- (Exam Topic 4)
What feature of Terraform Cloud and/or Terraform Enterprise can you publish and maintain a set of custom modules which can be used within your organization?

Correct Answer:C

- (Exam Topic 2)
Terraform has detailed logs which can be enabled by setting the _____ environmental variable.

Correct Answer:C
Terraform has detailed logs that can be enabled by setting the TF_LOG environment variable to any value. This will cause detailed logs to appear on stderr.
You can set TF_LOG to one of the log levels TRACE, DEBUG, INFO, WARN or ERROR to change the verbosity of the logs. TRACE is the most verbose and it is the default if TF_LOG is set to something other than a log level name. https://www.terraform.io/docs/internals/debugging.html

- (Exam Topic 4)
You just upgraded the version of a provider in an existing Terraform project. What do you need to do to install the new provider?

Correct Answer:B
[-upgrade] - Opt to upgrade modules and plugins as part of their respective installation steps. See the sections below for more details. Reference: https://www.terraform.io/cli/commands/init#upgrade

- (Exam Topic 4)
Talal is a DevOps engineer and he has deployed the production infrastructure using Terraform. He is using a very large configuration file to maintain and update the actual infrastructure. As the infrastructure have grown to a very complex and large, he has started experiencing slowness when he run runs terraform plan. What are the options for him to resolve this slowness?

Correct Answer:CD
For larger infrastructures, querying every resource is too slow. Many cloud providers do not provide APIs to query multiple resources at once, and the round trip time for each resource is hundreds of milliseconds. On top of this, cloud providers almost always have API rate limiting so Terraform can only request a certain number of resources in a period of time. Larger users of Terraform make heavy use of the -refresh=false flag as well as the -target flag in order to work around this. In these scenarios, the cached state is treated as the record of truth.
Although 'Use -refresh=false flag as well as the -target flag with terraform plan in order to work around this.' is a solution, but its not always recommended. Instead of using -target as a means to operate on isolated portions of very large configurations, prefer instead to break large configurations into several smaller configurations that can each be independently applied. Data sources can be used to access information about resources created in other configurations, allowing a complex system architecture to be broken down into more manageable parts that can be updated independently.
Option 'Run terraform refresh every time before running terraform plan.' and 'Use -refresh=true flag as well as the -target flag with terraform plan in order to work around this.' is not correct because in both the cases terraform will query every resources of the infrastructure.

- (Exam Topic 2)
Which of the below terraform commands do not run terraform refresh implicitly before taking actual action of the command?

Correct Answer:CD
https://www.terraform.io/docs/commands/refresh.html

- (Exam Topic 4)
You decide to move a Terraform state file to Amazon S3 from another location. You write the code below into a file called

You immediately run terraform apply but don't see any changes. Your state file didn't move. Which command
will migrate your current state file to the new S3 remote backend?

Correct Answer:B