Explanation:A rollback reverts write operations on a former primary when the member rejoins its replica set after a failover. 5. Point out the correct statement :
A. A rollback does not occur if the write operations replicate to another member of the replica set before the primary steps down
B. Secondaries that can not keep up with the throughput of operations on the former primary, decrease the size and impact of the rollback
C. Fault tolerance is an effect of replica set size, but the relationship is not direct
D. None of the mentioned
Answer:A
Explanation:A rollback reverts write operations on a former primary when the member rejoins its replica set after a failover. 5. Point out the correct statement :
A. A rollback does not occur if the write operations replicate to another member of the replica set before the primary steps down B. Secondaries that can not keep up with the throughput of operations on the former primary, decrease the size and impact of the rollback C. Fault tolerance is an effect of replica set size, but the relationship is not direct D. None of the mentioned
Explanation:When a rollback does occur, administrators must decide whether to apply or ignore the rollback data. 6. MongoDB writes the rollback data to BSON files in the rollback/ folder under the database’s ________ directory.