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| Section | Weight | Objectives |
|---|---|---|
| Continuous Improvement for Existing Solutions | 25% | - Operational efficiency - Cost optimization strategies - Security posture improvement - Performance tuning - Automation and infrastructure as code |
| Design for New Solutions | 29% | - High availability and disaster recovery - Performance and reliability design - Service selection and integration - Scalable and resilient architecture - Security and data protection |
| Accelerate Workload Migration and Modernization | 20% | - Migration strategies and planning - Data transfer and synchronization - Modernization approaches - Application and database migration - Migration validation and cutover |
| Design Solutions for Organizational Complexity | 26% | - Hybrid network connectivity - Multi-account and multi-region architecture - Centralized governance and security - Compliance and regulatory requirements - Cost visibility and management |
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NEW QUESTION # 200
A solutions architect is responsible (or redesigning a legacy Java application to improve its availability, data durability, and scalability. Currently, the application runs on a single high-memory Amazon EC2 instance. It accepts HTTP requests Irom upstream clients, adds them to an in-memory queue, and responds with a 200 status. A separate application thread reads items from the queue, processes them, and persists the results to an Amazon RDS MySQL instance. The processing time for each item takes 90 seconds on average, most ol which is spent waiting on external service calls, but the application is written to process multiple items in parallel.
Traffic to this service is unpredictable. During periods of high load, items may sit in the internal queue for over an hour while the application processes the backlog. In addition, the current system has issues with availability and data loss if the single application node fails.
Clients that access this service cannot be modified. They expect to receive a response to each HTTP request they send within 10 seconds before they will time out and retry the request.
Which approach would improve the availability and durability of (he system while decreasing the processing latency and minimizing costs?
Answer: D
NEW QUESTION # 201
A large education company recently introduced Amazon Workspaces to provide access to internal applications across multiple universities. The company is storing user profiles on an Amazon FSx (or Windows File Server file system. The tile system is configured with a DNS alias and is connected to a self-managed Active Directory. As more users begin to use the Workspaces, login time increases to unacceptable levels.
An investigation reveals a degradation in performance of the file system. The company created the file system on HDD storage with a throughput of 16 MBps. A solutions architect must improve the performance of the file system during a defined maintenance window.
What should the solutions architect do to meet these requirements with the LEAST administrative effort?
Answer: C
Explanation:
https://docs.aws.amazon.com/fsx/latest/WindowsGuide/migrate-files-to-fsx-datasync.html
NEW QUESTION # 202
How does in-memory caching improve the performance of applications in ElastiCache?
Answer: D
Explanation:
In Amazon ElastiCache, in-memory caching improves application performance by storing critical pieces of
data in memory for low-latency access. Cached information may include the results of I/O-intensive
database queries or the results of computationally intensive calculations.
Reference: http://aws.amazon.com/elasticache/faqs/#g4
NEW QUESTION # 203
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: C
Explanation:
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 users .
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 # 204
A user is creating a Provisioned IOPS volume.
What is the maximum ratio the user should configure between Provisioned IOPS and the volume size?
Answer: D
Explanation:
Provisioned IOPS SSD (io1) volumes are designed to meet the needs of I/O-intensive workloads, particularly database workloads, that are sensitive to storage performance and consistency.
An io1 volume can range in size from 4 GiB to 16 TiB and you can provision 100 up to 20,000 IOPS per volume. The maximum ratio of provisioned IOPS to requested volume size (in GiB) is
50:1. For example, a 100 GiB volume can be provisioned with up to 5,000 IOPS. Any volume 400 GiB in size or greater allows provisioning up to the 20,000 IOPS maximum.
http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/EBSVolumeTypes.html
NEW QUESTION # 205
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