- (Exam Topic 1)
A company requires that all internal application connectivity use private IP addresses. To facilitate this policy, a solutions architect has created interface endpoints to connect to AWS public services. Upon testing, the solutions architect notices that the service names are resolving to public IP addresses, and that internal services cannot connect to the interface endpoints.
Which step should the solutions architect take to resolve this issue?
Correct Answer:C
https://docs.aws.amazon.com/vpc/latest/privatelink/vpce-interface.html
- (Exam Topic 2)
A company is hosting a monolithic REST-based API for a mobile app on five Amazon EC2 instances in public subnets of a VPC. Mobile clients connect to the API by using a domain name that is hosted on Amazon Route 53. The company has created a Route 53 multivalue answer routing policy with the IP addresses of all the EC2 instances. Recently, the app has been overwhelmed by large and sudden increases to traffic. The app has not been able to keep up with the traffic.
A solutions architect needs to implement a solution so that the app can handle the new and varying load. Which solution will meet these requirements with the LEAST operational overhead?
Correct Answer:A
- (Exam Topic 2)
A company wants to use Amazon S3 to back up its on-premises file storage solution. The company s
on-premises file storage solution supports NFS and the company wants its new solution to support NFS The company wants to archive the backup Files after 5 days If the company needs archived files for disaster recovery, the company is willing to wait a few days for the retrieval of those Files.
Which solution meets these requirements MOST cost-effectively?
Correct Answer:D
- (Exam Topic 2)
A company is running an application in the AWS Cloud. The application uses AWS Lambda functions and Amazon Elastic Container Service (Amazon ECS) containers that run with AWS Fargate technology as its primary compute. The load on the application is irregular. The application experiences long periods of no usage, followed by sudden and significant increases and decreases in traffic. The application is write-heavy and stores data in an Amazon Aurora MySQL database. The database runs on an Amazon RDS memory optimized D8 instance that is not able to handle the load.
What is the MOST cost-effective way for the company to handle the sudden and significant changes in traffic?
Correct Answer:D
- (Exam Topic 1)
A company has a complex web application that leverages Amazon CloudFront for global scalability and performance. Over time, users report that the web application is slowing down.
The company's operations team reports that the CloudFront cache hit ratio has been dropping steadily. The cache metrics report indicates that query strings on some URLs are inconsistently ordered and are specified sometimes in mixed-case letters and sometimes in lowercase letters.
Which set of actions should the solutions architect take to increase the cache hit ratio as quickly as possible?
Correct Answer:A
https://docs.amazonaws.cn/en_us/AmazonCloudFront/latest/DeveloperGuide/lambda-examples.html#lambda-ex Before CloudFront serves content from the cache it will trigger any Lambda function associated with the
Viewer Request, in which we can normalize parameters.
https://docs.aws.amazon.com/AmazonCloudFront/latest/DeveloperGuide/lambda-examples.html#lambda-examp