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Only the ______ geospatial index supports the $polygon operator.

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+1 vote
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in MongoDB by (131k points)
Only the ______ geospatial index supports the $polygon operator.

(a) 1dsphere

(b) 2d

(c) 3d

(d) None of the mentioned

The question was posed to me during an internship interview.

The above asked question is from Indexing Methods in chapter Index/Indexing Concepts of MongoDB

1 Answer

+2 votes
by (652k points)
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Best answer
Right answer is (b) 2d

Best explanation: The $polygon operator calculates distances using flat (planar) geometry.

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