SAP-C02 Amazon Web Services AWS Certified Solutions Architect

AWS Certified Solutions Architect - Professional

Architecting Large-Scale Cloud Infrastructures: Why True Multi-Account System Logic Outforms Static Test Banks

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Question # 16

A company is creating a centralized logging service running on Amazon EC2 that will receive and analyze logs from hundreds of AWS accounts. AWS PrivateLink is being used to provide connectivity between the client services and the logging service.

In each AWS account with a client, an interface endpoint has been created for the logging service and is available. The logging service running on EC2 instances with a Network Load Balancer (NLB) are deployed in different subnets. The clients are unable to submit logs using the VPC endpoint.

Which combination of steps should a solutions architect take to resolve this issue? (Select TWO.)

Check that the NACL is attached to the logging service subnet to allow communications to and from the NLB subnets. Check that the NACL is attached to the NLB subnet to allow communications to and from the logging service subnets running on EC2 instances.

Check that the NACL is attached to the logging service subnets to allow communications to and from the interface endpoint subnets. Check that the NACL is attached to the interface endpoint subnet to allow communications to and from the logging service subnets running on EC2 instances.

Check the security group for the logging service running on the EC2 instances to ensure it allows Ingress from the NLB subnets.

Check the security group for the loggia service running on EC2 instances to ensure it allows ingress from the clients.

Check the security group for the NLB to ensure it allows ingress from the interlace endpoint subnets.

Question # 17

A company has a new requirement to store all database backups in an isolated AWS account. The company is using AWS Organizations and has created a central write-once, read-many (WORM) account for the backups.

The company has 40 Amazon RDS for MySQL databases in its production account. The databases are encrypted with the default RDS AWS KMS key. RDS automated backups of the databases occur daily and have a retention period of 30 days.

Which solution will successfully copy the database backups to the central account?

Enable Organizations trusted access and backup policies for AWS Backup. Configure the central account as the delegated administrator for AWS Backup. Create IAM policies and backup policies. Enable cross-account management. Create a backup vault in the central account. Create a KMS key for the backup vault and share the key with the production account. In the production account, restore the databases from a snapshot and apply the shared KMS

Enable Organizations trusted access and backup policies for AWS Backup. Configure the central account as the delegated administrator for AWS Backup. Create IAM policies and backup policies. Enable cross-account management. In the production account, share the default RDS KMS key with the central account. Create a backup vault in the central account. Apply the shared default RDS KMS key to the backup vault. Create a backup plan in the centra

Create an Amazon EventBridge rule to invoke an AWS Lambda function every day. Program the Lambda function to decrypt the snapshots and to initiate a copy request of all unencrypted snapshots to the central account. After the copy job is complete, create a new KMS key. Use the new KMS key to encrypt the database snapshots in the central account.

Create an Amazon EventBridge rule to invoke an AWS Lambda function every day. In the production account, share the default RDS KMS key with the central account. Program the Lambda function to decrypt the snapshots and to initiate a copy request of all unencrypted snapshots to the central account. After the copy job is complete, encrypt the database snapshots with the shared default RDS KMS key in the central account.

Answer:

Explanation:

The company wants backups to be stored in an isolated central account designed for WORM storage. With AWS Organizations, AWS Backup supports centralized, cross-account backup management through delegated administration, backup policies, and cross-account backup vault usage. This provides the least operational overhead and scales to dozens of databases.

A key constraint is encryption. The databases are encrypted with the default RDS AWS KMS key. AWS-managed KMS keys (including the default RDS KMS key) are not customer-managed and generally cannot be shared across accounts for cross-account snapshot copy and cross-account backup workflows that require key sharing and explicit grants. For cross-account backup copies, the source backups must be encrypted with a customer managed KMS key that can be shared (via key policy and grants) with the destination account. Therefore, the company must move away from using the default RDS AWS-managed key for encryption of snapshots that will be copied across accounts.

Option A uses the correct managed approach: enable trusted access and backup policies in Organizations, make the central account the delegated administrator, and use AWS Backup to manage cross-account backups into a central backup vault. It also correctly introduces a customer managed KMS key in the central account for the backup vault and shares that key with the production account. Because the existing databases are encrypted with the default RDS AWS-managed key, option A includes the necessary remediation step: restore (or otherwise recreate) the databases so they are encrypted with the shared customer managed KMS key, enabling future backups and copies to be encrypted with a shareable key and stored in the central vault.

