Explanation: Without indexes, MongoDB must perform a collection scan. 3. MongoDB supports the creation of user-defined ascending/descending indexes on a ______ field of a document.
A. Single
B. Non Unique
C. Compound
D. None of the mentioned
Answer:A
Explanation: Without indexes, MongoDB must perform a collection scan. 3. MongoDB supports the creation of user-defined ascending/descending indexes on a ______ field of a document.
A. Single B. Non Unique C. Compound D. None of the mentioned