Point out the wrong statement :
A. When a query does not include a shard key, the mongos can use cluster metadata from the config database to route the queries to shards
B. On larger clusters, scatter gather queries are unfeasible for routine operations
C. Replica sets use read preferences to determine where and how to route read operations to members of the replica set
D. None of the mwntioned
Answer:A
Point out the wrong statement :
A. When a query does not include a shard key, the mongos can use cluster metadata from the config database to route the queries to shards B. On larger clusters, scatter gather queries are unfeasible for routine operations C. Replica sets use read preferences to determine where and how to route read operations to members of the replica set D. None of the mwntioned