Quiz IT certification exam

Question 1

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 has set 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?

Accepted Answer

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.

Answer

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

Answer

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.

Answer

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

Question 2

A developer has an application that stores data in an Amazon S3 bucket. The application uses an HTTP API to store and retrieve objects. When the PutObject API operation adds objects to the S3 bucket the developer must encrypt these objects at rest by using server-side encryption with Amazon S3 managed keys (SSE-S3).Which solution will meet this requirement?

Accepted Answer

Set the x-amz-server-side-encryption header when invoking the PutObject API operation.

Answer

Create an AWS Key Management Service (AWS KMS) key. Assign the KMS key to the S3 bucket.

Answer

Provide the encryption key in the HTTP header of every request.

Answer

Apply TLS to encrypt the traffic to the S3 bucket.

Question 3

A developer needs to perform geographic load testing of an API. The developer must deploy resources to multiple AWS Regions to support the load testing of the API.How can the developer meet these requirements without additional application code?

Accepted Answer

Create an AWS CloudFormation template that defines the load test resources. Use the AWS CLI create-stack-set command to create a stack set in the desired Regions.

Answer

Create and deploy an AWS Lambda function in each desired Region. Configure the Lambda function to create a stack from an AWS CloudFormation template in that Region when the function is invoked.

Answer

Create an AWS Systems Manager document that defines the resources. Use the document to create the resources in the desired Regions.

Answer

Create an AWS CloudFormation template that defines the load test resources. Use the AWS CLI deploy command to create a stack from the template in each Region.

Question 4

A developer is creating an application that includes an Amazon API Gateway REST API in the us-east-2 Region. The developer wants to use Amazon CloudFront and a custom domain name for the API.The developer has acquired an SSL/TLS certificate for the domain from a third-party provider.How should the developer configure the custom domain for the application?

Accepted Answer

Import the SSL/TLS certificate into AWS Certificate Manager (ACM) in the us-east-1 Region. Create a DNS CNAME record for the custom domain.

Answer

Import the SSL/TLS certificate into AWS Certificate Manager (ACM) in the same Region as the API. Create a DNS A record for the custom domain.

Answer

Import the SSL/TLS certificate into CloudFront. Create a DNS CNAME record for the custom domain.

Answer

Import the SSL/TLS certificate into AWS Certificate Manager (ACM) in the same Region as the API. Create a DNS CNAME record for the custom domain.

Question 5

A developer is creating a template that uses AWS CloudFormation to deploy an application. The application is serverless and uses Amazon API Gateway, Amazon DynamoDB, and AWS Lambda.Which AWS service or tool should the developer use to define serverless resources in YAML?

Accepted Answer

AWS Serverless Application Model (AWS SAM)

Answer

CloudFormation serverless intrinsic functions

Answer

AWS Elastic Beanstalk

Answer

AWS Cloud Development Kit (AWS CDK)

Question 6

A developer wants to insert a record into an Amazon DynamoDB table as soon as a new file is added to an Amazon S3 bucket.Which set of steps would be necessary to achieve this?

Accepted Answer

Configure an S3 event to invoke an AWS Lambda function that inserts records into DynamoDB.

Answer

Create an event with Amazon EventBridge that will monitor the S3 bucket and then insert the records into DynamoDB.

Answer

Create an AWS Lambda function that will poll the S3 bucket and then insert the records into DynamoDB.

Answer

Create a cron job that will run at a scheduled time and insert the records into DynamoDB.

Question 7

A development team maintains a web application by using a single AWS CloudFormation template.The template defines web servers and an Amazon RDS database. The team uses the Cloud Formation template to deploy the Cloud Formation stack to different environments.During a recent application deployment, a developer caused the primary development database to be dropped and recreated. The result of this incident was a loss of dat a. The team needs to avoid accidental database deletion in the future.Which solutions will meet these requirements? (Choose two.)

Accepted Answer

Add a CloudFormation Deletion Policy attribute with the Retain value to the database resource.

Accepted Answer

Update the CloudFormation stack policy to prevent updates to the database.

Answer

Modify the database to use a Multi-AZ deployment.

Answer

Create a CloudFormation stack set for the web application and database deployments.

Answer

Add a Cloud Formation DeletionPolicy attribute with the Retain value to the stack.

