Explanation:Use primaryPreferred if you want an application to read from the primary under normal circumstances. 8. Read preference modes are also available to clients connecting to a sharded cluster through :
A. MMS
B. mongos
C. mongod
D. None of the mentioned
Answer:A
Explanation:Use primaryPreferred if you want an application to read from the primary under normal circumstances. 8. Read preference modes are also available to clients connecting to a sharded cluster through :
A. MMS B. mongos C. mongod D. None of the mentioned
Explanation:The mongos instance obeys specified read preferences when connecting to the replica set that provides each shard in the cluster.