Q. What AWS Cloud service provides a logically isolated section of the AWS Cloud where organizations can launch AWS resources in a virtual network that they define?
A. Amazon VPC lets organizations provision a logically isolated section of the AWS Cloud where they can launch AWS resources in a virtual network that they define. Amazon SWF, Amazon Route 53, and AWS CloudFormation do not provide a virtual network. Amazon SWF helps developers build, run, and scale background jobs that have parallel or sequential steps. Amazon Route 53 provides a highly available and scalable cloud Domain Name System (DNS) web service. Amazon CloudFormation gives
developers and systems administrators an easy way
to create and manage a collection of related AWS resources.
Q. Your company provides a mobile voting application for a popular TV show, and 5 to 25 million viewers all vote in a 15-second timespan. What mechanism can you use to decouple the voting application from your back-end services that tally the votes?
A. Amazon SQS is a fast, reliable, scalable, fully managed message queuing service that allows organizations to decouple the components of a cloud application. With Amazon SQS, organizations can transmit any volume of data, at any level of throughput, without losing messages or requiring other services to be always available. AWS CloudTrail records AWS API calls, and Amazon Redshift is a data warehouse, neither of which would be useful as an architecture component for decoupling components. Amazon SNS provides a messaging bus complement
to Amazon SQS; however, it doesn’t provide the
decoupling of components necessary for this scenario.
Q. AWS only for IT Companies?
A. For all IT and NON-IT - AWS Services Can avail respect to their requirements like small , medium and enterprise levels
Q. What are some of the key characteristics of Amazon Simple Storage Service (Amazon S3)?
A. Key characteristics of Amazon S3
objects which are private by default, and storage in a bucket does not need to be pre-allocated.
Q. Which features can be used to restrict access to Amazon Simple Storage Service (Amazon S3) data?
A. To Create a pre-signed URL for an object.
Use an Amazon S3 Access Control List (ACL) on a bucket or object.
Use an Amazon S3 bucket policy.
Static website hosting does not restrict data access, and neither does an Amazon S3 lifecycle policy.