Question 8

A company is implementing an application on Amazon EC2 instances. The application needs to process incoming transactions. When the application detects a transaction that is not valid, the application must send a chat message to the company's support team. To send the message, the application needs to retrieve the access token to authenticate by using the chat API.A developer needs to implement a solution to store the access token. The access token must be encrypted at rest and in transit. The access token must also be accessible from other AWS accounts.Which solution will meet these requirements with the LEAST management overhead?

Accepted Answer

Use AWS Secrets Manager with an AWS Key Management Service (AWS KMS) customer managed key to store the access token. Add a resource-based policy to the secret to allow access from other accounts. Update the IAM role of the EC2 instances with permissions to access Secrets Manager.Retrieve the token from Secrets Manager. Use the decrypted access token to send the message to the chat.

Answer

Use an AWS Systems Manager Parameter Store SecureString parameter that uses an AWS Key Management Service (AWS KMS) AWS managed key to store the access token. Add a resource-based policy to the parameter to allow access from other accounts. Update the IAM role of the EC2 instances with permissions to access Parameter Store. Retrieve the token from Parameter Store with the decrypt flag enabled. Use the decrypted access token to send the message to the chat.

Answer

Encrypt the access token by using an AWS Key Management Service (AWS KMS) customer managed key. Store the access token in an Amazon DynamoDB table. Update the IAM role of the EC2 instances with permissions to access DynamoDB and AWS KMS. Retrieve the token from DynamoDB.Decrypt the token by using AWS KMS on the EC2 instances. Use the decrypted access token to send the message to the chat.

Answer

Encrypt the access token by using an AWS Key Management Service (AWS KMS) AWS managed key. Store the access token in an Amazon S3 bucket. Add a bucket policy to the S3 bucket to allow access from other accounts. Update the IAM role of the EC2 instances with permissions to access Amazon S3 and AWS KMS. Retrieve the token from the S3 bucket. Decrypt the token by using AWS KMS on the EC2 instances. Use the decrypted access token to send the massage to the chat.

Question 9

A company is running Amazon EC2 instances in multiple AWS accounts. A developer needs to implement an application that collects all the lifecycle events of the EC2 instances. The application needs to store the lifecycle events in a single Amazon Simple Queue Service (Amazon SQS) queue in the company's main AWS account for further processing.Which solution will meet these requirements?

Accepted Answer

Configure the permissions on the main account event bus to receive events from all accounts. Create an Amazon EventBridge rule in each account to send all the EC2 instance lifecycle events to the main account event bus. Add an EventBridge rule to the main account event bus that matches all EC2 instance lifecycle events. Set the SQS queue as a target for the rule.

Answer

Configure Amazon EC2 to deliver the EC2 instance lifecycle events from all accounts to the Amazon EventBridge event bus of the main account. Add an EventBridge rule to the event bus of the main account that matches all EC2 instance lifecycle events. Add the SQS queue as a target of the rule.

Answer

Use the resource policies of the SQS queue in the main account to give each account permissions to write to that SQS queue. Add to the Amazon EventBridge event bus of each account an EventBridge rule that matches all EC2 instance lifecycle events. Add the SQS queue in the main account as a target of the rule.

Answer

Write an AWS Lambda function that scans through all EC2 instances in the company accounts to detect EC2 instance lifecycle changes. Configure the Lambda function to write a notification message to the SQS queue in the main account if the function detects an EC2 instance lifecycle change. Add an Amazon EventBridge scheduled rule that invokes the Lambda function every minute.

Question 10

An application is using Amazon Cognito user pools and identity pools for secure access. A developer wants to integrate the user-specific file upload and download features in the application with Amazon S3. The developer must ensure that the files are saved and retrieved in a secure manner and that users can access only their own files. The file sizes range from 3 KB to 300 MB.Which option will meet these requirements with the HIGHEST level of security?

Accepted Answer

Use an IAM policy within the Amazon Cognito identity prefix to restrict users to use their own folders in Amazon S3.

Answer

Use S3 Event Notifications to validate the file upload and download requests and update the user interface (UI).

Answer

Save the details of the uploaded files in a separate Amazon DynamoDB table. Filter the list of files in the user interface (UI) by comparing the current user ID with the user ID associated with the file in the table.

