Explanation:To use the $box operator, you must specify the bottom left and top right corners of the rectangle in an array object. 5. Point out the correct statement :
A. Applications can use $center without having a geospatial index
B. Before 3.0, a geospatial index must exist on a field holding coordinates before using any of the geospatial query operators
C. To use $centerSphere, specify an array that contains grid coordinates of the circle’s center point
D. None of the mentioned
Answer:A
Explanation:To use the $box operator, you must specify the bottom left and top right corners of the rectangle in an array object. 5. Point out the correct statement :
A. Applications can use $center without having a geospatial index B. Before 3.0, a geospatial index must exist on a field holding coordinates before using any of the geospatial query operators C. To use $centerSphere, specify an array that contains grid coordinates of the circle’s center point D. None of the mentioned
Explanation:However, geospatial indexes support much faster queries than the unindexed equivalents. 6. Applications can use _________ without having a geospatial index.