Quick Answer
The answer is to implement buffered reading and process in chunks, as this optimization technique directly addresses the performance bottleneck when handling large files. By reading data in manageable segments rather than loading the entire file into memory, you reduce RAM strain and allow the system to process and discard each chunk sequentially, which speeds up I/O operations and prevents memory overflow. On the CompTIA ITF+ FC0-U61 exam, this concept tests your understanding of resource management and efficient data handling, often appearing in questions about application performance or file processing. A common trap is confusing chunking with recursion, which actually adds overhead, or assuming that comments or variable scope affect execution speed. Remember the mnemonic “Chunk to unclunk” — breaking data into chunks unclogs memory and keeps processing smooth.
This FC0-U61 practice question tests your understanding of software development concepts. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A developer notices that an application runs slowly when processing large files. Which optimization technique is most likely to improve performance?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "most likely"
Why it matters: Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
Increase the scope of variables to avoid passing arguments
Why wrong: Variable scope does not significantly impact performance.
Add more comments to the code
Why wrong: Comments are ignored during execution.
Implement buffered reading and process in chunks
Buffered I/O and chunked processing improve efficiency for large files.
Use recursion instead of loops
Why wrong: Recursion often adds function call overhead and may not be faster.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Implement buffered reading and process in chunks
Option B is correct because processing data in chunks reduces memory usage and can speed up I/O. Option A (using recursion) may increase overhead; Option C (increasing variable scope) won't help; Option D (adding more comments) doesn't affect performance.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
Increase the scope of variables to avoid passing arguments
Why it's wrong here
Variable scope does not significantly impact performance.
Add more comments to the code
Why it's wrong here
Comments are ignored during execution.
Implement buffered reading and process in chunks
Why this is correct
Buffered I/O and chunked processing improve efficiency for large files.
Clue confirmation
The clue word "most likely" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
Use recursion instead of loops
Why it's wrong here
Recursion often adds function call overhead and may not be faster.
Common exam traps
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
A practitioner preparing for the FC0-U61 exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
What to study next
Identify which FC0-U61 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
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FAQ
Software Development Concepts — This question tests Software Development Concepts — Read the scenario before looking for a memorised answer..
The correct answer is: Implement buffered reading and process in chunks — Option B is correct because processing data in chunks reduces memory usage and can speed up I/O. Option A (using recursion) may increase overhead; Option C (increasing variable scope) won't help; Option D (adding more comments) doesn't affect performance.
Identify which FC0-U61 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Yes — watch for: "most likely". Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 24, 2026
This FC0-U61 practice question is part of Courseiva's free CompTIA certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the FC0-U61 exam.
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