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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Design for Organizational Complexity | 12.5% | - Multi-account AWS environments - Cross-account strategies and AWS organizations
|
| Topic 2: Design for New Solutions | 31% | - Microservices patterns
|
| Topic 3: Cost Control | 18.5% | - Resource efficiency
- Reserved capacity planning
|
| Topic 4: Continuous Improvement for Existing Solutions | 23% | - Operational excellence improvements
|
| Topic 5: Migration Planning | 15% | - Migration strategies
|
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NEW QUESTION # 526
A solutions architect needs to improve an application that is hosted in the AWS Cloud. The application uses an Amazon Aurora MySQL DB instance that is experiencing overloaded connections. Most of the application's operations insert records into the database. The application currently stores credentials in a text-based configuration file.
The solutions architect needs to implement a solution so that the application can handle the current connection load. The solution must keep the credentials secure and must provide the ability to rotate the credentials automatically on a regular basis.
Which solution will meet these requirements?
Answer: B
Explanation:
https://docs.aws.amazon.com/AmazonRDS/latest/AuroraUserGuide/rds-proxy.html
NEW QUESTION # 527
A company is changing the way that it handles patching of Amazon EC2 instances in its application account. The company currently patches instances over the internet by using a NAT gateway in a VPC in the application account. The company has EC2 instances set up as a patch source repository in a dedicated private VPC in a core account. The company wants to use AWS Systems Manager Patch Manager and the patch source repository in the core account to patch the EC2 instances in the application account. The company must prevent all EC2 instances in the application account from accessing the internet. The EC2 instances in the application account need to access Amazon S3, where the application data is stored. These EC2 instances need connectivity to Systems Manager and to the patch source repository in the private VPC in the core account. Which solution will meet these requirements?
Answer: D
Explanation:
Option C is the correct and most efficient solution, aligning with AWS best practices for secure and private connectivity:
Create VPC Endpoints for Systems Manager and Amazon S3:
Systems Manager VPC Endpoints: By creating interface VPC endpoints for Systems Manager (com.amazonaws.region.ssm, com.amazonaws.region.ec2messages, and com.amazonaws.region.ssmmessages), the EC2 instances can communicate with Systems Manager services without requiring internet access. This setup ensures that patching operations can be conducted securely within the AWS network.
Amazon S3 VPC Endpoint: A gateway VPC endpoint for Amazon S3 (com.amazonaws.region.s3) allows EC2 instances to access S3 buckets privately. This is essential for accessing application data stored in S3 without traversing the public internet.
Reference:
Delete the NAT Gateway:
Removing the NAT gateway ensures that EC2 instances in the application account cannot access the internet, satisfying the requirement to prevent internet access. This action enhances the security posture by eliminating a potential vector for unauthorized outbound traffic.
Create a VPC Peering Connection:
Establishing a VPC peering connection between the application account's VPC and the core account's private VPC enables direct, private communication between the EC2 instances in both accounts. This setup allows the application account's EC2 instances to access the patch source repository hosted in the core account securely.
Update Route Tables in Both Accounts:
After setting up the VPC peering connection, it's crucial to update the route tables in both VPCs to allow traffic to flow between them. This configuration ensures that the EC2 instances in the application account can reach the patch source repository in the core account and vice versa.
Why Other Options Are Incorrect:
Option A: Implementing a custom VPN solution introduces unnecessary complexity and operational overhead. Additionally, merely blocking outbound traffic on port 80 does not comprehensively prevent internet access, as other ports (e.g., 443 for HTTPS) remain open.
Option B: Creating private virtual interfaces (VIFs) is typically associated with AWS Direct Connect, which is not applicable in this scenario. Moreover, using a transit gateway, while feasible, is more complex and may be unnecessary for this use case.
Option D: Blocking inbound traffic on port 80 does not prevent outbound internet access. Furthermore, employing a transit gateway adds complexity and cost, which may not be justified given the requirements.
Conclusion:
Option C provides a secure, efficient, and cost-effective solution that meets all the specified requirements:
Prevents EC2 instances from accessing the internet.
