1Z0-1127-25 LangChain and AI Application Development Practice Question
A developer is using LangChain's RecursiveCharacterTextSplitter with chunk_size=1000 and chunk_overlap=200. Which statement best describes the resulting chunks?
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
✓
Chunks are at most 1000 characters, and consecutive chunks overlap by 200 characters
With chunk_size=1000 and chunk_overlap=200, each chunk is up to 1000 characters and consecutive chunks share 200 characters of overlap to preserve context across boundaries. The splitter recursively tries to split on separators like newlines to keep chunks semantically coherent.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Chunks are at most 1000 characters, and consecutive chunks overlap by 200 characters
Why this is correct
The text splitter ensures chunks do not exceed chunk_size and overlap by chunk_overlap characters to maintain context.
- ✗
Chunks are at most 1200 characters, overlapping by 200
Why it's wrong here
chunk_overlap is included within the chunk_size limit; total chunk length does not exceed chunk_size.
- ✗
Chunks are exactly 800 characters, with no overlap
Why it's wrong here
No — chunk_size is the upper limit, and overlap is specified as 200.
- ✗
Each chunk is exactly 1000 characters, with no overlap
Why it's wrong here
chunk_size is a maximum, not exact; overlap is 200 characters, not zero.
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