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Category: AWS-SAA (v.2)

Exam AWS-SAA: AWS Certified Solutions Architect – Associate (update July 14th, 2017)

How do you design SQS?

You run a website which hosts videos and you have two types of members, premium fee paying members and
free members. All videos uploaded by both your premium members and free members are processed by a fleet
of EC2 instances which will poll SQS as videos are uploaded. However you need to ensure that your premium
fee paying members videos have a higher priority than your free members. How do you design SQS?

how many subnets must you create within your VPC to ach…

You have been asked to create VPC for your company. The VPC must support both Internet-facing web
applications (ie they need to be publicly accessible) and internal private applications (i.e. they are not publicly
accessible and can be accessed only over VPN). The internal private applications must be inside a private
subnet. Both the internet-facing and private applications must be able to leverage at least three Availability
Zones for high availability. At a minimum, how many subnets must you create within your VPC to achieve this?

How can the current architecture be enhanced to ensure this?

You work for a cosmetic company which has their production website on AWS. The site itself is in a two-tier
configuration with web servers in the front end and database servers at the back end. The site uses using
Elastic Load Balancing and Auto Scaling. The databases maintain consistency by replicating changes to each
other as and when they occur. This requires the databases to have extremely low latency. Your website needs
to be highly redundant and must be designed so that if one availability zone goes offline and Auto Scaling
cannot launch new instances in the remaining Availability Zones the site will not go offline. How can the current
architecture be enhanced to ensure this?


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