After creating a new AWS account, you use the API to request 40 on-demand EC2 instances in a single AZ.
After 20 successful requests, subsequent requests failed. What could be a reason for this issue, and how
would you resolve it?

Amazon Glacier is designed for:
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You have an application running in us-west-2 that requires six EC2 instances running at all times. With three
AZs available in that region (us-west-2a, us-west-2b, and us-west-2c), which of the following deployments
provides 100 percent fault tolerance if any single AZ in us-west-2 becomes unavailable?
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What action is required to establish a VPC VPN connection between an on-premises data center and an
Amazon VPC virtual private gateway?

How can software determine the public and private IP addresses of the EC2 instance that it is running on?

A startup company hired you to help them build a mobile application, that will ultimately store billions of images
and videos in S3. The company is lean on funding, and wants to minimize operational costs, however, they
have an aggressive marketing plan, and expect to double their current installation base every six months. Due
to the nature of their business, they are expecting sudden and large increases in traffic to and from S3, and
need to ensure that it can handle the performance needs of their application. What other information must you
gather from this customer in order to determine whether S3 is the right option?

You have an EC2 security group with several running EC2 instances. You change the security group rules to
allow inbound traffic on a new port and protocol, and launch several new instances in the same security group.
The new rules apply:

A VPC public subnet is one that:

In reviewing the Auto Scaling events for your application you notice that your application is scaling up and down
multiple times in the same hour. What design choice could you make to optimize for cost while preserving
elasticity?
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What combination of the following options will protect S3 objects from both accidental deletion and accidental
overwriting?
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