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Amazon Web Services SAP-C02 - AWS Certified Solutions Architect - Professional

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Total 683 questions

A company has an application that uses an Amazon Aurora PostgreSQL DB cluster for the application ' s database. The DB cluster contains one small primary instance and three larger replica instances. The application runs on an AWS Lambda function. The application makes many short-lived connections to the database ' s replica instances to perform read-only operations.

During periods of high traffic, the application becomes unreliable and the database reports that too many connections are being established. The frequency of high-traffic periods is unpredictable.

Which solution will improve the reliability of the application?

A.

Use Amazon RDS Proxy to create a proxy for the DB cluster. Configure a read-only endpoint for the proxy. Update the Lambda function to connect to the proxyendpoint.

B.

Increase the max_connections setting on the DB cluster ' s parameter group. Reboot all the instances in the DB cluster. Update the Lambda function to connect to the DB cluster endpoint.

C.

Configure instance scaling for the DB cluster to occur when the DatabaseConnections metric is close to the max _ connections setting. Update the Lambda function to connect to the Aurora reader endpoint.

D.

Use Amazon RDS Proxy to create a proxy for the DB cluster. Configure a read-only endpoint for the Aurora Data API on the proxy. Update the Lambda function to connect to the proxy endpoint.

A company hosts a blog post application on AWS using Amazon API Gateway, Amazon DynamoDB, and AWS Lambda. The application currently does not use

API keys to authorize requests. The API model is as follows:

GET/posts/[postid] to get post details

GET/users[userid] to get user details

GET/comments/[commentid] to get comments details

The company has noticed users are actively discussing topics in the comments section, and the company wants to increase user engagement by marking the comments appears in real time.

Which design should be used to reduce comment latency and improve user experience?

A.

Use edge-optimized API with Amazon CloudFront to cache API responses.

B.

Modify the blog application code to request GET comment[commented] every 10 seconds.

C.

Use AWS AppSync and leverage WebSockets to deliver comments.

D.

Change the concurrency limit of the Lambda functions to lower the API response time.

A company runs a web application on AWS. The web application delivers static content from an Amazon S3 bucket that is behind an Amazon CloudFront distribution. The application serves dynamic content by using an Application Load Balancer (ALB) that distributes requests to a fleet of Amazon EC2 instances in Auto Scaling groups. The application uses a domain name setup in Amazon Route 53.

Some users reported occasional issues when the users attempted to access the website during peak hours. An operations team found that the ALB sometimes returned HTTP 503 Service Unavailable errors. The company wants to display a custom error message page when these errors occur. The page should be displayed immediately for this error code.

Which solution will meet these requirements with the LEAST operational overhead?

A.

Set up a Route 53 failover routing policy. Configure a health check to determine the status of the ALB endpoint and to fail over to the failover S3 bucket endpoint.

B.

Create a second CloudFront distribution and an S3 static website to host the custom error page. Set up a Route 53 failover routing policy. Use an active-passive configuration between the two distributions.

C.

Create a CloudFront origin group that has two origins. Set the ALB endpoint as the primary origin. For the secondary origin, set an S3 bucket that is configured to host a static website Set up origin failover for the CloudFront distribution. Update the S3 static website to incorporate the custom error page.

D.

Create a CloudFront function that validates each HTTP response code that the ALB returns. Create an S3 static website in an S3 bucket. Upload the custom error page to the S3 bucket as a failover. Update the function to read the S3 bucket and to serve the error page to the end users.

A research company conducts mathematical simulations in the AWS Cloud. The simulations run on several hundred Amazon EC2 Linux instances. If a simulation encounters an issue, an engineer establishes an SSH connection to the affected EC2 instance.

Company policy requires that each EC2 instance session is established with a unique SSH key and that all SSH connections are logged in AWS CloudTrail. CloudTrail is enabled for the company’s account and the AWS Regions that the company uses.

Which solution will meet these requirements?

