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Category: AWS-CDA (v.3)

Briefing AWS-CDA: AWS Certified Developer – Associate (update December 27th, 2017)

You advise them to:

You are providing AWS consulting services for a company developing a new mobile application that will be leveraging
Amazon SNS Mobile Push for push notifications. In order to send direct notification messages to individual devices each
device registration identifier or token needs to be registered with SNS; however the developers are not sure of the best
way to do this. You advise them to:

What is a possible solution to prevent this happening?

You have written an application that uses the Elastic Load Balancing service to spread traffic to several web servers Your
users complain that they are sometimes forced to login again in the middle of using your application, after they have
already togged in. This is not behavior you have designed. What is a possible solution to prevent this happening?

Which recommendations can help ensure load-testing HTTP…

A startup s photo-sharing site is deployed in a VPC. An ELB distributes web traffic across two subnets. ELB session
stickiness is configured to use the AWS-generated session cookie, with a session TTL of 5 minutes. The webserver Auto
Scaling Group is configured as: min-size=4, max-size=4. The startups preparing for a public launch, by running loadtesting software installed on a single EC2 instance running in us-west-2a. After 60 minutes of load-testing, the webserver
logs show:

Which recommendations can help ensure load-testing HTTP requests are evenly distributed across the four webservers?
Choose 2 answers.


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