Option B is not workable because it requires “sharing the default RDS KMS key” with another account and using it for the central vault. AWS-managed keys are not shared and are not controlled by customers in a way that supports this cross-account backup model. Therefore, this option fails the encryption requirement.

Option C and option D rely on decrypting snapshots, copying them as unencrypted, and then re-encrypting. This is not a valid or safe operational pattern for RDS automated backups at scale, and it conflicts with typical constraints around snapshot encryption transitions. It also introduces substantial custom automation and operational overhead, and it undermines the objective of a controlled WORM backup account by manipulating encryption state through custom code. Additionally, “decrypting snapshots” is not how encrypted RDS snapshots are typically handled; encrypted snapshots remain encrypted and are copied re-encrypted with a different KMS key that the destination can use, which requires a customer managed key and proper permissions.

Therefore, the successful and scalable solution is to centralize backups with AWS Backup and ensure the databases are encrypted with a customer managed KMS key that can be shared cross-account, as described in option A.

[References:, AWS documentation on AWS Backup centralized management with AWS Organizations, including delegated administrator and backup policies for cross-account governance., AWS documentation on cross-account backup and snapshot copy requirements for encryption, including the need to use AWS KMS customer managed keys for cross-account sharing and re-encryption., AWS guidance that AWS-managed KMS keys (service-managed default keys) are not shareable across accounts for these cross-account encryption and copy workflows., , , , ]

Question # 18

A company has a few AWS accounts for development and wants to move its production application to AWS. The company needs to enforce Amazon Elastic Block Store (Amazon EBS) encryption at rest current production accounts and future production accounts only. The company needs a solution that includes built-in blueprints and guardrails.

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

Use AWS CloudFormation StackSets to deploy AWS Config rules on production accounts.

Create a new AWS Control Tower landing zone in an existing developer account. Create OUs for accounts. Add production and development accounts to production and development OUs, respectively.

Create a new AWS Control Tower landing zone in the company’s management account. Addproduction and development accounts to production and development OUs. respectively.

Invite existing accounts to join the organization in AWS Organizations. Create SCPs to ensure compliance.

Create a guardrail from the management account to detect EBS encryption.

Create a guardrail for the production OU to detect EBS encryption.

Question # 19

A solutions architect has developed a web application that uses an Amazon API Gateway Regional endpoint and an AWS Lambda function. The consumers of the web application are all close to the AWS Region where the application will be deployed. The Lambda function only queries an Amazon Aurora MySQL database. The solutions architect has configured the database to have three read replicas.

During testing, the application does not meet performance requirements. Under high load, the application opens a large number of database connections. The solutions architect must improve the application ' s performance.

Which actions should the solutions architect take to meet these requirements? (Choose two.)

Use the cluster endpoint of the Aurora database.

Use RDS Proxy to set up a connection pool to the reader endpoint of the Aurora database.

Use the Lambda Provisioned Concurrency feature.

Move the code for opening the database connection in the Lambda function outside of the event handler.

Change the API Gateway endpoint to an edge-optimized endpoint.

Question # 20

A company wants to containerize a multi-tier web application and move the application from an on-premises data center to AWS. The application includes web. application, and database tiers. The company needs to make the application fault tolerant and scalable. Some frequently accessed data must always be available across application servers. Frontend web servers need session persistence and must scale to meet increases in traffic.

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

Run the application on Amazon Elastic Container Service (Amazon ECS) on AWS Fargate. Use Amazon Elastic File System (Amazon EFS) for data that is frequently accessed between the web and application tiers. Store the frontend web server session data in Amazon Simple Queue Service (Amazon SOS).

Run the application on Amazon Elastic Container Service (Amazon ECS) on Amazon EC2. Use Amazon ElastiCache for Redis to cache frontend web server session data. Use Amazon Elastic Block Store (Amazon EBS) with Multi-Attach on EC2 instances that are distributed across multiple Availability Zones.

Run the application on Amazon Elastic Kubernetes Service (Amazon EKS). Configure Amazon EKS to use managed node groups. Use ReplicaSets to run the web servers and applications. Create an Amazon Elastic File System (Amazon EFS) Me system. Mount the EFS file system across all EKS pods to store frontend web server session data.

