5c Use Modules in Configuration TERRAFORM-ASSOCIATE-004 Practice Questions (Page 1)

Questions 1–5

1. 1foundation · easy

   Module A creates a security group. Module B creates an EC2 instance that needs to use the security group ID from Module A. How can Module B reference the security group created in Module A?

   • AModule A must output the security group ID, and Module B must accept it as an input variable.
   • BModule B can directly reference the resource using module_a.aws_security_group.main.id.
   • CBoth modules must be merged into a single module so the resource can be shared.
   • DModule B can use a data source to look up the security group by name.
   Reveal Solution Discussion Select an answer first
2. 2expert · hard

   A team has a resource aws_instance.web defined in the root module. They want to move it into a module called 'compute'. They have added the resource to the module and added a moved block. However, when they run terraform plan, they see that Terraform still wants to destroy the old resource and create a new one. What is the most likely reason?

   • AThe resource has changed its configuration in the module.
   • BThe moved block is not supported in the Terraform version being used.
   • CThe module source path is incorrect.
   • DThe moved block has an incorrect source or target address.
   Reveal Solution Discussion Select an answer first
4. 3application · medium

   A team has an existing Terraform configuration where resources are defined directly in the root module. They want to refactor the configuration to move a set of resources into a new module called 'database'. They want to avoid destroying and recreating the resources. What should they do?

   • AAdd a moved block that maps the old resource addresses to the new module addresses.
   • BCopy the resource blocks into the module and use terraform import to bring them into the new state.
   • CRemove the resources from the root module and add them to the new module, then run terraform apply.
   • DUse terraform state mv to move the resources into the new module before changing the configuration.
   Reveal Solution Discussion Select an answer first
5. 4foundation · easy

   A resource in the root module references an output from a module. What does this reference create between the resource and the module?

   • AA dependency only if the module has a depends_on argument in its own configuration.
   • BNo dependency, because module outputs are static values that are always available.
   • CAn implicit dependency, so Terraform ensures the module's resources are created before the resource that references the output.
   • DAn explicit dependency that must also be declared with a depends_on argument.
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6. 5expert · hard

   A team has a monolithic configuration with resources defined in the root module. They want to refactor it to use a module. They have already created the module and copied the resource definitions into it. They run terraform plan and see that Terraform wants to destroy the old resources and create new ones. They want to avoid this. What is the most appropriate action?

   • ARun terraform state mv for each resource to move them into the module's state path.
   • BRun terraform apply to accept the destruction and recreation, then update the state.
   • CAdd moved blocks to the configuration to map the old resource addresses to the new module addresses, then run terraform plan again.
   • DUse terraform import to import the new module resources from the existing infrastructure.
   Reveal Solution Discussion Select an answer first