PL-900 Practice Question: Demonstrate the capabilities of Power Automate
Which TWO actions can be used to add conditional logic in a Power Automate flow?
⚠ Common exam trap
A common mix-up: candidates confuse 'Do until' (a loop) or 'Apply to each' (an iterator) with conditional logic because they also involve conditions, but only Switch and Condition are designed for branching based on a condition, not repetition or iteration.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Switch
Option A, Switch, is correct because it evaluates a single expression against multiple case values and routes execution down the matching branch, which is a form of conditional (multi-branch) logic in Power Automate. Option D, Condition, is correct because it is the core conditional action that evaluates a Boolean expression and executes the 'If yes' or 'If no' branch based on the result. Option B, Do until, is a looping action that repeats until a condition is met, but it is categorized as iteration rather than branching conditional logic. Option C, Parallel branch, runs multiple branches simultaneously without evaluating any condition, so it does not add conditional logic. Option E, Apply to each, is a loop that iterates over a collection and does not itself perform conditional evaluation.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Switch
Why this is correct
A Switch control evaluates a single expression against multiple cases, branching the flow down exactly one matching path. This satisfies the stem's requirement for conditional logic by handling multi-outcome decisions, unlike loops or sequential actions, making it one of the two valid branching constructs in Power Automate.
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Do until
Why it's wrong here
'Do until' repeats actions until a condition becomes true, providing loop control rather than branching logic within a single pass. It is tempting because conditions appear in its exit expression, but conditional branching requires the Condition action, which evaluates expressions and routes down Yes/No paths.
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Parallel branch
Why it's wrong here
Parallel branch runs multiple action paths concurrently, not conditionally; it splits execution without evaluating any expression. It is tempting because branches can each contain a Condition, but the branching itself is unconditional. Conditional logic requires the Condition action, which evaluates an expression and routes down Yes or No.
- ✓
Condition
Why this is correct
The Condition action evaluates a Boolean expression and branches the flow into "yes" and "no" paths, satisfying the requirement for conditional logic. It compares values using operators such as equals, greater than, or contains, so subsequent actions run only when the specified criteria are met.
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Apply to each
Why it's wrong here
Apply to each iterates over an array, repeating actions per item; it evaluates no expression and cannot route execution. It is tempting because loops often contain Conditions inside them. Conditional logic requires the Condition action, which tests an expression and takes the Yes or No path.
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