Q. MongoDB generates _______ values upon document creation to produce a unique identifier for the object.

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Q. A shard key that increases monotonically will not hinder performance if most of your write operations are ____ operations.

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Q. The mongos provides an interface for applications to interact with sharded clusters that hides the complexity of data ______

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Q. The _________ process is responsible for redistributing the chunks of a sharded collection evenly among the shards for every sharded collection.

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Q. Point out the correct statement.

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Q. Use _______ migration to distribute data during bulk inserts.

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Q. The balancer process sends the _______ command to the source shard.

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Q. Point out the wrong statement.

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Q. The source shard is responsible for incoming ______ operations for the chunk.

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Q. ________ can alter the behavior so that the delete phase of the current migration blocks the start of the next chunk migration.

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Q. The default value _________ becomes true for all chunk migrations.

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Q. You can set the _________ option on the balancer configuration to set different write concern semantics.

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Q. With __________ enabled, the source shard archives the documents in the migrated chunks in a directory named after the collection namespace.

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Q. The ________ collection stores a document for each change to the metadata of a sharded collection.

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Q. Point out the correct statement.

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Q. The _________ collection stores a document for each sharded collection in the cluster.

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Q. You can return a list of the collections, with the following helper ______________

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Q. Point out the wrong statement.

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Q. ________ is a string that holds the address of the client, a mongos instance that initiates this change.

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Q. The _______ collection keeps track of the active components in the sharded cluster.

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