- A
Use tree-of-thought to explore all possible reasoning branches
Why wrong: Tree-of-thought is not essential for self-consistency; it is a separate technique for exploring reasoning branches.
- B
Use a chain-of-thought prompt to guide the generation of reasoning paths.
Why wrong: This is correct because self-consistency uses chain-of-thought prompts to structure the reasoning steps, enabling diverse yet coherent reasoning paths.
- C
Set temperature to 0 for reproducible outputs
Why wrong: Temperature 0 yields deterministic, identical outputs, preventing the diversity required for self-consistency.
- D
Aggregate the outputs (e.g., by majority voting or marginalizing over reasoning steps) to select the most consistent answer
Correct. Aggregating outputs (e.g., majority voting) is the final step in self-consistency.
- E
Generate multiple independent reasoning paths by running the prompt several times with a non-zero temperature
Correct. Generating multiple independent reasoning paths with non-zero temperature is the first essential step.
Self-Consistency Steps — Implementing Self-Consistency in Prompt Engineering | Oracle Cloud Infrastructure Generative AI Professional Explained
This 1Z0-1127 practice question tests your understanding of prompt engineering. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. A key principle to apply: self-consistency. 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 prompt engineer is using the self-consistency technique to improve answer reliability. Which TWO steps are essential when implementing self-consistency?
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
Aggregate the outputs (e.g., by majority voting or marginalizing over reasoning steps) to select the most consistent answer
Self-consistency involves two essential steps. First, generate multiple independent reasoning paths by running the prompt several times with a non-zero temperature to ensure diversity (option E). Second, aggregate the outputs (e.g., by majority voting or marginalizing over reasoning steps) to select the most consistent answer (option D). Options D and E are correct. Option B is not essential because chain-of-thought prompting is a separate technique that can be used with self-consistency but is not required for the method.
Key principle: Self-consistency
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Use tree-of-thought to explore all possible reasoning branches
Why it's wrong here
Tree-of-thought is not essential for self-consistency; it is a separate technique for exploring reasoning branches.
- ✗
Use a chain-of-thought prompt to guide the generation of reasoning paths.
Why it's wrong here
This is correct because self-consistency uses chain-of-thought prompts to structure the reasoning steps, enabling diverse yet coherent reasoning paths.
- ✗
Set temperature to 0 for reproducible outputs
Why it's wrong here
Temperature 0 yields deterministic, identical outputs, preventing the diversity required for self-consistency.
- ✓
Aggregate the outputs (e.g., by majority voting or marginalizing over reasoning steps) to select the most consistent answer
Why this is correct
Correct. Aggregating outputs (e.g., majority voting) is the final step in self-consistency.
Related concept
Self-consistency
- ✓
Generate multiple independent reasoning paths by running the prompt several times with a non-zero temperature
Why this is correct
Correct. Generating multiple independent reasoning paths with non-zero temperature is the first essential step.
Related concept
Self-consistency
Common exam traps
Common exam trap: answer the scenario, not the keyword
Candidates often think temperature must be zero for reproducibility, but self-consistency requires non-zero temperature to generate diverse reasoning paths.
Trap categories for this question
Command / output trap
Temperature 0 yields deterministic, identical outputs, preventing the diversity required for self-consistency.
Detailed technical explanation
How to think about this question
Treat this as a scenario question. Identify the problem, the constraint, and the best action. Then compare each option against those facts.
KKey Concepts to Remember
- Self-consistency
- Chain-of-thought prompting
- Temperature sampling
- Aggregation via majority voting
TExam Day Tips
- 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
Self-consistency
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. Self-consistency 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.
Review self-consistency, then practise related 1Z0-1127 questions on the same topic to reinforce the concept.
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Prompt Engineering — study guide chapter
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FAQ
Questions learners often ask
What does this 1Z0-1127 question test?
Prompt Engineering — This question tests Prompt Engineering — Self-consistency.
What is the correct answer to this question?
The correct answer is: Aggregate the outputs (e.g., by majority voting or marginalizing over reasoning steps) to select the most consistent answer — Self-consistency involves two essential steps. First, generate multiple independent reasoning paths by running the prompt several times with a non-zero temperature to ensure diversity (option E). Second, aggregate the outputs (e.g., by majority voting or marginalizing over reasoning steps) to select the most consistent answer (option D). Options D and E are correct. Option B is not essential because chain-of-thought prompting is a separate technique that can be used with self-consistency but is not required for the method.
What should I do if I get this 1Z0-1127 question wrong?
Review self-consistency, then practise related 1Z0-1127 questions on the same topic to reinforce the concept.
What is the key concept behind this question?
Self-consistency
About these practice questions
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Same concept, more angles
1 more ways this is tested on 1Z0-1127
These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. A prompt engineer wants to use the self-consistency technique to improve answer reliability. Which THREE steps are part of implementing self-consistency?
medium- A.Use a single response with high temperature
- ✓ B.Generate multiple independent responses using chain-of-thought prompting
- ✓ C.Set temperature to a non-zero value to introduce variation
- ✓ D.Aggregate the final answers across the responses, e.g., by majority vote
- E.Use a stop sequence after each reasoning step
Why B: Option B is correct because self-consistency relies on generating multiple diverse reasoning paths via chain-of-thought (CoT) prompting. This technique samples several independent responses, each following a step-by-step reasoning process, to capture different valid approaches to the same problem.
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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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