Explanation:The sh._lastMigration() method returns a document with details about the last migration performed on the database or collection. 7. _________ removes an association between a range shard keys and a shard tag.
A. sh.removeTagRange()
B. sh._checkMongos()
C. sh.disableBalancing()
D. None of the mentioned
Answer:A
Explanation:The sh._lastMigration() method returns a document with details about the last migration performed on the database or collection. 7. _________ removes an association between a range shard keys and a shard tag.
A. sh.removeTagRange() B. sh._checkMongos() C. sh.disableBalancing() D. None of the mentioned
Explanation:Use sh.removeShardTag() to ensure that unused or out of date ranges are removed and hence chunks are balanced as required. 8. _________ disable balancing on a single collection in a sharded database.