4a Use and Differentiate Resource and Data Blocks TERRAFORM-ASSOCIATE-004 Practice Questions (Page 2)

Questions 6–10

1. 6expert · hard

   A Terraform configuration includes a resource block for an Azure virtual machine. The VM has an argument `os_disk` that includes a `caching` setting. The engineer changes the `caching` setting from `ReadOnly` to `ReadWrite`. The Azure provider marks this argument as forcing replacement. What will Terraform do during `terraform apply`?

   • ATerraform will fail because caching settings cannot be changed after the VM is created.
   • BTerraform will update the VM in place by changing the caching setting without recreating it.
   • CTerraform will destroy the existing VM and create a new one with the updated caching setting.
   • DTerraform will update the state file with the new caching setting but not touch the actual VM.
   Reveal Solution Discussion Select an answer first
2. 7expert · hard

   A team uses Terraform to manage infrastructure in AWS. They have an existing S3 bucket that is used for logging and is NOT managed by Terraform. They need to create a new S3 bucket that replicates objects to the existing bucket. The replication configuration must reference the existing bucket's ARN. The team wants to ensure that if the existing bucket is deleted, Terraform will not try to recreate it. What is the correct approach?

   • AUse a resource block for the existing bucket and a resource block for the new bucket, importing the existing bucket first.
   • BUse a variable for the existing bucket's ARN and a resource block for the new bucket.
   • CUse a data block for the existing bucket and a resource block for the new bucket, referencing the data source's ARN.
   • DUse a local value for the existing bucket's ARN and a resource block for the new bucket.
   Reveal Solution Discussion Select an answer first
4. 8expert · hard

   A Terraform configuration creates an Azure resource group, a virtual network, and a subnet. The subnet references the virtual network's name. The virtual network references the resource group's name. The engineer wants to ensure that the resource group is created before the virtual network, and the virtual network is created before the subnet. Which statement about dependencies is correct?

   • AThe engineer must add `depends_on` to the virtual network to explicitly reference the resource group.
   • BThe engineer must add `depends_on` to the subnet to explicitly reference the resource group.
   • CTerraform will create all three resources in parallel because there are no explicit dependencies.
   • DThe implicit dependencies from attribute references are sufficient to ensure the correct creation order.
   Reveal Solution Discussion Select an answer first
5. 9expert · hard

   A company is adopting Terraform to manage a portion of their AWS environment. They have an existing VPC and an existing security group that are shared across multiple teams. They need to create a new EC2 instance in the existing VPC, using the existing security group. The instance must be recreated if the security group's ID changes, but the VPC and security group must NOT be managed by Terraform. The configuration currently uses data blocks for the VPC and security group. What is the most accurate statement about how Terraform will handle the instance if the security group's ID changes?

   • ATerraform will update the instance in place without recreating it, regardless of the security group change.
   • BTerraform will detect the change in the security group's ID during the plan and propose to replace the EC2 instance because the instance references the data source's attribute.
   • CTerraform will not detect the change because data sources are only read once and never refreshed.
   • DTerraform will fail because data sources cannot be used to create dependencies for resources.
   Reveal Solution Discussion Select an answer first
6. 10foundation · easy

   Which of the following is an example of an implicit dependency in Terraform?

   • AReferencing `aws_instance.web.id` in the configuration of another resource.
   • BListing resources alphabetically in the configuration file.
   • CUsing `depends_on` to ensure a security group is created before an instance.
   • DUsing `terraform plan` to see the order of operations.
   Reveal Solution Discussion Select an answer first