Question

With MongoDB 3.0.0, the default use of the Power of _________ Allocations minimizes the occurrences of re-allocations as well as allows for the effective reuse of the freed record space.

(a) 2 Sized

(b) 3 Sized

(c) 4 Sized

(d) 5 Sized

The question was posed to me by my school teacher while I was bunking the class.

My question is from Data Modeling Introduction topic in portion Data Models of MongoDB

Answer 1

Right answer is (a) 2 Sized

Explanation: When using MMAPv1, if your applications require updates that will frequently cause document growth to exceeds the current power of 2 allocation, you may want to refactor your data model to use references between data in distinct documents rather than a denormalized data model.