With the _______ storage engine, MongoDB uses memory-mapped files to store data.
A. MMAPv2
B. MMAPv1
C. WiredTiger
D. All of the mentioned
Answer:A
With the _______ storage engine, MongoDB uses memory-mapped files to store data.
A. MMAPv2 B. MMAPv1 C. WiredTiger D. All of the mentioned
Explanation: Given a data set of sufficient size, the mongod process will allocate all available memory on the system for its use. 2. Point out the correct statement :