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MongoDB · Intermediate
10 questions · Question 1 of 10
10%
Multiple Choice
Mid
Why would you use Projection Document?
A
The projection document limits the fields to return for all matching documents.
B
MongoDB keeps most recently used data in RAM.
C
Yes. Since indexes contain ordered records, MongoDB can obtain the results of a sort from an index that includes the sort fields.
D
Sharding improves concurrency by distributing collections over multiple mongod instances, allowing shard servers (i.e.
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