Enables access to Amazon S3 and Systems Manager services via VPC endpoints.
Facilitates secure communication with the patch source repository in the core account through VPC peering.
This approach leverages AWS's native networking features to maintain a secure and private environment for patch management operations.
NEW QUESTION # 528
A company is rearchitecting its applications to run on AWS. The company's infrastructure includes multiple Amazon EC2 instances. The company's development team needs different levels of access. The company wants to implement a policy that requires all Windows EC2 instances to be joined to an Active Directory domain on AWS. The company also wants to Implement enhanced security processes such as multi-factor authentication (MFA). The company wants to use managed AWS services wherever possible.
Which solution will meet these requirements?
Answer: B
Explanation:
A is the correct answer because it uses AWS Directory Service for Microsoft Active Directory to join the Windows EC2 instances to an Active Directory domain on AWS and enable MFA. AWS Directory Service for Microsoft Active Directory, also known as AWS Managed Microsoft AD, is a fully managed service that is powered by Windows Server 2019. It allows you to run directory-aware workloads in the AWS Cloud, including Microsoft SharePoint and custom .NET and SQL Server-based applications. You can also configure a trust relationship between AWS Managed Microsoft AD in the AWS Cloud and your existing on-premises Microsoft Active Directory. AWS Managed Microsoft AD supports MFA by integrating with your existing RADIUS-based MFA infrastructure. To join the Windows EC2 instances to an Active Directory domain on AWS, you can use an Amazon Workspace, which is a fully managed, secure desktop computing service that runs on AWS. You can connect to and use the Workspace for domain security configuration tasks. Reference:
https://docs.aws.amazon.com/directoryservice/latest/admin-guide/directory_microsoft_ad.html
https://docs.aws.amazon.com/directoryservice/latest/admin-guide/ms_ad_join_instance.html
https://docs.aws.amazon.com/workspaces/latest/adminguide/amazon-workspaces.html
NEW QUESTION # 529
A solutions architect is importing a VM from an on-premises environment by using the Amazon EC2 VM Import feature of AWS Import/Export. The solutions architect has created an AMI and has provisioned an Amazon EC2 instance that is based on that AMI. The EC2 instance runs inside a public subnet in a VPC and has a public IP address assigned
The EC2 instance does not appear as a managed instance in the AWS Systems Manager console
Which combination of steps should the solutions architect take to troubleshoot this issue"? (Select TWO)
Answer: A,D,E
NEW QUESTION # 530
A health insurance company stores personally identifiable information (PII) in an Amazon S3 bucket. The company uses server-side encryption with S3 managed encryption keys (SSE-S3) to encrypt the objects. According to a new requirement, all current and future objects in the S3 bucket must be encrypted by keys that the company's security team manages. The S3 bucket does not have versioning enabled.
Which solution will meet these requirements?
Answer: B
Explanation:
This solution meets the requirement that all current and future objects in the S3 bucket must be encrypted by keys that the company's security team manages by using Server-Side Encryption with AWS KMS Managed Keys (SSE-KMS). It allows the company's security team to manage, rotate and track the encryption keys and also encrypts all objects in the S3 bucket at rest. To implement this solution, you need to change the default encryption in the S3 bucket properties to SSE-KMS, by doing this all the current and future objects in the bucket will be encrypted by keys that the company's security team manages. Then set an S3 bucket policy to deny unencrypted PutObject requests. Finally, use the AWS CLI to re-upload all objects in the S3 bucket.
It's important to note that since the bucket does not have versioning enabled, re-uploading all objects will overwrite the existing objects in the bucket.
Reference:
https://aws.amazon.com/s3/features/server-side-encryption/
https://aws.amazon.com/kms/
https://aws.amazon.com/s3/features/server-side-encryption/
https://aws.amazon.com/s3/faqs/
https://docs.aws.amazon.com/AmazonS3/latest/user-guide/encryption-using-server-side-encryption.html
NEW QUESTION # 531
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