1. You have a development team that is planning for continuous release cycles for their application. They want to use the AWS(Amazon Web Service) services available to be able to deploy a web application and also ensure they can rollback to previous versions fairly quickly. Which of the below options can be used to achieve this requirement. Choose 2 answers from the options given below(Select 2answers)

A) Use the Elastic beanstalk service. Use Application versions and upload the revisions of your application. Deploy the revisions accordingly and rollback to prior versions accordingly.
B) Use the Ops work service to deploy the web instances. Deploy the app to the Ops work web layer. Rollback using the Deploy app In Ops work.
C) Use the Cloud formation service. Create separate templates for each application revision and deploy them accordingly.
D) Use the Elastic beanstalk service. Create separate environments for each application revision. Revert back an environment incase the new environment does not work.



2. Your company currently has a set of EC2 Instances sitting behind an Elastic Load Balancer. There is a requirement to create an Ops work stack to host the newer version of this application. The idea Is to first get the stack in place, carry out a level of testing and then deploy it at a later stage. The Ops work stack and layers have been setup. To complete the testing process, the current ELB is being utilized. But you have now noticed that your current application has stopped responding to requests. Why is this the case?

A) You have configured the Opswork stack to deploy new instances in the same domain the older instances
B) This is because the Ops work stack is utilizing the current instances after the ELB was attached as a layer.
C) The ELB would have deregistered the older Instances .
D) This is because the Ops work web layer is utilizing the current instances after the ELB was attached as an additional layer



3. You need to deploy a multi-container Ducker environment on to Elastic beanstalk. Which of the following files can be used to deploy a set of Ducker containers to Elastic beanstalk ?

A) Ducker run
B) Ducker Multi file
C) Ducker run.aws.json
D) Ducker file



4. You have a set of EC2 Instances in an Auto scaling Group that processes messages from an SQS queue. The messages contain the location In S3 from where video?s need to be processed by the EC2 Instances. When a scale in happens, it is noticed that an at times that the EC2 Instance Is still in a state of processing a video when the instance is terminated. How can you implement a solution which will ensure this does not happen? Please select:

A) Change the Cool Down property for the Auto scaling Group
B) Use lifecycle hooks to ensure the processing is complete before the termination occurs
C) Suspend the AZRe balance termination policy
D) Increase the minimum and maximum size for the Auto Scaling group. and change the scaling policies so they scale less dynamically.



5. You are designing a cloud formation template to install a set of web servers on EC2 Instances. The following User data needs to be passed to the EC2 Instances # !/b in/bash sudo apt-get update sudo apt-get install -y nginx Where in the cloudformation template would you ideally pass this User Data Please select:

A) In the Metadata section of the EC2 Instance in the resources section
B) In the Metadata section othe EC2 Instance in the Output section
C) In the properties section of the EC2 Instance in the resources section
D) In the properties section of the EC2 Instance in the Output section