5c Use Modules in Configuration TERRAFORM-ASSOCIATE-004 Practice Questions (Page 2)

Questions 6–10

1. 6application · medium

   A configuration has a module that creates a security group and another module that creates an EC2 instance. The instance module needs the security group ID. The security group module outputs sg_id. How does Terraform determine the order in which to create these resources?

   • ATerraform creates both modules in parallel because they are independent modules.
   • BTerraform creates the instance module first because it is defined later in the configuration.
   • CTerraform creates the security group module first because the instance module references its output, creating an implicit dependency.
   • DTerraform requires an explicit depends_on block to ensure the security group is created first.
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2. 7foundation · easy

   A resource was previously defined directly in the root module as aws_instance.web. A developer is refactoring the configuration to move this resource into a module named "web". What is the purpose of adding a moved block to the configuration?

   • AIt copies the resource configuration from the root module into the module directory.
   • BIt creates a backup of the resource before it is destroyed.
   • CIt forces Terraform to recreate the resource in the new location to ensure it is configured correctly.
   • DIt tells Terraform to treat the existing resource as if it had always been defined in the new location, avoiding destruction and recreation.
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4. 8foundation · easy

   A module defines an output named vpc_id. In the root module, a resource needs to use this value. Which expression correctly references the module's output?

   • Aoutput.vpc.vpc_id
   • Bvar.vpc.vpc_id
   • Cmodule.vpc.vpc_id
   • Dmodule.vpc.outputs.vpc_id
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5. 9foundation · easy

   A configuration has two module blocks that both use the same source: "./modules/vpc". The first block has the local name "vpc_a" and the second has "vpc_b". How does Terraform distinguish the resources created by these two module instances?

   • ATerraform requires the module to have a variable that sets a unique name for each resource.
   • BTerraform automatically adds a numeric suffix to resource names, such as aws_vpc.this_1 and aws_vpc.this_2.
   • CResources are tracked with addresses that include the module's local name, such as module.vpc_a.aws_vpc.this and module.vpc_b.aws_vpc.this.
   • DThe resources are identical, and Terraform merges them into a single set of resources.
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6. 10foundation · easy

   A module block is written as follows: module "database" { source = "terraform-aws-modules/rds/aws" version = "6.0.0" db_name = "mydb" } What is the purpose of the version argument in this block?

   • AIt is a required argument that must match the module's internal version variable.
   • BIt sets the database engine version for the RDS instance.
   • CIt defines the Terraform language version required to run this module.
   • DIt specifies which version of the module to download from the registry.
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