Answer

Use Amazon API Gateway and an AWS Lambda function to upload and download files. Validate each request in the Lambda function before performing the requested operation.

Question 11

A company is building a scalable data management solution by using AWS services to improve the speed and agility of development. The solution will ingest large volumes of data from various sources and will process this data through multiple business rules and transformations.The solution requires business rules to run in sequence and to handle reprocessing of data if errors occur when the business rules run. The company needs the solution to be scalable and to require the least possible maintenance.Which AWS service should the company use to manage and automate the orchestration of the data flows to meet these requirements?

Accepted Answer

AWS Step Functions

Answer

AWS Batch

Answer

AWS Glue

Answer

AWS Lambda

Question 12

A developer has created an AWS Lambda function that is written in Python. The Lambda function reads data from objects in Amazon S3 and writes data to an Amazon DynamoDB table. The function is successfully invoked from an S3 event notification when an object is created. However, the function fails when it attempts to write to the DynamoDB table.What is the MOST likely cause of this issue?

Accepted Answer

The Lambda function does not have IAM permissions to write to DynamoDB.

Answer

The Lambda function's concurrency limit has been exceeded.

Answer

DynamoDB table requires a global secondary index (GSI) to support writes.

Answer

The DynamoDB table is not running in the same Availability Zone as the Lambda function.

Question 13

Users are reporting errors in an application. The application consists of several micro services that are deployed on Amazon Elastic Container Serves (Amazon ECS) with AWS Fargate.When combination of steps should a developer take to fix the errors? (Select TWO)

Accepted Answer

Deploy AWS X-Ray as a sidecar container to the micro services. Update the task role policy to allow access to me X -Ray API.

Accepted Answer

Instrument the ECS task to send the stout and spider- output to Amazon CloudWatch Logs. Update the task role policy to allow the cloudwatch Putlogs action.

Answer

Deploy AWS X-Ray as a daemon set to the Fargate cluster. Update the service role policy to allow access to the X-Ray API.

Answer

Instrument the application by using the AWS X-Ray SDK. Update the application to use the Put-XrayTrace API call to communicate with the X-Ray API.

Answer

Instrument the application by using the AWS X-Ray SDK. Update the application to communicate with the X-Ray daemon.

Question 14

A developer at a company needs to create a small application mat makes the same API call once each flay at a designated time. The company does not have infrastructure in the AWS Cloud yet, but the company wants to implement this functionality on AWS.Which solution meets these requirements in the MOST operationally efficient manner?

Accepted Answer

Use an AWS Lambda function that is invoked by an Amazon EventBridge scheduled event.

Answer

Use a Kubermetes cron job that runs on Amazon Elastic Kubemetes Sen/ice (Amazon EKS)

Answer

Use an Amazon Linux crontab scheduled job that runs on Amazon EC2

Answer

Use an AWS Batch job that is submitted to an AWS Batch job queue.

Question 15

A developer is building a serverless application that is based on AWS Lambd a. The developer initializes the AWS software development kit (SDK) outside of the Lambda handcar function.What is the PRIMARY benefit of this action?

Accepted Answer

Takes advantage of runtime environment reuse

Answer

Improves legibility and systolic convention

Answer

Provides better error handling

Answer

Creates a new SDK instance for each invocation

Question 16

A company is using Amazon RDS as the Backend database for its application. After a recent marketing campaign, a surge of read requests to the database increased the latency of data retrieval from the database.The company has decided to implement a caching layer in front of the database. The cached content must be encrypted and must be highly available.Which solution will meet these requirements?

Accepted Answer

Amazon ElastiCache for Redis in cluster mode

Answer

Amazon Cloudfront

Answer

Amazon ElastiCache to Memcached

Answer

Amazon DynamoDB Accelerate (DAX)

Question 17

A developer at a company recently created a serverless application to process and show data from business reports. The application's user interface (UI) allows users to select and start processing the files. The Ul displays a message when the result is available to view. The application uses AWS Step Functions with AWS Lambda functions to process the files. The developer used Amazon API Gateway and Lambda functions to create an API to support the UI.The company's Ul team reports that the request to process a file is often returning timeout errors because of the see or complexity of the files. The Ul team wants the API to provide an immediate response so that the Ul can deploy a message while the files are being processed. The backend process that is invoked by the API needs to send an email message when the report processing is complete.What should the developer do to configure the API to meet these requirements?

