AWS Certified Associate SAA-C03 Exam Questions and Answers PDF

These two solutions will optimize the HPC environment for networking and storage. Amazon FSx for Lustre is a fully managed service that provides cost-effective, high-performance, scalable storage for compute workloads. It is built on the world’s most popular high-performance file system, Lustre, which is designed for applications that require fast storage, such as HPC and machine learning. By configuring the file system with scratch storage, you can achieve sub-millisecond latencies, up to hundreds of GBs/s of throughput, and millions of IOPS. Scratch file systems are ideal for temporary storage and shorter-term processing of data. Data is not replicated and does not persist if a file server fails. For more information, see Amazon FSx for Lustre.

Elastic Fabric Adapter (EFA) is a network interface for Amazon EC2 instances that enables customers to run applications requiring high levels of inter-node communications at scale on AWS. Its custom-built operating system (OS) bypass hardware interface enhances the performance of inter-instance communications, which is critical to scaling HPC and machine learning applications. EFA provides a low-latency, low-jitter channel for inter-instance communications, enabling your tightly-coupled HPC or distributed machine learning applications to scale to thousands of cores. EFA uses libfabric interface and libfabric APIs for communications, which are supported by most HPC programming models. For more information, see Elastic Fabric Adapter.

The other solutions are not suitable for optimizing the HPC environment for networking and storage. AWS Global Accelerator is a networking service that helps you improve the availability, performance, and security of your public applications by using the AWS global network. It provides two global static public IPs, deterministic routing, fast failover, and TCP termination at the edge for your application endpoints. However, it does not support OS-bypass capabilities or high-performance file systems that are required for HPC and machine learning applications. For more information, see AWS Global Accelerator.

Amazon CloudFront is a content delivery network (CDN) service that securely delivers data, videos, applications, and APIs to customers globally with low latency, high transfer speeds, all within a developer-friendly environment. CloudFront is integrated with AWS services such as Amazon S3, Amazon EC2, AWS Elemental Media Services, AWS Shield, AWS WAF, and AWS Lambda@Edge. However, CloudFront is not designed for HPC and machine learning applications that require high levels of inter-node communications and fast storage. For more information, see [Amazon CloudFront].

AWS Elastic Beanstalk is an easy-to-use service for deploying and scaling web applications and services developed with Java, .NET, PHP, Node.js, Python, Ruby, Go, and Docker on familiar servers such as Apache, Nginx, Passenger, and IIS. You can simply upload your code and Elastic Beanstalk automatically handles the deployment, from capacity provisioning, load balancing, auto-scaling to application health monitoring. However, Elastic Beanstalk is not optimized for HPC and machine learning applications that require OS-bypass capabilities and high-performance file systems. For more information, see [AWS Elastic Beanstalk].

To provide access to the SQS queue to the other company without giving up its own account permissions, a solutions architect should create an SQS access policy that provides the other company access to the SQS queue. An SQS access policy is a resource-based policy that defines who can access the queue and what actions they can perform. The policy can specify the AWS account ID of the other company as a principal, and grant permissions for actions such as sqs:ReceiveMessage, sqs:DeleteMessage, and sqs:GetQueueAttributes. This way, the other company can poll the queue using its own credentials, without needing to assume a role or use cross-account access keys. References:

Using identity-based policies (IAM policies) for Amazon SQS

Using custom policies with the Amazon SQS access policy language

This solution meets the requirements because it uses the following components and features:

AdministratorAccess identity-based policy: This is an AWS managed policy that provides full access to AWSservices and resources1. By attaching this policy to the IAM user group, the solutions architect can grant the permissions needed for the designated employees to perform any task in the AWS account.

IAM user group: This is a collection of IAM users that share common permissions2. By creating a user group and adding the five designated employees as members, the solutions architect can simplify the management of permissions and reduce the risk of human errors or inconsistencies.

IAM users: These are identities that represent the designated employees in AWS2. By creating an IAM user for each employee and requiring them to sign in with their own credentials, the solutions architect can enhance the security and accountability of the AWS account.

This solution meets the following requirements:

It is private and secure, as it allows the EC2 instances to access the S3 bucket without using the public internet. A VPC endpoint is a gateway that enables you to create a private connection between your VPC and another AWS service, such as S3, within the same Region. A VPC endpoint for S3 provides secure and direct access to S3 buckets and objects using private IP addresses from your VPC. You can also use VPC endpoint policies and S3 bucket policies to control the access to the S3 resources based on the endpoint, the IAM user, the IAM role, or the source IP address.

It is simple and scalable, as it does not require any additional AWS services, gateways, or NAT devices. A VPC endpoint for S3 is a fully managed service that scales automatically with the network traffic. You can create a VPC endpoint for S3 with a few clicks in the VPC console or with a simple API call. You can also use the same VPC endpoint to access multiple S3 buckets in the same Region.