Q. Sometimes the failover process may require a ____________ during operation.

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Q. Point out the correct statement.

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Q. MongoDB writes the rollback data to BSON files in the rollback/ folder under the database’s ________ directory.

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Q. The names of rollback files have the following form.

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Q. _________ is used to read the contents of the rollback files.

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Q. Use ______ to apply the changes to the new primary after rollback.

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Q. mongorestore recreates indexes recorded by _____________

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Q. The __________ of a replica set affects the outcome of failover situations.

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Q. Point out the wrong statement.

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Q. A rollback reverts _______ operations on a former primary when the member rejoins the replica set after a failover.

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Q. A priority __ member is a secondary that cannot become primary.

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Q. Point out the correct statement.

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Q. A second data center hosts one priority 0 member that cannot become ___________

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Q. A ______ member maintains a copy of the primary’s data set but is invisible to client applications.

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Q. The db.________ method does not display hidden members.

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Q. In a sharded cluster _______ do not interact with hidden members.

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Q. Which of the following members should be hidden?

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Q. Point out the wrong statement.

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Q. __________ operations cannot guarantee that the data files do not change.

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Q. _______ may block reads, including those necessary to verify authentication.

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