Availability

Question 1

EC2 launch configurations vs EC2 launch templates

Answer 1

launch templates are newer and support versioning

Question 2

Max number of transactions to SQS FIFO queue per sec

Answer 2

300/sec

batch 3,000/sec with batch max 10

Question 3

Load balancer that supports path based routing

Answer 3

Application Load Balancer

Question 4

If your users are having latency issues when logging into an application hosted on CloudFront and are occassionally experiencing 504 errors, what are 2 cost effective solutions to eleviate these issues

Answer 4

Lambda@Edge for logging in to have functions closer to users georgraphical locations

Set up Origin Failover when users get a 504 error send them to secondary origin

Question 5

In Cloudformation, how to ensure that the required components of an instance are properly running before the stack creation proceeds.

Answer 5

Use CreationPolicy attribute
Send a success signal after the applications are installed and configured using the cfn-signal helper script i

Question 6

AWS Resources that ensure 1 time message processing (queue)

Answer 6

SQS FIFO Queue
Amazon Simple Workflow Service

Question 7

Message Limit of a FIFO Queue

Answer 7

3000