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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Accelerate Workload Migration and Modernization | 20% | - Modernize applications and data platforms - Develop migration strategies and plans - Migrate applications, data, and infrastructure - Integrate AWS services with existing systems |
| Topic 2: Continuous Improvement for Existing Solutions | 25% | - Refactor and modernize legacy applications - Apply security best practices and compliance updates - Implement monitoring, logging, and observability - Optimize existing workloads for cost, performance, and security |
| Topic 3: Design Solutions for Organizational Complexity | 26% | - Design for operational excellence and automation - Design for compliance and governance requirements - Design hybrid and multi-cloud networking - Design multi-account and multi-region architectures |
| Topic 4: Design for New Solutions | 29% | - Design secure and resilient architectures - Design for reliability and fault tolerance - Design cost-optimized architectures - Design high-performing and scalable solutions |
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NEW QUESTION # 83
A company has built a high performance computing (HPC) cluster in AWS tor a tightly coupled workload that generates a large number of shared files stored in Amazon EFS. The cluster was performing well when the number of Amazon EC2 instances in the cluster was 100. However, when the company increased the cluster size to 1,000 EC2 instances, overall performance was well below expectations.
Which collection of design choices should a solutions architect make to achieve the maximum performance from the HPC cluster? (Select THREE.)
Answer: D,E,G
Explanation:
Cluster - packs instances close together inside an Availability Zone. This strategy enables workloads to achieve the low-latency network performance necessary for tightly-coupled node-to-node communication that is typical of HPC applications.
https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/placement-groups.html
Explanation:
A) High performance computing (HPC) workload cluster should be in a single AZ.
C) Elastic Fabric Adapter (EFA) is a network device that you can attach to your Amazon EC2 instances to accelerate High Performance Computing (HPC)
NEW QUESTION # 84
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?
Answer: D
NEW QUESTION # 85
A company has a website that serves many visitors. The company deploys a backend service for the website in a primary AWS Region and a disaster recovery (DR) Region.
A single Amazon CloudFront distribution is deployed for the website. The company creates an Amazon Route 53 record set with health checks and a failover routing policy for the primary Region's backend service. The company configures the Route 53 record set as an origin for the CloudFront distribution. The company configures another record set that points to the backend service's endpoint in the DR Region as a secondary failover record type. The TTL for both record sets is 60 seconds.
Currently, failover takes more than 1 minute. A solutions architect must design a solution that will provide the fastest failover time.
Which solution will achieve this goal?
Answer: C
NEW QUESTION # 86
A company runs an application in an on-premises data center. The application gives users the ability to upload media files. The files persist in a file server. The web application has many users. The application server is overutilized, which causes data uploads to fail occasionally. The company frequently adds new storage to the file server. The company wants to resolve these challenges by migrating the application to AWS.
Users from across the United States and Canada access the application. Only authenticated users should have the ability to access the application to upload files. The company will consider a solution that refactors the application, and the company needs to accelerate application development.
Which solution will meet these requirements with the LEAST operational overhead?
Answer: B
Explanation:
The company should use AWS Amplify to create a static website for uploads of media files. The company should use Amplify Hosting to serve the website through Amazon CloudFront. The company should use Amazon S3 to store the uploaded media files. The company should use Amazon Cognito to authenticate users.
This solution will meet the requirements with the least operational overhead because AWS Amplify is a complete solution that lets frontend web and mobile developers easily build, ship, and host full-stack applications on AWS, with the flexibility to leverage the breadth of AWS services as use cases evolve. No cloud expertise needed1. By using AWS Amplify, the company can refactor the application to a serverless architecture that reduces operational complexity and costs. AWS Amplify offers the following features and benefits:
* Amplify Studio: A visual interface that enables you to build and deploy a full-stack app quickly, including frontend UI and backend.
* Amplify CLI: A local toolchain that enables you to configure and manage an app backend with just a few commands.
* Amplify Libraries: Open-source client libraries that enable you to build cloud-powered mobile and web apps.
* Amplify UI Components: Open-source design system with cloud-connected components for building feature-rich apps fast.
* Amplify Hosting: Fully managed CI/CD and hosting for fast, secure, and reliable static and server-side rendered apps.
By using AWS Amplify to create a static website for uploads of media files, the company can leverage Amplify Studio to visually build a pixel-perfect UI and connect it to a cloud backend in clicks. By using Amplify Hosting to serve the website through Amazon CloudFront, the company can easily deploy its web app or website to the fast, secure, and reliable AWS content delivery network (CDN), with hundreds of points of presence globally. By using Amazon S3 to store the uploaded media files, the company can benefit from a highly scalable, durable, and cost-effective object storage service that can handle any amount of data2. By using Amazon Cognito to authenticate users, the company can add user sign-up, sign-in, and access control to its web app with a fully managed service that scales to support millions of users3.
The other options are not correct because:
* Using AWS Application Migration Service to migrate the application server to Amazon EC2 instances would not refactor the application or accelerate development. AWS Application Migration Service (AWS MGN) is a service that enables you to migrate physical servers, virtual machines (VMs), or cloud servers from any source infrastructure to AWS without requiring agents or specialized tools.
However, this would not address the challenges of overutilization and data uploads failures. It would also not reduce operational overhead or costs compared to a serverless architecture.
* Creating a static website for uploads of media files and using AWS AppSync to create an API would not be as simple or fast as using AWS Amplify. AWS AppSync is a service that enables you to create flexible APIs for securely accessing, manipulating, and combining data from one or more data sources.
However, this would require more configuration and management than using Amplify Studio and Amplify Hosting. It would also not provide authentication features like Amazon Cognito.
* Setting up AWS IAM Identity Center (AWS Single Sign-On) to give users the ability to sign in to the application would not be as suitable as using Amazon Cognito. AWS Single Sign-On (AWS SSO) is a service that enables you to centrally manage SSO access and user permissions across multiple AWS accounts and business applications. However, this service is designed for enterprise customers who need to manage access for employees or partners across multiple resources. It is not intended for authenticating end users of web or mobile apps.
References:
* https://aws.amazon.com/amplify/
* https://aws.amazon.com/s3/
* https://aws.amazon.com/cognito/
* https://aws.amazon.com/mgn/
* https://aws.amazon.com/appsync/
* https://aws.amazon.com/single-sign-on/
NEW QUESTION # 87
A company has an application that is deployed on Amazon EC2 instances behind an Application Load Balancer (ALB). The instances are part of an Auto Scaling group. The application has unpredictable workloads and frequently scales out and in. The company's development team wants to analyze application logs to find ways to improve the application's performance. However, the logs are no longer available after instances scale in.
Which solution will give the development team the ability to view the application logs after a scale-in event?
Answer: D
Explanation:
Explanation
https://docs.aws.amazon.com/elasticloadbalancing/latest/application/load-balancer-access-logs.html
NEW QUESTION # 88
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