Question:

A company runs workloads on EC2 inmultiple VPCsin a single Region. They also have anon-premises DNS server(via Direct Connect). All EC2 instances must resolve internal.company.com usingprivate communication.

What should a solutions architect do? (Select THREE.)

Options:

A.

Create an Amazon Route 53inbound endpointin all workload VPCs.

B.

Create a Route 53outbound endpointin one VPC.

C.

Create a Route 53forwarding ruleto forward internal.company.com to the on-prem DNS.

D.

Create a Route 53 rule with theSystemtype.

E.

Associate the rule with all VPCs.

F.

Associate the rule only with the VPC that has the outbound endpoint.

A utility company collects usage data from smart meters every 5 minutes. Data is sent to API Gateway, processed by Lambda, and stored in DynamoDB. As usage increased, Lambda durations increased and DynamoDB PUTs failed with ProvisionedThroughputExceededException. Lambda also experiences TooManyRequestsException errors.

Which combination of changes will resolve these issues? (Select TWO.)

A.

Increase the write capacity units to the DynamoDB table.

B.

Increase the memory available to the Lambda functions.

C.

Increase the payload size from the smart meters.

D.

Stream the data into an Amazon Kinesis data stream from API Gateway and process the data in batches.

E.

Collect data in an Amazon SQS FIFO queue, which triggers a Lambda function to process each message.

A company in the United States (US) has acquired a company in Europe. Both companies use the AWS Cloud. The US company has built a new application with a microservices architecture. The US company is hosting the application across five VPCs in the us-east-2 Region. The application must be able to access resources in one VPC in the eu-west-1 Region. However, the application must not be able to access any other VPCs. The VPCs in both Regions have no overlapping CIDR ranges. All accounts are already consolidated in one organization in AWS Organizations. Which solution will meet these requirements MOST cost-effectively?

A.

Create one transit gateway in eu-west-1. Attach the VPCs in us-east-2 and the VPC in eu-west-1 to the transit gateway. Create the necessary route entries in each VPC so that the traffic is routed through the transit gateway.

B.

Create one transit gateway in each Region. Attach the involved subnets to the regional transit gateway. Create the necessary route entries in the associated route tables for each subnet so that the traffic is routed through the regional transit gateway. Peer the two transit gateways.

C.

Create a full mesh VPC peering connection configuration between all the VPCs. Create the necessary route entries in each VPC so that the traffic is routed through the VPC peering connection.

D.

Create one VPC peering connection for each VPC in us-east-2 to the VPC in eu-west-1. Create the necessary route entries in each VPC so that the traffic is routed through the VPC peering connection.

A company is deploying a distributed in-memory database on a fleet of Amazon EC2 instances. The fleet consists of a primary node and eight worker nodes. The primary node is responsible for monitoring cluster health, accepting user requests, distributing user requests to worker nodes, and sending an aggregate response back to a client. Worker nodes communicate with each other to replicate data partitions.

The company requires the lowest possible networking latency to achieve maximum performance.

Which solution will meet these requirements?

A.

Launch memory optimized EC2 instances in a partition placement group.

B.

Launch compute optimized EC2 instances in a partition placement group.

C.

Launch memory optimized EC2 instances in a cluster placement group

D.

Launch compute optimized EC2 instances in a spread placement group.

A company has migrated an application from on premises to AWS. The application frontend is a static website that runs on two Amazon EC2 instances behind an Application Load Balancer (ALB). The application backend is a Python application that runs on three EC2 instances behind another ALB. The EC2 instances are large, general purpose On-Demand Instances that were sized to meet the on-premises specifications for peak usage of the application.

The application averages hundreds of thousands of requests each month. However, the application is used mainly during lunchtime and receives minimal traffic during the rest of the day.

A solutions architect needs to optimize the infrastructure cost of the application without negatively affecting the application availability.

Which combination of steps will meet these requirements? (Choose two.)

A.

Change all the EC2 instances to compute optimized instances that have the same number of cores as the existing EC2 instances.