Accepted Answer

Change the API Gateway route to add an X-Amz-Invocation-Type header win a sialic value of 'Event' in the integration request Deploy the API Gateway stage to apply the changes.

Answer

Change the configuration of the Lambda function that implements the request to process a file.Configure the maximum age of the event so that the Lambda function will ion asynchronously.

Answer

Change the API Gateway timeout value to match the Lambda function ominous value. Deploy the API Gateway stage to apply the changes.

Answer

Change the API Gateway route to add an X-Amz-Target header with a static value of 'A sync' in the integration request Deploy me API Gateway stage to apply the changes.

Question 18

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 to reach function.How can the developer keep the dependencies of the Lambda functions up to date with the LEAST additional complexity?

Accepted Answer

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

Answer

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

Answer

Upgrade the Lambda functions to the most recent runtime version.

Answer

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

Question 19

A mobile app stores blog posts in an Amazon DynacnoDB table Millions of posts are added every day and each post represents a single item in the table. The mobile app requires only recent posts. Any post that is older than 48 hours can be removed.What is the MOST cost-effective way to delete posts that are older man 48 hours?

Accepted Answer

For each item add a new attribute of type. Number that has timestamp that is set to 48 hours after the blog post. creation time Configure the DynamoDB table with a TTL that references the new attribute.

Answer

For each item add a new attribute of type String that has a timestamp that is set to the blog post creation time. Create a script to find old posts with a table scan and remove posts that are order than 48 hours by using the Balch Write ltem API operation. Schedule a cron job on an Amazon EC2 instance once an hour to start the script.

Answer

For each item add a new attribute of type. String that has a timestamp that its set to the blog post creation time. Create a script to find old posts with a table scan and remove posts that are Oder than 48 hours by using the Batch Write item API operating. Place the script in a container image. Schedule an Amazon Elastic Container Service (Amazon ECS) task on AWS Far gate that invokes the container every 5 minutes.

Answer

For each item, add a new attribute of type Date that has a timestamp that is set to 48 hours after the blog post creation time. Create a global secondary index (GSI) that uses the new attribute as a sort key. Create an AWS Lambda function that references the GSI and removes expired items by using the Batch Write item API operation Schedule me function with an Amazon CloudWatch event every minute.

Question 20

A developer is modifying an existing AWS Lambda function White checking the code the developer notices hardcoded parameter various for an Amazon RDS for SQL Server user name password database host and port. There also are hardcoded parameter values for an Amazon DynamoOB table.an Amazon S3 bucket, and an Amazon Simple Notification Service (Amazon SNS) topic.The developer wants to securely store the parameter values outside the code m an encrypted format and wants to turn on rotation for the credentials. The developer also wants to be able to reuse the parameter values from other applications and to update the parameter values without modifying code.Which solution will meet these requirements with the LEAST operational overhead?

Accepted Answer

Create an RDS database secret in AWS Secrets Manager. Set the user name password, database, host and port. Turn on secret rotation. Create Secure String parameters in AWS Systems Manager Parameter Store for the DynamoDB table, S3 bucket and SNS topic.

Answer

Create an RDS database secret in AWS Secrets Manager. Set the user name password, database, host and port. Turn on secret rotation. Create encrypted Lambda environment variables for the DynamoDB table, S3 bucket and SNS topic.

Answer

Create RDS database parameters in AWS Systems Manager Parameter. Store for the user name password, database, host and port. Create encrypted Lambda environment variables for me DynamoDB table, S3 bucket, and SNS topic. Create a Lambda function and set the logic for the credentials rotation task Schedule the credentials rotation task in Amazon EventBridge.

Answer

Create RDS database parameters in AWS Systems Manager Parameter. Store for the user name password database, host, and port. Store the DynamoDB table. S3 bucket, and SNS topic in Amazon S3 Create a Lambda function and set the logic for the credentials rotation Invoke the Lambda function on a schedule.

