- A
RecursiveCharacterTextSplitter with chunk_size=5000 and chunk_overlap=0
Why wrong: Large chunks may exceed token limits and lose precision; no overlap may lose context.
- B
CharacterTextSplitter with chunk_size=2000 and chunk_overlap=500
Why wrong: CharacterTextSplitter splits on character, not paragraph, leading to broken sentences.
- C
TokenTextSplitter with chunk_size=100 and chunk_overlap=10
Why wrong: Too small chunks; 100 tokens may not hold enough context.
- D
RecursiveCharacterTextSplitter with chunk_size=1000 and chunk_overlap=200
1000 characters provides good context, 200 overlap (20%) avoids boundary loss.
Question 30 of 991
1Z0-1127 LangChain and AI Application Development Practice Question
This 1Z0-1127 practice question tests your understanding of langchain and ai application development. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. 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 company has a collection of PDF documents that are 500 pages each. They want to build a RAG system using LangChain and FAISS. They need to ensure that each chunk has enough context for accurate retrieval while keeping chunk size small enough for efficient embedding. They also want some overlap between chunks to avoid losing context at boundaries. Which text splitter configuration is most appropriate?
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
✓
RecursiveCharacterTextSplitter with chunk_size=1000 and chunk_overlap=200
RecursiveCharacterTextSplitter with a moderate chunk_size (e.g., 1000 characters) and a chunk_overlap of 10-20% is a standard choice for balancing context and efficiency.
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.
- ✗
RecursiveCharacterTextSplitter with chunk_size=5000 and chunk_overlap=0
Why it's wrong here
Large chunks may exceed token limits and lose precision; no overlap may lose context.
- ✗
CharacterTextSplitter with chunk_size=2000 and chunk_overlap=500
Why it's wrong here
CharacterTextSplitter splits on character, not paragraph, leading to broken sentences.
- ✗
TokenTextSplitter with chunk_size=100 and chunk_overlap=10
Why it's wrong here
Too small chunks; 100 tokens may not hold enough context.
- ✓
RecursiveCharacterTextSplitter with chunk_size=1000 and chunk_overlap=200
Why this is correct
1000 characters provides good context, 200 overlap (20%) avoids boundary loss.
Related concept
Read the scenario before looking for a memorised answer.
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.
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?
LangChain and AI Application Development — This question tests LangChain and AI Application Development — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: RecursiveCharacterTextSplitter with chunk_size=1000 and chunk_overlap=200 — RecursiveCharacterTextSplitter with a moderate chunk_size (e.g., 1000 characters) and a chunk_overlap of 10-20% is a standard choice for balancing context and efficiency.
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.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
About these practice questions
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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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