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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Design solutions for organizational complexity | 26% | |
| Topic 2: Continuous improvement for existing solutions | 25% | |
| Topic 3: Accelerate workload migration and modernization | 20% | |
| Topic 4: Design for new solutions | 29% |
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NEW QUESTION # 673
A company hosts a blog post application on AWS using Amazon API Gateway, Amazon DynamoDB, and AWS Lambd a. The application currently does not use API keys to authorize requests. The API model is as follows:
GET/posts/[postid] to get post details
GET/users[userid] to get user details
GET/comments/[commentid] to get comments details
The company has noticed users are actively discussing topics in the comments section, and the company wants to increase user engagement by marking the comments appears in real time.
Which design should be used to reduce comment latency and improve user experience?
Answer: A
Explanation:
https://docs.aws.amazon.com/appsync/latest/devguide/graphql-overview.html AWS AppSync is a fully managed GraphQL service that allows applications to securely access, manipulate, and receive data as well as real-time updates from multiple data sources1. AWS AppSync supports GraphQL subscriptions to perform real-time operations and can push data to clients that choose to listen to specific events from the backend1. AWS AppSync uses WebSockets to establish and maintain a secure connection between the clients and the API endpoint2. Therefore, using AWS AppSync and leveraging WebSockets is a suitable design to reduce comment latency and improve user experience.
NEW QUESTION # 674
A company wants to improve cost awareness for its Amazon EMR platform. The company has aWocated budgets for each team's Amazon EMR usage When a budgetary threshold is reached a notification should be sent by email to the budget office's distribution list Teams should be able lo view their EMR cluster expenses to date A solutions architect needs to create a solution that ensures this policy is proactively and centrally enforced in a multi-account environment
Which combination of steps should the solutions architect take to meet these requirements? (Select TWO.)
Answer: B,D
NEW QUESTION # 675
A company wants to migrate an Amazon Aurora MySQL DB cluster from an existing AWS account to a new AWS account in the same AWS Region. Both accounts are members of the same organization in AWS Organizations.
The company must minimize database service interruption before the company performs DNS cutover to the new database.
Which migration strategy will meet this requirement?
Answer: B
Explanation:
The best migration strategy to meet the requirement of minimizing database service interruption before the DNS cutover is to use AWS DMS to migrate data between the two Aurora DB clusters. AWS DMS can perform continuous replication of data with high availability and consolidate databases into a petabyte-scale data warehouse by streaming data to Amazon Redshift and Amazon S31. AWS DMS supports homogeneous migrations such as migrating from one Aurora MySQL DB cluster to another, as well as heterogeneous migrations between different database platforms2. AWS DMS also supports cross-account migrations, as long as the source and target databases are in the same AWS Region3.
The other options are not optimal for the following reasons:
Option A: Taking a snapshot of the existing Aurora database and restoring it in the new account would require a downtime during the snapshot and restore process, which could be significant for large databases. Moreover, any changes made to the source database after the snapshot would not be replicated to the target database, resulting in data inconsistency4.
Option C: Using AWS Backup to share an Aurora database backup from the existing AWS account to the new AWS account would have the same drawbacks as option A, as AWS Backup uses snapshots to create backups of Aurora databases.
Option D: Using AWS Application Migration Service to migrate data between the two Aurora DB clusters is not a valid option, as AWS Application Migration Service is designed to migrate applications, not databases, to AWS. AWS Application Migration Service can migrate applications from on-premises or other cloud environments to AWS, using agentless or agent-based methods.
References:
1: What Is AWS Database Migration Service? - AWS Database Migration Service
2: Sources for Data Migration - AWS Database Migration Service
3: AWS Database Migration Service FAQs
4: Working with DB Cluster Snapshots - Amazon Aurora
[Backing Up and Restoring an Amazon Aurora DB Cluster - Amazon Aurora]
[What is AWS Application Migration Service? - AWS Application Migration Service]
NEW QUESTION # 676
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 monthly
requirements.
- 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 these requirements with the LEAST amount of operational overhead? (Choose three.)
Answer: B,E,F
Explanation:
https://docs.aws.amazon.com/AWSEC2/latest/WindowsGuide/snapshot-lifecycle.html
NEW QUESTION # 677
An events company runs a ticketing platform on AWS. The company's customers configure and schedule their events on the platform The events result in large increases of traffic to the platform The company knows the date and time of each customer's events The company runs the platform on an Amazon Elastic Container Service (Amazon ECS) cluster The ECS cluster consists of Amazon EC2 On-Demand Instances that are in an Auto Scaling group. The Auto Scaling group uses a predictive scaling policy The ECS cluster makes frequent requests to an Amazon S3 bucket to download ticket assets The ECS cluster and the S3 bucket are in the same AWS Region and the same AWS account Traffic between the ECS cluster and the S3 bucket flows across a NAT gateway The company needs to optimize the cost of the platform without decreasing the platform's availability Which combination of steps will meet these requirements? (Select TWO)
Answer: A,C
Explanation:
* Gateway VPC Endpoint for S3:
* Create a gateway VPC endpoint for Amazon S3 in your VPC. This allows instances in your VPC to communicate with Amazon S3 without going through the internet, reducing data transfer costs and improving security.
* Add Spot Instances to ECS Cluster:
* Add another ECS capacity provider that uses an Auto Scaling group of Spot Instances. Configure this new capacity provider to share the load with the existing On-Demand Instances by setting an appropriate weight in the capacity provider strategy. Spot Instances offer significant cost savings compared to On-Demand Instances.
* Configure Capacity Provider Strategy:
* Adjust the ECS service's capacity provider strategy to utilize both On-Demand and Spot Instances effectively. This ensures a balanced distribution of tasks across both instance types, optimizing cost while maintaining availability.
By implementing a gateway VPC endpoint for S3 and incorporating Spot Instances into the ECS cluster, the company can significantly reduce operational costs without compromising on the availability or performance of the platform.
References
* AWS Cost Optimization Blog on VPC Endpoints
* AWS ECS Documentation on Capacity Providers
NEW QUESTION # 678
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