Question

__________ query calculates distances using flat (planar) geometry.

(a) $center

(b) $centre

(c) $radii

(d) Sort

I have been asked this question in an interview for internship.

This is a very interesting question from Indexing Methods in chapter Index/Indexing Concepts of MongoDB

Answer 1

The correct answer is (a) $center

For explanation: In MongoDB, sort operations can obtain the sort order by retrieving documents based on the ordering in an index.