Correct Answer : cursor: { batchSize: }
Explanation : A batchSize of 0 means an empty first batch and is useful for quickly returning a cursor or failure message without doing significant server-side work.
Correct Answer : sh.disableBalancing()
Explanation : sh.disableBalancing() does not affect balancing of other collections in a sharded cluster.
Correct Answer : sh.getBalancerHost()
Explanation : sh.enableSharding() enables sharding on a specific database.
Correct Answer : sh.getBalancerState()
Explanation : sh.getBalancerState() returns true when the balancer is enabled and false if the balancer is disabled.