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You have a set of applications, databases and web servers hosted in AWS. The web servers are placed behind an ELB. There are separate security groups for the application, database and web servers. The security groups have been defined accordingly. There is an issue with the communication between the application and database servers. In order to troubleshoot the issue between just the application and database server, what is the ideal set of MINIMAL steps you would take?

When using an IaaS solution, what is the capability provided to the customer?

You are planning to deploy several EC2 instances in your VPC. You will deploy the EC2 instances across several subnets and multiple AZs. What AWS feature can act as an instance-level firewall to control traffic between your EC2 instances?

What things does an Application Load Balancer require to function?

wants to use an AWS feature that will help them reduce their expenses by spinning up EC2 instances based on demand. Which feature is that?

Which of these is not a major type of cloud computing usage?

What is Cloud Computing replacing?

You currently have your EC2 instances running in multiple availability zones in an AWS region. You need to create NAT gateways for your private instances to access internet. How would you set up the NAT gateways so that they are highly available?

What is Cloud Computing replacing?

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