1. You have an application hosted in AWS. This application was created using Cloud formation Templates and Auto scaling. Now your application has got a surge of users which is decreasing the performance of the application. As per your analysis, a change in the instance type to C3 would resolve the Issue. Which of the below option can introduce this change while minimizing downtime for end users? Please select:

A) Update the launch configuration in the AWS(Amazon Web Service) Cloud Formation template with the new C3 instance type. Add an Update Policy attribute to the Auto Scaling group that specifies an Auto Scaling Rolling Update. Run a stack update with the updated template.
B) Update the existing launch configuration with the new C3 instance type. Add an Update Policy attribute to your Auto Scaling group that specifies an Auto Scaling Rolling Update in order to avoid downtime.
C) Update the AWS(Amazon Web Service) Cloud Formation template that contains the launch configuration with the new C3 Instance type. Run a stack update with the updated template, and Auto Scaling will then update the instances one at a time with the new instance type.
D) Copy the old launch configuration. and create a new launch configuration with the C3 Instances. Update the Auto Scaling group with the new launch configuration. Auto Scaling will then update the instance type of all instances.



2. You have an application hosted in AWS. You wanted to ensure that when certain thresholds are reached a Dev ops Engineer is notified. Choose 3 answers from the options given below Please select:(Select 3answers)

A) Set the threshold your application can tolerate in a Cloud Watch Logs group and link a Cloud Watch alarm that threshold.
B) Pipe data from EC2 to the application logs using AWS(Amazon Web Service) Data Pipeline and Cloud Watch
C) Use Cloud Watch Logs agent to send log data from the app to Cloud Watch Logs from Amazon EC2 instances
D) Once a Cloud Watch alarm is triggered, use SNS to notify the Senior Dev Ops Engineer.



3. You are creating an application which stores extremely sensitive financial information. All information in the system must be encrypted at rest and in transit. Which of these Is a violation of this policy?

A) Cloud Front Viewer Protocol Policy set to HTTPS redirection.
B) ELB Using Proxy Protocol vi,
C) Telling S3 to use AES2S6 on the server-side. If you use 551 termination, your servers will always get non-secure connections and will never know whether users
D) ELB SSL termination



4. Your application?s Auto Scaling Group scales up too quickly, too much, and stays scaled when traffic decreases. What should you do to fix this?

A) Calculate the bottleneck or constraint on the compute layer. then select that as the new metric, and set tn. metric thresholds to the bounding values that begin to affect response latency.
B) Raise the Cloud Watch Alarms threshold associated with your auto scaling group, so the scaling takes more or an increase in demand before beginning.
C) Use larger instances instead of lots of smaller ones, so the Group stops scaling out so much and wasting resources as the Os level, since the OS uses a higher proportion of resources on smaller instances.
D) Set a longer cooldown period on the Group. so the system stops overshooting the target capacity. The issue is that the scaling system doesn?t allow enough time for new instances to begin servicing requests before measuring aggregate load again.



5. You have an asynchronous processing application using an Auto Scaling Group and an SQS Queue. The Auto Scaling Group scales according to the depth of the job queue. The completion velocity of the jobs has gone down, the Auto Scaling Group size has maxed out, but the inbound job velocity did not increase. What Is a possible issue?

A) The scaling metric is not functioning correctly.
B) Someone changed the lAM Role Policy
C) Some of the new jobs coming in are malformed and un process able.
D) The routing tables changed and none of the workers can process events anymore.