Run - My ASP.NET Application

Test 1

1. A university is running an internal web application on AWS that students can access from the university network to check their exam results. The web application runs on Amazon EC2 instances and pulls results from an Amazon DynamoDB table. Auto Scaling is currently configured to add a new web server when CPU greater than 80% for 5 minutes. DynamoDB is configured to increase both read and write capacity units by five when utilization is greater than 80%. Exam are released at 9:00 a.m, each Monday, and 80% of students attempt to access their unique results within the first 30 minutes. Despite Auto Scaling enabled, students are complaining of slow response times and errors when they view the site. There are no performance complaints after 9:30 am. Which recommendation should a Solutions Architect make to improve performance in a cost-effective manner?
Use a scheduled job to scale out EC2 before 9:00 am on Monday and to scale down after 9:30 am Scale out the EC2 instances to ensure that the environment scales up and down based on the highest load Implement Amazon DynamoDB Accelerator to improve database performance and remove the need to scale the read/write units. Use Amazon cloudfront to cache web request and reduce the load on EC2 and DynamoDB
2. A Solutions Architect is concerned that the current security group rules for a database tier are too permissive and may permit requests that should be restricted. Below are the current Security group permissions for the database tier: – Protocol: TCP – Port Range: 1433 (MS SQL) – Source: ALL Currently, the only identified resource that needs to connect to the databases the application tier consisting of an Auto Scaling group of EC2 instances. What changes can be made to this security group that would offer the users LEAST privilege?
Change the source to the application instances IDs. Change the source to the security group ID attached to the application instances. Change the source to the VPC CIDR block Change the source to -1 to remove source lP addresses Previously unseen
3. Which requirements must be met in order for a Solutions Architect to specify that an Amazon EC2 instance should stop rather than terminate its Spot Instance is interrupted? (Select TWO.)
The launch configuration is changed. The root volume must be an Amazon EBS volume The root volume must be an instance store volume. The Spot Instance request type must be one-time. The Spot Instance request type must be persistent.