Deploy the application on Amazon Elastic Kubernetes Service (Amazon EKS) Configure Amazon EKS to use managed node groups. Run the web servers and application as Kubernetes deployments in the EKS cluster. Store the frontend web server session data in an Amazon DynamoDB table. Create an Amazon Elastic File System (Amazon EFS) volume that all applications will mount at the time of deployment.

Question # 21

A company has more than 10.000 sensors that send data to an on-premises Apache Kafka server by using the Message Queuing Telemetry Transport (MQTT) protocol. The on-premises Kafka server transforms the data and then stores the results as objects in an Amazon S3 bucket.

Recently, the Kafka server crashed. The company lost sensor data while the server was being restored. A solutions architect must create a new design on AWS that is highly available and scalable to prevent a similar occurrence.

Which solution will meet these requirements?

Launch two Amazon EC2 instances to host the Kafka server in an active/standby configuration across two Availability Zones. Create a domain name in Amazon Route 53. Create a Route 53 failover policy. Route the sensors to send the data to the domain name.

Migrate the on-premises Kafka server to Amazon Managed Streaming for Apache Kafka (Amazon MSK). Create a Network Load Balancer (NLB) that points to the Amazon MSK broker Enable NL8 health checks. Route the sensors to send the data to the NLB.

Deploy AWS loT Core, and connect it to an Amazon Kinesis Data Firehose delivery stream. Use an AWS Lambda function to handle data transformation. Route the sensors to send the data to AWS loT Core.

Deploy AWS loT Core, and launch an Amazon EC2 instance to host the Kafka server. Configure AWS loT Core to send the data to the EC2 instance. Route the sensors to send the data to AWS loT Core.

Question # 22

An enterprise company is building an infrastructure services platform for its users. The company has the following requirements:

Provide least privilege access to users when launching AWS infrastructure so users cannot provision unapproved services.

Use a central account to manage the creation of infrastructure services.

Provide the ability to distribute infrastructure services to multiple accounts in AWS Organizations.

Provide the ability to enforce tags on any infrastructure that is started by users.

Which combination of actions using AWS services will meet these requirements? (Choose three.)

Develop infrastructure services using AWS Cloud Formation templates. Add the templates to acentral Amazon S3 bucket and add the-IAM roles or users that require access to the S3 bucket policy.

Develop infrastructure services using AWS Cloud Formation templates. Upload each template as an AWS Service Catalog product to portfolios created in a central AWS account. Share these portfolios with the Organizations structure created for the company.

Allow user IAM roles to have AWSCloudFormationFullAccess and AmazonS3ReadOnlyAccess permissions. Add an Organizations SCP at the AWS account root user level to deny all services except AWS CloudFormation and Amazon S3.

Allow user IAM roles to have ServiceCatalogEndUserAccess permissions only. Use an automation script to import the central portfolios to local AWS accounts, copy the TagOption assign users access and apply launch constraints.

Use the AWS Service Catalog TagOption Library to maintain a list of tags required by the company. Apply the TagOption to AWS Service Catalog products or portfolios.

Use the AWS CloudFormation Resource Tags property to enforce the application of tags to any CloudFormation templates that will be created for users.

Answer:

B, D, E

Explanation:

Developing infrastructure services using AWS CloudFormation templates and uploading them as AWS Service Catalog products to portfolios created in a central AWS account will enable thecompany to centrally manage the creation of infrastructure services and control who can use them1. AWS Service Catalog allows you to create and manage catalogs of IT services that are approved for use on AWS2. You can organize products into portfolios, which are collections of products along with configuration information3. You can share portfolios with other accounts in your organization using AWS Organizations4.

Allowing user IAM roles to have ServiceCatalogEndUserAccess permissions only and using an automation script to import the central portfolios to local AWS accounts, copy the TagOption, assign users access, and apply launch constraints will enable the company to provide least privilege access to users when launching AWS infrastructure services. ServiceCatalogEndUserAccess is a managed IAM policy that grants users permission to list and view products and launch product instances. An automation script can help import the shared portfolios from the central account to the local accounts, copy the TagOption from the central account, assign users access to the portfolios, and apply launch constraints that specify which IAM role or user can provision a product.

