Q. For sharded collections, explain returns the __________ for each accessed shard.

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Q. _________ corresponds to the millis field returned by cursor.explain() in earlier versions of MongoDB.

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Q. Which of the following provides information on the MongoDB instance?

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Q. ____________ does not provide query execution information for the rejected plans.

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Q. By default, db.collection.explain() runs in ___________ verbosity mode.

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Q. ____________ returns information on the query plan for aggregate function.

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Q. Which of the operator is used to access the query field of documents within system.profile?

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Q. MongoDB reports its triggered page faults as the total number of page faults in ________ second.

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Q. You can inspect __________ to check the amount of mapped memory that mongod is using.

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Q. Point out the wrong statement.

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Q. The memory usage statuses metrics of the _________ output can provide insight into MongoDB’s memory use.

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Q. Point out the correct statement.

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Q. With the _______ storage engine, MongoDB uses memory-mapped files to store data.

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Q. MongoDB’s _______ is a database profiling system that can help identify inefficient queries and operations.

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Q. ______ field contains total number of current clients that connect to the database instance.

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Q. serverStatus includes all fields by default, except _________

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Q. The __________ data structure value provides more granular information concerning the number of operations queued because of a lock.

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Q. Point out the wrong statement.

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Q. If __________ is high relative to uptime, the database has existed in a lock state for a significant amount of time.

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Q. ________ provide the number of times the lock acquisitions encountered deadlocks.

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