1.

Point out the correct statement.(a) With the MMAPv1 storage engine, MongoDB preallocates its database files before using them and often creates large files(b) zlib provides better compression rate but has a higher performance cost(c) MongoDB includes support for many storage engines(d) All of the mentioned

Answer» The correct choice is (b) zlib provides better compression rate but has a higher performance cost

Easy explanation: WiredTiger uses prefix compression on all indexes by default.


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