Quick Answer
The answer is d4f5e6g because the git log entry for that commit includes the message “Fix password validation bug,” which directly identifies it as the commit that introduced the fix. In Git, each commit is uniquely identified by a hash—a long hexadecimal string often shortened to a short hash like d4f5e6g—and the log displays these hashes alongside commit messages that describe the change. On the CompTIA ITF+ FC0-U61 exam, you may be shown a git log exhibit and asked to match a specific change to its commit hash; a common trap is confusing the order of commits or focusing on the first commit listed, which is often the most recent, not the oldest. Remember that git log shows history in reverse chronological order, so the commit that introduced a fix is the one whose message explicitly states that fix. A helpful memory tip: “Hash the message, not the order”—always read the commit message to confirm the change.
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.
Based on the exhibit, which commit introduced the password validation fix?
e3a1b2c
Why wrong: This commit implemented the login feature.
l0m1n2o
Why wrong: This is the initial commit.
d4f5e6g
This commit has the message 'Fix password validation bug'.
h7i8j9k
Why wrong: This commit added user registration.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
d4f5e6g
The git log shows commits with short hashes and messages. The second commit (d4f5e6g) mentions 'Fix password validation bug'. The first commit is e3a1b2c (login feature), third is h7i8j9k (registration), fourth is initial commit.
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.
e3a1b2c
Why it's wrong here
This commit implemented the login feature.
l0m1n2o
Why it's wrong here
This is the initial commit.
d4f5e6g
Why this is correct
This commit has the message 'Fix password validation bug'.
Related concept
Read the scenario before looking for a memorised answer.
h7i8j9k
Why it's wrong here
This commit added user registration.
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.
Software Development Concepts — study guide chapter
Learn the concepts, then practise the questions
Software Development Concepts practice questions
Targeted practice on this topic area only
All FC0-U61 questions
512 questions across all exam domains
CompTIA ITF+ FC0-U61 study guide
Full concept coverage aligned to exam objectives
FC0-U61 practice test guide
How to use practice tests most effectively before exam day
Related practice questions
Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.
Practise FC0-U61 questions linked to IT Concepts and Terminology.
Practise FC0-U61 questions linked to Infrastructure.
Practise FC0-U61 questions linked to Applications and Software.
Practise FC0-U61 questions linked to Software Development Concepts.
Practise FC0-U61 questions linked to Security.
Practise FC0-U61 questions linked to Database Fundamentals.
Practise FC0-U61 questions linked to FC0-U61 fundamentals.
Practise FC0-U61 questions linked to FC0-U61 scenario.
Practise FC0-U61 questions linked to FC0-U61 troubleshooting.
Practice this exam
Short sessions build daily habit. Longer sessions build exam-day stamina. Try a timed session to simulate real conditions.
FAQ
Software Development Concepts — This question tests Software Development Concepts — Read the scenario before looking for a memorised answer..
The correct answer is: d4f5e6g — The git log shows commits with short hashes and messages. The second commit (d4f5e6g) mentions 'Fix password validation bug'. The first commit is e3a1b2c (login feature), third is h7i8j9k (registration), fourth is initial commit.
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.
Read the scenario before looking for a memorised answer.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
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.
Question Discussion
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
Sign in to join the discussion.