key for a global secondary index (GSI).
C. Create a composite primary key with Movie as the partition key and Actor as the sort key Use Year as the sort key for a global secondary index (GSI).
D. Create a simple primary key with Actor as the partition key. Use Year as the sort key for a local secondary index (LSI).
A company has deployed web servers on Amazon EC2 instances with Amazon Linux in the us-east-1 Region. The EC2 instances are backed by Amazon Elastic Block Store (Amazon EBS). A developer wants to ensure that all of these instances will provide encryption at rest by using an AWS Key Management Service (AWS KMS) key.
How can the developer enable encryption at rest on existing and new instances by using an AWS KMS key?
A. Use AWS Certificate Manager (ACM) to generate a TLS certificate. Store the private key in AWS KMS. Use AWS KMS on the instances to enable TLS encryption.
B. Manually enable EBS encryption with AWS KMS on running instances. Then enable EBS encryption by default for new instances.
C. Enable EBS encryption by default. Create snapshots from the running instances. Replace running instances with new instances from snapshots.
D. Export the AWS KMS key to the application. Encrypt all application data by using the exported key. Enable EBS encryption by default to encrypt all other data.
A developer wants to run a PHP website with an NGINX proxy and package them as Docker containers in one environment. The developer wants a managed environment with automated provisioning and load balancing. The developer cannot change the configuration and must minimize operational overhead.
How should the developer build the website to meet these requirements?
A. Create a new application in AWS Elastic Beanstalk that is preconfigured for a multicontainer Docker environment. Upload the code, and deploy it to a web server environment.
B. Deploy the code on Amazon EC2 instances in an Auto Scaling group behind an Application Load Balancer.
C. Construct an AWS Cloud Formation template that launches Amazon EC2 instances. Install and configure the PHP code by using cfn helper scripts.
D. Upload the code for the PHP website into an Amazon S3 bucket. Host the website from the S3 bucket.
A developer has three microservice projects that are separated into different folders under the same AWS CodeCommit repository. Each project has a separate AWS CodePipeline pipeline. The developer notices that when changes are
pushed to one microservice, all three pipelines begin to run.
The developer needs to ensure that only relevant pipelines run. The developer cannot make any changes to how the repository is organized.
Which solution will meet these requirements?
A. For each of the three microservice projects, create a separate CodeCommit repository.
B. Create an Amazon EventBridge (Amazon CloudWatch Events) rule that invokes an AWS Lambda function to evaluate changes to the repository and run the appropriate pipeline.
C. Create an Amazon API Gateway API that is backed by an AWS Lambda function to determine the appropriate pipeline to run. Add the API endpoint to a webhook in CodeCommit.
D. Migrate all three pipelines to a single pipeline. Add conditional stages to build a certain microservice project.
A developer is using Amazon S3 as the event source that invokes a Lambda function when new objects are created in the bucket. The event source mapping information is stored in the bucket notification configuration. The developer is working with different versions of the Lambda function, and has a constant need to update notification configuration so that Amazon S3 invokes the correct version.
What is the MOST efficient and effective way to achieve mapping between the S3 event and Lambda?
A. Use a different Lambda trigger.
B. Use Lambda environment variables.
C. Use a Lambda alias.
D. Use Lambda tags.
A developer has written an application hosted on Amazon EC2 instances. The application generates and uploads thousands of new objects to an Amazon S3 bucket located in the same AWS Region. The size of each object is less than 1 MB. The application is taking too long to run.
How can the performance of the application be improved?
A. Use the S3 Multipart Upload API.
B. Use S3 Transfer Acceleration.
C. Upload the objects in parallel to Amazon S3.
D. Add a random prefix to the object Keys.
An international ecommerce company's website encourages customers to leave reviews of products that they have purchased. Products are seasonal. The products are popular for a short period of time and then are not popular in the next season.
Customers leave the reviews in their native language. A developer is using Amazon Translate to implement a new feature to translate the reviews into other languages for customers who speak different languages. The website has hundreds of thousands of products with millions of reviews and is growing. Most reviews will be viewed in only two or three languages.
What is the MOST cost-effective way to implement this new feature?
A. Update the application code that writes the review to the database to translate the review into all supported languages. Persist a copy of each translation in the database for future visitors.
B. Update the application code that reads the review from the database to check an Amazon ElastiCache cluster for translated reviews. If a visitor is requesting a review and language combination that is not in the cache, configure the application to translate it and store it in the cache with a TTL of 1 month.
C. Update the application code that reads the review from the database to translate the review in real time and return the translated version without persisting it.
D. Set up a database change stream to write events to a stream each time a customer writes a review. Configure an AWS Lambda function to read the events from the stream, translate the review into all supported languages, and update the review database to include all translations for future visitors.
A developer is troubleshooting a three-tier application, which is deployed on Amazon EC2 instances. There is a connectivity problem between the application servers and the database servers. Which AWS services or tools should be used to identify the faulty component? (Choose two.)
A. AWS CloudTrail
B. AWS Trusted Advisor
C. Amazon VPC Flow Logs
D. Network access control lists
E. AWS Config rules
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