Archive for February 2018

You are responsible for your company's AWS resources, and you notice a significant amount of traffic from an IP address in a foreign country in which your company does not have customers. Further investigation of the traffic indicates the source of the traffic is scanning for open ports on your EC2-VPC instances.

You are responsible for your company's AWS resources, and you notice a significant amount of traffic from an IP address in a foreign country in which...

You have created a custom Amazon VPC with both private and public subnets. You have created a NAT instance and deployed this instance to a public subnet. You have attached an EIP address and added your NAT to the route table. Unfortunately, instances in your private subnet still cannot access the Internet. What may be the cause of this?

You have created a custom Amazon VPC with both private and public subnets. You have created a NAT instance and deployed this instance to a public subnet....

What happens when you create a new Amazon VPC?

What happens when you create a new Amazon VPC? A. A main route table is created by default. B. Three subnets are created by default—one for each Availability...

You are a solutions architect working for a large travel company that is migrating its existing server estate to AWS. You have recommended that they use a custom Amazon VPC, and they have agreed to proceed. They will need a public subnet for their web servers and a private subnet in which to place their databases. They also require that the web servers and database servers be highly available and that there be a minimum of two web servers and two database servers each. How many subnets should you have to maintain high availability?

You are a solutions architect working for a large travel company that is migrating its existing server estate to AWS. You have recommended that they...

You have a popular web application that accesses data stored in an Amazon Simple Storage Service (Amazon S3) bucket. You expect the access to be very read-intensive, with expected request rates of up to 500 GETs per second from many clients. How can you increase the performance and scalability of Amazon S3 in this case?

You have a popular web application that accesses data stored in an Amazon Simple Storage Service (Amazon S3) bucket. You expect the access to be very...

How are you billed for elastic IP addresses?

How are you billed for elastic IP addresses? A. Hourly when they are associated with an instance B. Hourly when they are not associated with an instance C....

Your order-processing application processes orders extracted from a queue with two Reserved Instances processing 10 orders/minute. If an order fails during processing, then it is returned to the queue without penalty. Due to a weekend sale, the queues have several hundred orders backed up. While the backup is not catastrophic, you would like to drain it so that customers get their confirmation emails faster. What is a cost-effective way to drain the queue for orders?

Your order-processing application processes orders extracted from a queue with two Reserved Instances processing 10 orders/minute. If an order fails...

Your company runs an Amazon Elastic Compute Cloud (Amazon EC2) instance periodically to perform a batch processing job on a large and growing filesystem. At the end of the batch job, you shut down the Amazon EC2 instance to save money but need to persist the filesystem on the Amazon EC2 instance from the previous batch runs. What AWS Cloud service can you leverage to meet these requirements?

Your company runs an Amazon Elastic Compute Cloud (Amazon EC2) instance periodically to perform a batch processing job on a large and growing filesystem....

Your company provides an online photo sharing service. The development team is looking for ways to deliver image files with the lowest latency to end users so the website content is delivered with the best possible performance. What service can help speed up distribution of these image files to end users around the world?

Your company provides an online photo sharing service. The development team is looking for ways to deliver image files with the lowest latency to end...
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