B.

Move the application frontend to a static website that is hosted on Amazon S3.

C.

Deploy the application frontend by using AWS Elastic Beanstalk. Use the same instance type for the nodes.

D.

Change all the backend EC2 instances to Spot Instances.

E.

Deploy the backend Python application to general purpose burstable EC2 instances that have the same number of cores as the existing EC2 instances.

A company uses AWS Cloud Formation to deploy its infrastructure. The company is concerned that data stored in Amazon RDS databases or Amazon EBS volumes might be deleted if a production Cloud Formation stack is deleted.

How can the company prevent users from accidentally deleting data in this way?

A.

Modify the Cloud Formation templates to add a DeletionPolicy attribute with a Retain deletion policy to RDS resources and EBS resources.

B.

Configure a stack policy that disallows the deletion of RDS resources and EBS resources.

C.

Modify 1AM policies to deny the deletion of RDS resources and EBS resources that are tagged with an aws:cloudformation:stack-name tag.

D.

Use AWS Config rules to prevent the deletion of RDS resources and EBS resources.

A company operates an API service in the AWS Cloud. The service is based on an Amazon API Gateway REST API that is integrated with an AWS Lambda function. The Lambda function stores data in an Amazon DynamoDB table. The DynamoDB table is configured with on-demand capacity mode.

An application accesses the API service sporadically during the day. Performance testing showed high variability in response time. The first response to identical requests took longer to process compared to subsequent responses.

Which solution will ensure consistent performance?

A.

Configure a Lambda function endpoint as the target for an Amazon Route 53 record set. Use Route 53 latency-based routing to distribute traffic.

B.

Configure provisioned concurrency for the Lambda function. Use AWS Application Auto Scaling with a target tracking scaling policy to manage concurrency based on usage.

C.

Create an Amazon CloudFront distribution that uses the API Gateway endpoint as an origin. Route API requests by using the CloudFront distribution.

D.

Implement DynamoDB Accelerator DAX. Use provisioned capacity mode and auto scaling for the DynamoDB table.

A company plans to refactor a monolithic application into a modern application designed deployed or AWS. The CLCD pipeline needs to be upgraded to support the modem design for the application with the following requirements

• It should allow changes to be released several times every hour.

* It should be able to roll back the changes as quickly as possible.

Which design will meet these requirements?

A.

Deploy a Cl-CD pipeline that incorporates AMIs to contain the application and their configurations Deploy the application by replacing Amazon EC2 instances

B.

Specify AWS Elastic Beanstak to sage in a secondary environment as the deployment target for the CI/CD pipeline of the application. To deploy swap the staging and production environment URLs.

C.

Use AWS Systems Manager to re-provision the infrastructure for each deployment Update the Amazon EC2 user data to pull the latest code art-fact from Amazon S3 and use Amazon Route 53 weighted routing to point to the new environment

D.

Roll out the application updates as pan of an Auto Scaling event using prebuilt AMIs. Use new versions of the AMIs to add instances, and phase out all instances that use the previous AMI version with the configured termination policy during a deployment event.

A company has an internal application running on AWS that is used to track and process shipments in the company’s warehouse. Currently, after the system receives an order, it emails the staff the information needed to ship a package. Once the package is shipped, the staff replies to the email and the order is marked as shipped.

The company wants to stop using email in the application and move to a serverless application model.

Which architecture solution meets these requirements?

A.

Use AWS Batch to configure the different tasks required to ship a package. Have AWS Batch trigger an AWS Lambda function that creates and prints a shipping label. Once that label is scanned, as it leaves the warehouse, have another Lambda function move the process to the next step in the AWS Batch job.

B.

When a new order is created, store the order information in Amazon SQS. Have AWS Lambda check the queue every 5 minutes and process any needed work. When an order needs to be shipped, have Lambda print the label in the warehouse. Once the label has been scanned, as it leaves the warehouse, have an Amazon EC2 instance update Amazon SQS.