Question 21

A developer is creating an AWS CloudFormation template to deploy Amazon EC2 instances across multiple AWS accounts. The developer must choose the EC2 instances from a list of approved instance types.How can the developer incorporate the list of approved instance types in the CloudFormation template?

Accepted Answer

In the CloudFormation template, create a parameter with the list of EC2 instance types as AllowedValues.

Answer

Create a separate CloudFormation template for each EC2 instance type in the list.

Answer

In the Resources section of the CloudFormation template, create resources for each EC2 instance type in the list.

Answer

In the CloudFormation template, create a separate parameter for each EC2 instance type in the list.

Question 22

A developer has an application that makes batch requests directly to Amazon DynamoDB by using the BatchGetItem low-level API operation. The responses frequently return values in the UnprocessedKeys element.Which actions should the developer take to increase the resiliency of the application when the batch response includes values in UnprocessedKeys? (Choose two.)

Accepted Answer

Retry the batch operation with exponential backoff and randomized delay.

Accepted Answer

Update the application to use an AWS software development kit (AWS SDK) to make the requests.

Answer

Retry the batch operation immediately.

Answer

Increase the provisioned read capacity of the DynamoDB tables that the operation accesses.

Answer

Increase the provisioned write capacity of the DynamoDB tables that the operation accesses.

Question 23

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?

Accepted Answer

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

Answer

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

Answer

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.

Answer

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.

Question 24

A company wants to share information with a third party. The third party has an HTTP API endpoint that the company can use to share the information. The company has the required API key to access the HTTP API.The company needs a way to manage the API key by using code. The integration of the API key with the application code cannot affect application performance.Which solution will meet these requirements MOST securely?

Accepted Answer

Store the API credentials in AWS Secrets Manager. Retrieve the API credentials at runtime by using the AWS SDK. Use the credentials to make the API call.

Answer

Store the API credentials in a local code variable. Push the code to a secure Git repository. Use the local code variable at runtime to make the API call.

Answer

Store the API credentials as an object in a private Amazon S3 bucket. Restrict access to the S3 object by using IAM policies. Retrieve the API credentials at runtime by using the AWS SDK. Use the credentials to make the API call.

Answer

Store the API credentials in an Amazon DynamoDB table. Restrict access to the table by using resource-based policies. Retrieve the API credentials at runtime by using the AWS SDK. Use the credentials to make the API call.

Question 25

A developer is deploying a new application to Amazon Elastic Container Service (Amazon ECS). The developer needs to securely store and retrieve different types of variables. These variables include authentication information for a remote API, the URL for the API, and credentials. The authentication information and API URL must be available to all current and future deployed versions of the application across development, testing, and production environments.How should the developer retrieve the variables with the FEWEST application changes?

Accepted Answer

Update the application to retrieve the variables from AWS Systems Manager Parameter Store. Use unique paths in Parameter Store for each variable in each environment. Store the credentials in AWS Secrets Manager in each environment.

Answer

Update the application to retrieve the variables from AWS Key Management Service (AWS KMS).Store the API URL and credentials as unique keys for each environment.

Answer

Update the application to retrieve the variables from an encrypted file that is stored with the application. Store the API URL and credentials in unique files for each environment.

Answer

Update the application to retrieve the variables from each of the deployed environments. Define the authentication information and API URL in the ECS task definition as unique names during the deployment process.

Question 26

A company is migrating legacy internal applications to AWS. Leadership wants to rewrite the internal employee directory to use native AWS services. A developer needs to create a solution for storing employee contact details and high-resolution photos for use with the new application.Which solution will enable the search and retrieval of each employee's individual details and highresolution photos using AWS APIs?

Accepted Answer

Store each employee's contact information in an Amazon DynamoDB table along with the object keys for the photos stored in Amazon S3.

Answer

Encode each employee's contact information and photos using Base64. Store the information in an Amazon DynamoDB table using a sort key.

Answer

Use Amazon Cognito user pools to implement the employee directory in a fully managed software-as-a-service (SaaS) method.

Answer

Store employee contact information in an Amazon RDS DB instance with the photos stored in Amazon Elastic File System (Amazon EFS).

