Objective 1.2
PCDEManaging infrastructure
Objective 1.2 sits in Bootstrapping and maintaining a Google Cloud organization, which carries 20% of the Cloud DevOps Engineer exam. The questions below are original, written from the official objective title above, and each explanation cites the Google Cloud page it rests on.
Objective title verbatim from the official objectives. Google Cloud exam page ↗
A worked example
Shown solved, with the whole explanation open: this is what every question here carries.
A team's module outputs an instance name by reading back the input variable that supplied it. What does that construction cost them?
Correct.
Concept
A declarative graph is built from references between resources. Reading a value from the same place that fed it in yields a value that looks correct and a graph that has quietly shed an edge.
Why B
Guidance is to reference an attribute of the resource itself. Routing a value back out through the variable that supplied it stops Terraform from recording that the output rests on the resource.
Source
Google Cloud: Best practices for general style and structure, checked August 2026pass outputs directly through input variables, because doing so prevents them from being properly added to the dependency graph.
Now you: objective 1.2 questions
No account needed. The explanation opens when you answer.
Sample question 1 of 3
An engineer is deciding which module variables deserve default values. Which kind of variable should be left with no default at all?
Sample question 2 of 3
A team maintaining a shared module wants to avoid breaking callers. Which change to the module's variables is the backwards-incompatible one?
Sample question 3 of 3
An engineer sets count from a variable carrying an attribute of a resource that does not exist yet. Terraform reports that the value of count cannot be computed. What resolves it?
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Read the sources
These are the official pages the questions above cite. Reading them is studying the objective from the primary source, which is what the explanations point you toward anyway.