FC0-U71 Applications and Software Practice Question
A programmer is writing code that needs to repeat a block of instructions 10 times. Which programming construct is best suited for this task?
⚠ Common exam trap
The trap is selecting 'function' because functions also involve reusable code — but reuse is not the same as repetition, and the question specifically asks about repeating instructions a fixed number of times.
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
✓
Loop
A loop is the programming construct designed to repeat a block of instructions multiple times, either a fixed number of iterations (e.g., a for loop running 10 times) or until a condition is met (e.g., a while loop). It directly matches the requirement to repeat code 10 times. This is a fundamental control-flow concept in all programming languages.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Function
Why it's wrong here
A function groups reusable instructions but executes only when called; it provides no inherent iteration, so the block runs once per invocation. It is tempting because functions reduce duplication, but repeating ten times requires a loop calling or containing that code.
- ✗
Variable
Why it's wrong here
A variable stores a value; it cannot iterate or repeat instructions, so the loop never occurs. It is tempting because counters inside loops are variables, but the construct that performs the ten repetitions is the loop itself, not the storage container.
- ✓
Loop
Why this is correct
A loop is the construct designed for iteration, repeating a block of instructions a defined number of times. Setting the loop counter to 10 executes the block exactly ten times, directly satisfying the stated repetition requirement.
- ✗
Conditional (if/else)
Why it's wrong here
A conditional selects between branches based on a Boolean test; it executes at most once per evaluation and provides no repetition mechanism. It is tempting because loops contain conditions, but a condition alone cannot iterate ten times without a loop construct.
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Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed September 2026 · checked against the official CompTIA exam blueprint
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