1.

The ___________ provides information for various lock types and lock modes held during the operation.(a) admin.system.authlocks(b) system.profile.locks(c) admin.system.locks(d) all of the mentioned

Answer» Right answer is (b) system.profile.locks

Explanation: MongoDB uses reader-writer locks that allow concurrent readers shared access to a resource, such as a database or collection, but give exclusive access to a single write operation.


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