Question 27

A developer is creating an application that will give users the ability to store photos from their cellphones in the cloud. The application needs to support tens of thousands of users. The application uses an Amazon API Gateway REST API that is integrated with AWS Lambda functions to process the photos. The application stores details about the photos in Amazon DynamoDB.Users need to create an account to access the application. In the application, users must be able to upload photos and retrieve previously uploaded photos. The photos will range in size from 300 KB to 5 MB.Which solution will meet these requirements with the LEAST operational overhead?

Accepted Answer

Use Amazon Cognito user pools to manage user accounts. Create an Amazon Cognito user pool authorizer in API Gateway to control access to the API. Use the Lambda function to store the photos in Amazon S3. Store the object's S3 key as part of the photo details in the DynamoDB table. Retrieve previously uploaded photos by querying DynamoDB for the S3 key.

Answer

Use Amazon Cognito user pools to manage user accounts. Create an Amazon Cognito user pool authorizer in API Gateway to control access to the API. Use the Lambda function to store the photos and details in the DynamoDB table. Retrieve previously uploaded photos directly from the DynamoDB table.

Answer

Create an IAM user for each user of the application during the sign-up process. Use IAM authentication to access the API Gateway API. Use the Lambda function to store the photos in Amazon S3. Store the object's S3 key as part of the photo details in the DynamoDB table. Retrieve previously uploaded photos by querying DynamoDB for the S3 key.

Answer

Create a users table in DynamoDB. Use the table to manage user accounts. Create a Lambda authorizer that validates user credentials against the users table. Integrate the Lambda authorizer with API Gateway to control access to the API. Use the Lambda function to store the photos in Amazon S3. Store the object's S3 key as par of the photo details in the DynamoDB table. Retrieve previously uploaded photos by querying DynamoDB for the S3 key.

Question 28

A company receives food orders from multiple partners. The company has a microservices application that uses Amazon API Gateway APIs with AWS Lambda integration. Each partner sends orders by calling a customized API that is exposed through API Gateway. The API call invokes a shared Lambda function to process the orders.Partners need to be notified after the Lambda function processes the orders. Each partner must receive updates for only the partner's own orders. The company wants to add new partners in the future with the fewest code changes possible.Which solution will meet these requirements in the MOST scalable way?

Accepted Answer

Create an Amazon Simple Notification Service (Amazon SNS) topic. Configure the Lambda function to publish messages with specific attributes to the SNS topic. Subscribe each partner to the SNS topic. Apply the appropriate filter policy to the topic subscriptions.

Answer

Create a different Amazon Simple Notification Service (Amazon SNS) topic for each partner.Configure the Lambda function to publish messages for each partner to the partner's SNS topic.

Answer

Create a different Lambda function for each partner. Configure the Lambda function to notify each partner's service endpoint directly.

Answer

Create one Amazon Simple Notification Service (Amazon SNS) topic. Subscribe all partners to the SNS topic.

Question 29

A financial company must store original customer records for 10 years for legal reasons. A complete record contains personally identifiable information (PII). According to local regulations, PII is available to only certain people in the company and must not be shared with third parties. The company needs to make the records available to third-party organizations for statistical analysis without sharing the PII.A developer wants to store the original immutable record in Amazon S3. Depending on who accesses the S3 document, the document should be returned as is or with all the PII removed. The developer has written an AWS Lambda function to remove the PII from the document. The function is named removePii.What should the developer do so that the company can meet the PII requirements while maintaining only one copy of the document?

Accepted Answer

Create an S3 Object Lambda access point from the S3 console. Select the removePii function. Use S3 Access Points to access the object without PII.

Answer

Set up an S3 event notification that invokes the removePii function when an S3 GET request is made. Call Amazon S3 by using a GET request to access the object without PII.

Answer

Set up an S3 event notification that invokes the removePii function when an S3 PUT request is made. Call Amazon S3 by using a PUT request to access the object without PII.

Answer

Create an S3 access point from the S3 console. Use the access point name to call the GetObjectLegalHold S3 API function. Pass in the removePii function name to access the object without PII.

Question 30

A developer is deploying an AWS Lambda function The developer wants the ability to return to older versions of the function quickly and seamlessly.How can the developer achieve this goal with the LEAST operational overhead?

Accepted Answer

Use a function alias with different versions.

Answer

Use AWS OpsWorks to perform blue/green deployments.

Answer

Maintain deployment packages for older versions in Amazon S3.

