You are responsible for creating an AWS Elastic Beanstalk environment as soon as possible by using CLI commands. It is a PHP application installed on the Linux server. Besides, in the new environment, a cron job should be set up in all instances. The file named as cron-linux is prepared for this and uploaded together with other application source code in an S3 bucket. Which kind of config file and CLI command are correct to create this Elastic Beanstalk environment? 

Answer options:

A.B.C.D.

Correct Answer – B
Configuration (.config) files for Elastic Beanstalk are put in the .ebextensions folder together with other application codes. Please check for the details of setting configurations during environment creation.
https://docs.aws.amazon.com/elasticbeanstalk/latest/dg/environment-configuration-methods-during.html#configuration-options-during-console-ebextensions
Option A is incorrect: Because firstly, it should be cron-linux.config. Secondly, if AWS Elastic Beanstalk CLI is used, the create-environment command should add options such as --environment-name test-env.
Option B is CORRECT: Because cron-linux.config has been put into the right place and eb create command is suitable to create the environment.
Option C is incorrect: Because cron-linux.cfg.yml has been put into the folder of .elasticbeanstalk/saved_configs/. This is how saved configuration is used for Elastic Beanstalk. However, in this case, the config file instead of a saved configuration is needed to set up the cron job. Besides, the AWS Elastic Beanstalk CLI command is used incorrectly.
Option D is incorrect: Because cron-linux.config should be placed into .ebextensions rather than .elasticbeanstalk/saved_configs/.