- A
The BLEU score is unreliable for summarization tasks
Why wrong: While BLEU is more suited to translation, it is still used in summarization; the discrepancy is better explained by the nature of the summaries.
- B
The model is overfitting to the training data
Why wrong: ROUGE and BLEU are both computed on held-out test data; overfitting would likely affect both scores similarly, not produce this discrepancy.
- C
The summaries are very short and use different vocabulary from the reference
Short summaries that capture key content (high ROUGE-L) but with different word choices (low n-gram overlap) cause low BLEU.
- D
The summaries are too long and contain many irrelevant n-grams
Why wrong: Long summaries would likely increase BLEU precision unless they use unusual n-grams; this does not explain low BLEU with high ROUGE-L.
1Z0-1127 LLM Fundamentals Practice Question
This 1Z0-1127 practice question tests your understanding of llm fundamentals. Compare every option against the stated constraints before choosing — the best answer satisfies all requirements, not just the most obvious one. 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 data scientist is evaluating a summarization model on a news article dataset. They compute ROUGE-L and BLEU scores. The ROUGE-L score is high, but the BLEU score is low. Which of the following best explains this discrepancy?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue:
"best"Why it matters: Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
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
The summaries are very short and use different vocabulary from the reference
ROUGE-L measures the longest common subsequence, emphasizing recall of key content (n-grams in order). BLEU measures n-gram precision, penalizing short or non-fluent outputs. A high ROUGE-L but low BLEU suggests the summaries capture the main ideas but use different phrasing or are too short.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
The BLEU score is unreliable for summarization tasks
Why it's wrong here
While BLEU is more suited to translation, it is still used in summarization; the discrepancy is better explained by the nature of the summaries.
- ✗
The model is overfitting to the training data
Why it's wrong here
ROUGE and BLEU are both computed on held-out test data; overfitting would likely affect both scores similarly, not produce this discrepancy.
- ✓
The summaries are very short and use different vocabulary from the reference
Why this is correct
Short summaries that capture key content (high ROUGE-L) but with different word choices (low n-gram overlap) cause low BLEU.
Clue confirmation
The clue word "best" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
The summaries are too long and contain many irrelevant n-grams
Why it's wrong here
Long summaries would likely increase BLEU precision unless they use unusual n-grams; this does not explain low BLEU with high ROUGE-L.
Common exam traps
Common exam trap: answer the scenario, not the keyword
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.
Trap categories for this question
Similar concept trap
ROUGE and BLEU are both computed on held-out test data; overfitting would likely affect both scores similarly, not produce this discrepancy.
Detailed technical explanation
How to think about this question
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.
KKey Concepts to Remember
- Read the scenario before looking for a memorised answer.
- Find the constraint that changes the correct option.
- Eliminate answers that are true in general but not in this case.
- Use explanations to understand the rule behind the answer.
TExam Day Tips
- Underline the problem statement mentally.
- Watch for words such as best, first, most likely and least administrative effort.
- Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A practitioner preparing for the 1Z0-1127 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
Got this wrong? Here's your next step.
Identify which 1Z0-1127 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
Questions learners often ask
What does this 1Z0-1127 question test?
LLM Fundamentals — This question tests LLM Fundamentals — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: The summaries are very short and use different vocabulary from the reference — ROUGE-L measures the longest common subsequence, emphasizing recall of key content (n-grams in order). BLEU measures n-gram precision, penalizing short or non-fluent outputs. A high ROUGE-L but low BLEU suggests the summaries capture the main ideas but use different phrasing or are too short.
What should I do if I get this 1Z0-1127 question wrong?
Identify which 1Z0-1127 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.
Are there clue words in this question I should notice?
Yes — watch for: "best". Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
What is the key concept behind this question?
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: Jul 4, 2026
This 1Z0-1127 practice question is part of Courseiva's free Oracle 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 1Z0-1127 exam.
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