Answer

Use AWS CodePipeline for deployments and rollbacks.

Question 31

A developer has written an AWS Lambda function. The function is CPU-bound. The developer wants to ensure that the function returns responses quickly.How can the developer improve the function's performance?

Accepted Answer

Increase the function's memory.

Answer

Increase the function's CPU core count.

Answer

Increase the function's reserved concurrency.

Answer

Increase the function's timeout.

Question 32

For a deployment using AWS Code Deploy, what is the run order of the hooks for in-place deployments?

Accepted Answer

ApplicationStop -> BeforeInstall -> AfterInstall -> ApplicationStart

Answer

BeforeInstall -> ApplicationStop -> ApplicationStart -> AfterInstall

Answer

BeforeInstall -> ApplicationStop -> ValidateService -> ApplicationStart

Answer

ApplicationStop -> BeforeInstall -> ValidateService -> ApplicationStart

Question 33

A company is building a serverless application on AWS. The application uses an AWS Lambda function to process customer orders 24 hours a day, 7 days a week. The Lambda function calls an external vendor's HTTP API to process payments.During load tests, a developer discovers that the external vendor payment processing API occasionally times out and returns errors. The company expects that some payment processing API calls will return errors.The company wants the support team to receive notifications in near real time only when the payment processing external API error rate exceed 5% of the total number of transactions in an hour. Developers need to use an existing Amazon Simple Notification Service (Amazon SNS) topic that is configured to notify the support team.Which solution will meet these requirements?

Accepted Answer

Publish custom metrics to CloudWatch that record the failures of the external payment processing API calls. Configure a CloudWatch alarm to notify the existing SNS topic when error rate exceeds the specified rate.

Answer

Write the results of payment processing API calls to Amazon CloudWatch. Use Amazon CloudWatch Logs Insights to query the CloudWatch logs. Schedule the Lambda function to check the CloudWatch logs and notify the existing SNS topic.

Answer

Publish the results of the external payment processing API calls to a new Amazon SNS topic. Subscribe the support team members to the new SNS topic.

Answer

Write the results of the external payment processing API calls to Amazon S3. Schedule an AmazonAthena query to run at regular intervals. Configure Athena to send notifications to the existing SNS topic when the error rate exceeds the specified rate.

Question 34

A company is offering APIs as a service over the internet to provide unauthenticated read access to statistical information that is updated daily. The company uses Amazon API Gateway and AWS Lambda to develop the APIs. The service has become popular, and the company wants to enhance the responsiveness of the APIs.Which action can help the company achieve this goal?

Accepted Answer

Enable API caching in API Gateway.

Answer

Configure API Gateway to use an interface VPC endpoint.

Answer

Enable cross-origin resource sharing (CORS) for the APIs.

Answer

Configure usage plans and API keys in API Gateway.

Question 35

A developer wants to store information about movies. Each movie has a title, release year, and genre. The movie information also can include additional properties about the cast and production crew. This additional information is inconsistent across movies. For example, one movie might have an assistant director, and another movie might have an animal trainer.The developer needs to implement a solution to support the following use cases:For a given title and release year, get all details about the movie that has that title and release year.For a given title, get all details about all movies that have that title.For a given genre, get all details about all movies in that genre.Which data store configuration will meet these requirements?

Accepted Answer

Create an Amazon DynamoDB table. Configure the table with a primary key that consists of the title as the partition key and the release year as the sort key. Create a global secondary index that uses the genre as the partition key and the title as the sort key.

Answer

Create an Amazon DynamoDB table. Configure the table with a primary key that consists of the genre as the partition key and the release year as the sort key. Create a global secondary index that uses the title as the partition key.

Answer

On an Amazon RDS DB instance, create a table that contains columns for title, release year, and genre. Configure the title as the primary key.

Answer

On an Amazon RDS DB instance, create a table where the primary key is the title and all other data is encoded into JSON format as one additional column.

Question 36

A developer maintains an Amazon API Gateway REST API. Customers use the API through a frontend UI and Amazon Cognito authentication.The developer has a new version of the API that contains new endpoints and backward-incompatible interface changes. The developer needs to provide beta access to other developers on the team without affecting customers.Which solution will meet these requirements with the LEAST operational overhead?

