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Rita Swaminathan
Asked: 2022-11-04T18:21:44+05:30 In:

Point out the wrong statement.

(a) Beginning with version 3.0, MongoDB ships with the WiredTiger storage engine

(b) Some global operations, typically short lived operations involving multiple databases, still require a global “instance-wide” lock

(c) The MMAPv1 storage engine uses collection-level locking

(d) None of the mentioned

Point out the wrong statement.

(a) Beginning with version 3.0, MongoDB ships with the WiredTiger storage engine

(b) Some global operations, typically short lived operations involving multiple databases, still require a global “instance-wide” lock

(c) The MMAPv1 storage engine uses collection-level locking

(d) None of the mentioned
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  1. The correct choice is (d) None of the mentioned

    The explanation: MongoDB operations can also yield locks between individual document modifications in write operations that affect multiple documents like update() with the multi parameter.

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