TA-002-P Free Practice Test

- (Exam Topic 4)
In the example below, where is the value of the DNS record's IP address originating from?
* 1. resource "aws_route53_record" "www"
* 2. {
* 3. zone_id = aws_route53_zone.primary.zone_id
* 4. name = "www.example.com"
* 5. type = "A"
* 6. ttl = "300"
* 7. records = [module.web_server.instance_ip_address] 8. }

1. A. The regular expression named module.web_server
2. B. The output of a module named web_server
3. C. By querying the AWS EC2 API to retrieve the IP address
4. D. Value of the web_server parameter from the variables.tf file

Correct Answer: B
In a parent module, outputs of child modules are available in expressions as module.<MODULE NAME>.<OUTPUT NAME>.
For example, if a child module named web_server declared an output named instance_ip_address, you could access that value as module.web_server.instance_ip_address.

- (Exam Topic 2)
What is the command you can use to set an environment variable named "var1"of type String?

1. A. export TF_VAR_VAR1
2. B. set TF_VAR_var1
3. C. variable "var1" { type = "string"}
4. D. export TF_VAR_var1

Correct Answer: D
The environment variable must be in the format TF_VAR_name, so for the QUESTION NO: TF_VAR_var1 is the correct choice.
https://www.terraform.io/docs/commands/environment-variables.html#tf_var_name

- (Exam Topic 4)
Choose the answer that correctly completes the sentence: _______ backends support state locking.

1. A. All
2. B. No
3. C. Only local
4. D. Some

Correct Answer: D

- (Exam Topic 2)
Terraform must track metadata such as resource dependencies. Where is this data stored?

1. A. workspace
2. B. backend
3. C. state file
4. D. metadata store

Correct Answer: C
Terraform typically uses the configuration to determine dependency order. However, when you delete a resource from a Terraform configuration, Terraform must know how to delete that resource. Terraform can see that a mapping exists for a resource not in your configuration and plan to destroy. However, since the configuration no longer exists, the order cannot be determined from the configuration alone.
To ensure correct operation, Terraform retains a copy of the most recent set of dependencies within the state. Now Terraform can still determine the correct order for destruction from the state when you delete one or more items from the configuration.
https://www.terraform.io/docs/state/purpose.html#metadata

- (Exam Topic 1)
You need to constrain the GitHub provider to version 2.1 or greater.
Which of the following should you put into the Terraform 0.12 configuration’s provider block?

1. A. version >= 2.1
2. B. version ~> 2.1
3. C. version = “<= 2.1”
4. D. version = “>= 2.1”

Correct Answer: D
version = ">= 1.2.0, < 2.0.0"
A version constraint is a string literal containing one or more conditions, which are separated by commas. Each condition consists of an operator and a version number.
Version numbers should be a series of numbers separated by periods (like 1.2.0), optionally with a suffix to indicate a beta release.
The following operators are valid:
= (or no operator): Allows only one exact version number. Cannot be combined with other conditions.
!=: Excludes an exact version number.
>, >=, <, <=: Comparisons against a specified version, allowing versions for which the comparison is true. "Greater-than" requests newer versions, and "less-than" requests older versions.
~>: Allows only the rightmost version component to increment. For example, to allow new patch releases within a specific minor release, use the full version number: ~> 1.0.4 will allow installation of 1.0.5 and 1.0.10 but not 1.1.0. This is usually called the pessimistic constraint operator.
https://www.terraform.io/language/expressions/version-constraints