Using the AWS Service Catalog TagOption Library to maintain a list of tags required by the company and applying the TagOption to AWS Service Catalog products or portfolios will enable the company to enforce tags on any infrastructure that is started by users. TagOptions are key-value pairs that you can use to classify your AWS Service Catalog resources. You can create a TagOption Library that contains all the tags that you want to use across your organization. You can apply TagOptions to products or portfolios, and they will be automatically applied to any provisioned product instances.

Creating a product from an existing CloudFormation template

What is AWS Service Catalog?

Working with portfolios

Sharing a portfolio with AWS Organizations

[Providing least privilege access for users]

[AWS managed policies for job functions]

[Importing shared portfolios]

[Enforcing tag policies]

[Working with TagOptions]

[Creating a TagOption Library]

[Applying TagOptions]

Question # 23

A company needs to improve the reliability ticketing application. The application runs on an Amazon Elastic Container Service (Amazon ECS) cluster. The company uses Amazon CloudFront to servo the application. A single ECS service of the ECS cluster is the CloudFront distribution ' s origin.

The application allows only a specific number of active users to enter a ticket purchasing flow. These users are identified by an encrypted attribute in their JSON Web Token (JWT). All other users are redirected to a waiting room module until there is available capacity for purchasing.

The application is experiencing high loads. The waiting room modulo is working as designed, but load on the waiting room is disrupting the application ' s availability. This disruption is negatively affecting the application ' s ticket sale Transactions.

Which solution will provide the MOST reliability for ticket sale transactions during periods of high load? '

Create a separate service in the ECS cluster for the waiting room. Use a separate scaling configuration. Ensure that the ticketing service uses the JWT info-nation and appropriately forwards requests to the waring room service.

Move the application to an Amazon Elastic Kubernetes Service (Amazon EKS) cluster. Split the wailing room module into a pod that is separate from the ticketing pod. Make the ticketing pod part of a StatefuISeL Ensure that the ticketing pod uses the JWT information and appropriately forwards requests to the waiting room pod.

Create a separate service in the ECS cluster for the waiting room. Use a separate scaling configuration. Create a CloudFront function That inspects the JWT information and appropriately forwards requests to the ticketing service or the waiting room service

Move the application to an Amazon Elastic Kubernetes Service (Amazon EKS) cluster. Split the wailing room module into a pod that is separate from the ticketing pod. Use AWS App Mesh by provisioning the App Mesh controller for Kubermetes. Enable mTLS authentication and service-to-service authentication for communication between the ticketing pod and the waiting room pod. Ensure that the ticketing pod uses The JWT information and appropriatel

Question # 24

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?

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.

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.

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.

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.

Question # 25

A large company runs workloads in VPCs that are deployed across hundreds of AWS accounts. Each VPC consists to public subnets and private subnets that span across multiple Availability Zones. NAT gateways are deployed in the public subnets and allow outbound connectivity to the internet from the private subnets.

A solutions architect is working on a hub-and-spoke design. All private subnets in the spoke VPCs must route traffic to the internet through an egress VPC. The solutions architect already has deployed a NAT gateway in an egress VPC in a central AWS account.

Which set of additional steps should the solutions architect take to meet these requirements?

Create peering connections between the egress VPC and the spoke VPCs. Configure the required routing to allow access to the internet.

Create a transit gateway, and share it with the existing AWS accounts. Attach existing VPCs to the transit gateway Configure the required routing to allow access to the internet.

Create a transit gateway in every account. Attach the NAT gateway to the transit gateways. Configure the required routing to allow access to the internet.

Create an AWS PrivateLink connection between the egress VPC and the spoke VPCs. Configure the required routing to allow access to the internet

Question # 26

A company recently started hosting new application workloads in the AWS Cloud. The company is using Amazon EC2 instances, Amazon Elastic File System (Amazon EFS) file systems, and Amazon RDS DB instances.

To meet regulatory and business requirements, the company must make the following changes for data backups:

* Backups must be retained based on custom daily, weekly, and monthlyrequirements.

* Backups must be replicated to at least one other AWS Region immediately after capture.

* The backup solution must provide a single source of backup status across the AWS environment.

* The backup solution must send immediate notifications upon failure of any resource backup.

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

Create an AWS Backup plan with a backup rule for each of the retention requirements.

Configure an AWS backup plan to copy backups to another Region.

Create an AWS Lambda function to replicate backups to another Region and send notification if a failure occurs.

