What is the maximum size of a MongoDB document

The correct answer is A. 16 MB. MongoDB enforces a hard limit of 16 MB per document, a deliberate design choice to prevent single documents from consuming excessive memory during query processing. Options B (12 MB) and C (2 MB) are simply incorrect values that don't correspond to any MongoDB limit. Option D is

MongoDB Fundamentals

Question

Options

A16 MB
B12 MB
C2 MB
DThere is no maximum size. It depends on the RAM.

How the community answered

(35 responses)

A
89% (31)
B
6% (2)
C
3% (1)
D
3% (1)

Explanation

MongoDB enforces a hard limit of 16 MB per document, a deliberate design choice to prevent single documents from consuming excessive memory during query processing. Options B (12 MB) and C (2 MB) are simply incorrect values that don't correspond to any MongoDB limit. Option D is a common misconception - MongoDB's document size limit is a fixed constant in the engine, not a runtime constraint tied to available RAM.

Memory tip: Think "16 MB = 16 megabytes = MongoDB's max" - the M in MB can remind you of MongoDB, and 16 is the only power of 2 that maps to this limit.

Topics

#document size limit#BSON#16MB limit

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