What should the SysOps administrator do to meet this requirement?

A company uses an AWS CloudFormation template to provision an Amazon EC2 instance and an Amazon RDS DB instance A SysOps administrator must update the template to ensure that the DB instance is created before the EC2 instance is launched

What should the SysOps administrator do to meet this requirement?
A . Add a wait condition to the template Update the EC2 instance user data script to send a signal after the EC2 instance is started
B . Add the DependsOn attribute to the EC2 instance resource, and provide the logical name of the RDS resource
C . Change the order of the resources in the template so that the RDS resource is listed before the EC2 instance resource
D . Create multiple templates Use AWS CloudFormation StackSets to wait for one stack to complete before the second stack is created

View Answer

Answer: B

Explanation:

https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-attribute-dependson.html

Syntax The DependsOn attribute can take a single string or list of strings. "DependsOn" : [ String, … ] Example The following template contains an AWS::EC2::Instance resource with a DependsOn attribute that specifies myDB, an AWS::RDS::DBInstance. When CloudFormation creates this stack, it first creates myDB, then creates Ec2Instance.