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NEW QUESTION 44
A Solutions Architect is designing an application in AWS. The Architect must not expose the application or
database tier over the Internet for security reasons. The application must be low-cost and have a scalable
front end. The databases and application tier must have only one-way Internet access to download
software and patch updates.
Which solution helps to meet these requirements?

• A. Use an Amazon EC2-based proxy server as the front end for the application tier, and a NAT Gateway
  to allow Internet access for private resources.
• B. Use an ELB Classic Load Balancer as the front end for the application tier, and a NAT Gateway to
  allow Internet access for private resources.
• C. Use a NAT Gateway as the front end for the application tier and to enable the private resources to
  have Internet access.
• D. Use an ELB Classic Load Balancer as the front end for the application tier, and an Amazon EC2 proxy
  server to allow Internet access for private resources.

Answer: B

NEW QUESTION 45
A company will several AWS accounts is using AWS Organizations and service control policies (SCPs). An Administrator created the following SCP and has attached it to an organizational unit (OU) that contains AWS account 1111-1111-1111:

Developers working in account 1111-1111-1111 complain that they cannot create Amazon S3 buckets. How should the Administrator address this problem?

• A. Instruct the Developers to add Amazon S3 permissions to their IAM entities.
• B. Remove the SCP from account 1111-1111-1111.
• C. Add s3:CreateBucket with "Allow" effect to the SCP.
• D. Remove the account from the OU, and attach the SCP directly to account 1111-1111-1111.

Answer: A

NEW QUESTION 46
A company has developed a mobile game. The backend for the game runs on several virtual machines located in an on-premises data center. The business logic is exposed using a REST API with multiple functions. Player session data is stored file storage. Backend services use different API keys for throttling and to distinguish between live and Test traffic.
The load on the game backend varies throughout the day During peak hours, the server capacity is not sufficient. There are also latency issues when fetching player sessions data. Management has asked a solutions architect to present a cloud architecture that can handle the games varying load and provide low-latency data access. The API model should not be changed.
Which solution meets these requirements?

• A. implement the REST API using a Network Load Ba-ancer (NLB> Run the business logic on an Amazon EC2 instance behind the NLB. Store player session data n Amazon Aurora Serveriess
• B. Implement the REST API using an Application Load Balancer (AL8> Run the busness logic in AWS Lambda Store player session data in Amazon DynamoDB with on-demand capacity
• C. Implement the REST API using AWS AppSync. Run the business logic in AWS Lambda. Store player session data in Amazon Serverless.
• D. Implement the KLSI API using Amazon API Gateway Run the business logic w\ AWS Lambda Store player session data in Amazon DynamoOB with on-demand capacity

Answer: D

NEW QUESTION 47
A bank is re-architecting its mainframe-based credit card approval processing application to a cloud-native application on the AWS cloud.
The new application will receive up to 1,000 requests per second at peak load. There are multiple steps to each transaction, and each step must receive the result of the previous step. The entire request must return an authorization response within less than 2 seconds with zero data loss.
Every request must receive a response. The solution must be Payment Card Industry Data Security Standard (PCI DSS)- compliant.
Which option will meet all of the bank's objectives with the LEAST complexity and LOWEST cost while also meeting compliance requirements?

• A. Create an Application Load Balancer with an Amazon ECS cluster on Amazon EC2 Dedicated instances in a target group to process incoming requests. Use Auto Scaling to scale the cluster out/in based on average CPU utilization. Deploy a web service that processes all of the approval steps and returns a JSON object with the approval status.
• B. Deploy the application on Amazon EC2 on Dedicated Instances. Use an Elastic Load Balancer in front of a farm of application servers in an Auto Scaling group to handle incoming requests. Scale out/in based on a custom Amazon CloudWatch metric for the number of inbound requests per second after measuring the capacity of a single instance.
• C. Create an Amazon API Gateway to process inbound requests using a series of AWS Lambda processes, each with an Amazon SQS input queue. As each step completes, it writes its result to the next step's queue. The final step returns a JSON object with the approval status. Open a support case to increase the limit for the number of concurrent Lambdas to allow room for bursts of activity due to the new application.
• D. Create an Amazon API Gateway to process inbound requests using a single AWS Lambda task that performs multiple steps and returns a JSON object with the approval status. Open a support case to increase the limit for the number of concurrent Lambdas to allow room for bursts of activity due to the new application.

Answer: D

Explanation:
A: The process must complete within 2 seconds. This sounds like what Lambda can do.
B\C: Not the most cost efficient compared to Lambda. Scaling may also not be fast enough.
D: SQS may have data loss due to DLQ? SQS also does not process in order so this may be another problem unless you use FIFO.

NEW QUESTION 48
A company wants to improve the availability and performance of its hybrid application. The application consists of a stateful TCP-based workload hosted on Amazon EC2 instances in different AWS Regions and a stateless UOP-based workload hosted on premises.
Which combination of actions should a solutions architect take to improve availability and performance?
(Choose two.)

• A. Create an Amazon CloudFront distribution with an origin that uses Amazon Route 53 latency-based routing to route requests to the load balancers.
• B. Configure a Network Load Balancer in each Region to address the EC2 endpoints. Configure a Network Load Balancer in each Region that routes to the on-premises endpoints.
• C. Configure a Network Load Balancer in each Region to address the EC2 endpoints. Configure an Application Load Balancer in each Region that routes to the on-premises endpoints
• D. Configure two Application Load Balancers in each Region. The first will route to the EC2 endpoints and the second will route to the on-premises endpoints.
• E. Create an accelerator using AWS Global Accelerator. Add the load balancers as endpoints.

Answer: B,E

NEW QUESTION 49
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