C.

Update the application to store new order information in Amazon DynamoDB. When a new order is created, trigger an AWS Step Functions workflow, mark the orders as " in progress, " and print a package label to the warehouse. Once the label has been scanned and fulfilled, the application will trigger an AWS Lambda function that will mark the order as shipped and complete the workflow.

D.

Store new order information in Amazon EFS. Have instances pull the new information from the NFS and send that information to printers in the warehouse. Once the label has been scanned, as it leaves the warehouse, have Amazon API Gateway call the instances to remove the order information from Amazon EFS.

A company is planning to migrate an Amazon RDS for Oracle database to an RDS for PostgreSQL DB instance in another AWS account. A solutions architect needs to design a migration strategy that will require no downtime and that will minimize the amount of time necessary to complete the migration. The migration strategy must replicate all existing data and any new data that is created during the migration The target database must be identical to the source database at completion of the migration process

All applications currently use an Amazon Route 53 CNAME record as their endpoint for communication with the RDS for Oracle DB instance The RDS for Oracle DB instance is in a private subnet.

Which combination of steps should the solutions architect take to meet these requirements? (Select THREE)

A.

Create a new RDS for PostgreSQL DB instance in the target account Use the AWS Schema Conversion Tool (AWS SCT) to migrate the database schema from the source database to the target database

B.

Use the AWS Schema Conversion Tool (AWS SCT) to create a new RDS for PostgreSQL DB instance in the target account with the schema and initial data from thesource database

C.

Configure VPC peering between the VPCs in the two AWS accounts to provide connectivity to both DB instances from the target account. Configure the security groups that are attached to each DB instance to allow traffic on the database port from the VPC in the target account.

D.

Temporarily allow the source DB instance to be publicly accessible to provide connectivity from the VPC in the target account Configure the security groups that are attached to each DB instance to allow traffic on the database port from the VPC in the target account.

E.

Use AWS Database Migration Service (AWS DMS) in the target account to perform a full load plus change data capture (CDC) migration from the source database to the target database When the migration is complete, change the CNAME record to point to the target DB instance endpoint

F.

Use AWS Database Migration Service (AWS DMS) in the target account to perform a change data capture (CDC) migration from the source database to the target database When the migration is complete change the CNAME record to pointto the target DB instance endpoint.

A retail company is operating its ecommerce application on AWS. The application runs on Amazon EC2 instances behind an Application Load Balancer (ALB). The company uses an Amazon RDS DB instance as the database backend. Amazon CloudFront is configured with one origin that points to the ALB. Static content is cached. Amazon Route 53 is used to host all public zones.

After an update of the application, the ALB occasionally returns a 502 status code (Bad Gateway) error. The root cause is malformed HTTP headers that are returned to the ALB. The webpage returns successfully when a solutions architect reloads the webpage immediately after the error occurs.

While the company is working on the problem, the solutions architect needs to provide a custom error page instead of the standard ALB error page to visitors.

Which combination of steps will meet this requirement with the LEAST amount of operational overhead? (Choose two.)

A.

Create an Amazon S3 bucket. Configure the S3 bucket to host a static webpage. Upload the custom error pages to Amazon S3.

B.

Create an Amazon CloudWatch alarm to invoke an AWS Lambda function if the ALB health check response Target.FailedHealthChecks is greater than 0. Configure the Lambda function to modify the forwarding rule at the ALB to point to a publicly accessible web server.

C.

Modify the existing Amazon Route 53 records by adding health checks. Configure a fallback target if the health check fails. Modify DNS records to point to a publicly accessible webpage.

D.

Create an Amazon CloudWatch alarm to invoke an AWS Lambda function if the ALB health check response Elb.InternalError is greater than 0. Configure the Lambda function to modify the forwarding rule at the ALB to point to a public accessible web server.

E.

Add a custom error response by configuring a CloudFront custom error page. Modify DNS records to point to a publicly accessible web page.