Accepted Answer

Define a development stage on the API Gateway API. Instruct the other developers to point the endpoints to the development stage.

Answer

Define a new API Gateway API that points to the new API application code. Instruct the other developers to point the endpoints to the new API.

Answer

Implement a query parameter in the API application code that determines which code version to call.

Answer

Specify new API Gateway endpoints for the API endpoints that the developer wants to add.

Question 37

A developer is creating an application that will store personal health information (PHI). The PHI needs to be encrypted at all times. An encrypted Amazon RDS for MySQL DB instance is storing the dat a. The developer wants to increase the performance of the application by caching frequently accessed data while adding the ability to sort or rank the cached datasets.Which solution will meet these requirements?

Accepted Answer

Create an Amazon ElastiCache for Redis instance. Enable encryption of data in transit and at rest. Store frequently accessed data in the cache.

Answer

Create an Amazon ElastiCache for Memcached instance. Enable encryption of data in transit and at rest. Store frequently accessed data in the cache.

Answer

Create an Amazon RDS for MySQL read replica. Connect to the read replica by using SSL. Configure the read replica to store frequently accessed data.

Answer

Create an Amazon DynamoDB table and a DynamoDB Accelerator (DAX) cluster for the table. Store frequently accessed data in the DynamoDB table.

Question 38

A company has a multi-node Windows legacy application that runs on premises. The application uses a network shared folder as a centralized configuration repository to store configuration files in .xml format. The company is migrating the application to Amazon EC2 instances. As part of the migration to AWS, a developer must identify a solution that provides high availability for the repository.Which solution will meet this requirement MOST cost-effectively?

Accepted Answer

Create an Amazon S3 bucket to host the repository. Migrate the existing .xml files to the S3 bucket. Update the application code to use the AWS SDK to read and write configuration files from Amazon S3.

Answer

Mount an Amazon Elastic Block Store (Amazon EBS) volume onto one of the EC2 instances. Deploy a file system on the EBS volume. Use the host operating system to share a folder. Update the application code to read and write configuration files from the shared folder.

Answer

Deploy a micro EC2 instance with an instance store volume. Use the host operating system to share a folder. Update the application code to read and write configuration files from the shared folder.

Answer

Create an Amazon S3 bucket to host the repository. Migrate the existing .xml files to the S3 bucket. Mount the S3 bucket to the EC2 instances as a local volume. Update the application code to read and write configuration files from the disk.

Question 39

A company wants to deploy and maintain static websites on AWS. Each website's source code is hosted in one of several version control systems, including AWS CodeCommit, Bitbucket, and GitHub.The company wants to implement phased releases by using development, staging, user acceptance testing, and production environments in the AWS Cloud. Deployments to each environment must be started by code merges on the relevant Git branch. The company wants to use HTTPS for all data exchange. The company needs a solution that does not require servers to run continuously.Which solution will meet these requirements with the LEAST operational overhead?

Accepted Answer

Host each website by using AWS Amplify with a serverless backend. Conned the repository branches that correspond to each of the desired environments. Start deployments by merging code changes to a desired branch.

Answer

Host each website in AWS Elastic Beanstalk with multiple environments. Use the EB CLI to link each repository branch. Integrate AWS CodePipeline to automate deployments from version control code merges.

Answer

Host each website in different Amazon S3 buckets for each environment. Configure AWS CodePipeline to pull source code from version control. Add an AWS CodeBuild stage to copy source code to Amazon S3.

Answer

Host each website on its own Amazon EC2 instance. Write a custom deployment script to bundle each website's static assets. Copy the assets to Amazon EC2. Set up a workflow to run the script when code is merged.

Question 40

A company is migrating an on-premises database to Amazon RDS for MySQL. The company has readheavy 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?

Accepted Answer

Deploy Amazon RDS with one or more read replicas. Modify the application code so that queries use the URL for the read replicas.

Answer

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.

Answer

Use a multi-AZ Amazon RDS deployment. Modify the code so that queries access the secondary RDS instance.

Answer

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.

Amazon DVA-C02 Practice Test 1

Amazon DVA-C02 Practice Tests

Amazon DVA-C02 Practice Test 1

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Amazon DVA-C02 Practice Tests

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