ANSWERS

1. a
Explanation:Amazon Elastic Compute Cloud is the central application in the AWS portfolio.

2.  c
Explanation:Through hardware virtualization on Xen hypervisors, Amazon.com has made it possible to create private virtual servers that you can run worldwide.

3. a
Explanation:Amazon Elastic Compute Cloud enables the creation, use, and management of virtual private servers running the Linux or Windows operating system over a Xen hypervisor.

4. b
Explanation:In a loosely coupled SOA system, a transaction manager is required to ensure that messages are not lost when a component isn’t available.

5.  b
Explanation:EC2 is estimated to run on over 40,000+ servers worldwide divided into six availability zones.

6. b
Explanation:The Load Balancing feature can detect when an instance is failing and reroute traffic to a healthy instance, even an instance in other AWS zones.

7. b
Explanation:Autoscaling is part of Amazon Cloudwatch and available at no additional charge.

8. c
Explanation:SNS provides a method for triggering actions, allowing clients or applications to subscribe to information (like RSS), or polling for new or changed information or perform updates.

9. a
Explanation:Amazon Machine Instances (AMIs) in EC2 can be load balanced using the Elastic Load Balancing.

10. d
Explanation:A high speed data transfer feature called AWS Import/Export can transfer data to and from AWS using Amazon’s own internal network to portable storage devices.