Add an Amazon Simple Notification Service (Amazon SNS) topic to the backup plan to send a notification for finished jobs that have any status except BACKUP- JOB- COMPLETED.

Create an Amazon Data Lifecycle Manager (Amazon DLM) snapshot lifecycle policy for each of the retention requirements.

Set up RDS snapshots on each database.

Question # 27

A company has separate AWS accounts for each of its departments. The accounts are in OUs that are in an organization in AWS Organizations. The IT department manages a private certificate authority (CA) by using AWS Private Certificate Authority in its account.

The company needs a solution to allow developer teams in the other departmental accounts to access the private CA to issue certificates for their applications. The solution must maintain appropriate security boundaries between accounts.

Which solution will meet these requirements?

Create an AWS Lambda function in the IT account. Program the Lambda function to use the AWS Private CA API to export and import a private CA certificate to each department account. Use Amazon EventBridge to invoke the Lambda function on a schedule.

Create an IAM identity-based policy that allows cross-account access to AWS Private CA. In the IT account, attach this policy to the private CA. Grant access to AWS Private CA by using the AWS Private CA API.

In the organization ' s management account, create an AWS CloudFormation stack to set up a resource-based delegation policy.

Use AWS Resource Access Manager (AWS RAM) in the IT account to enable sharing in the organization. Create a resource share. Add the private CA resource to the resource share. Grant the department OUs access to the shared CA.

Question # 28

A solutions architect is investigating an issue in which a company cannot establish new sessions in Amazon Workspaces. An initial analysis indicates that the issue involves user profiles. The AmazonWorkspaces environment is configured to use Amazon FSx for Windows File Server as the profile share storage. The FSx for Windows File Server file system is configured with 10 TB of storage.

The solutions architect discovers that the file system has reached its maximum capacity. The solutions architect must ensure that users can regain access. The solution also must prevent the problem from occurring again.

Which solution will meet these requirements?

Remove old user profiles to create space. Migrate the user profiles to an Amazon FSx for Lustre file system.

Increase capacity by using the update-file-system command. Implement an Amazon CloudWatch metric that monitors free space. Use Amazon EventBridge to invoke an AWS Lambda function to increase capacity as required.

Monitor the file system by using the FreeStorageCapacity metric in Amazon CloudWatch. Use AWS Step Functions to increase the capacity as required.

Remove old user profiles to create space. Create an additional FSx for Windows File Server file system. Update the user profile redirection for 50% of the users to use the new file system.

Question # 29

A company deploys an AI agent on Amazon Bedrock AgentCore Runtime. The agent processes customer requests. Some agent actions are classified as high risk and must receive human approval before proceeding. The workflow must pause the agent, notify a human approver, and resume or cancel the action based on the approver ' s decision. Approvals typically take between 5 minutes and 60 minutes.

Which solution will meet these requirements?

Configure the agent to write high-risk action requests to an Amazon SQS queue. Create a separate polling application that reads the queue and sends approval email messages by using Amazon SES. Configure the application to invoke the agent by providing the approval result.

Configure an AWS Step Functions workflow that invokes the agent. Use a task token callback pattern to pause the workflow when the agent identifies a high-risk action. Send the task token to an approver by using Amazon SNS. Resume or cancel the workflow when the approver responds with the task token.

Configure the agent to invoke an AWS Lambda function for high-risk actions. Configure the Lambda function to send an approval email message by using Amazon SNS. Configure the Lambda function to poll an Amazon DynamoDB table until the approver updates the approval status.

Configure an Amazon EventBridge rule that intercepts all agent actions. Route high-risk actions to a separate approval queue. Create a second agent that monitors the queue and automatically approves or rejects actions without human input based on predefined rules.

Question # 30

A company that develops consumer electronics with offices in Europe and Asia has 60 TB of software images stored on premises in Europe The company wants to transfer the images to an Amazon S3 bucket in the ap-northeast-1 Region New software images are created daily and must be encrypted in transit The company needs a solution that does not require custom development toautomatically transfer all existing and new software images to Amazon S3

What is the next step in the transfer process?

Deploy an AWS DataSync agent and configure a task to transfer the images to the S3 bucket

Configure Amazon Kinesis Data Firehose to transfer the images using S3 Transfer Acceleration

Use an AWS Snowball device to transfer the images with the S3 bucket as the target

Transfer the images over a Site-to-Site VPN connection using the S3 API with multipart upload