Question

Point out the correct statement.

(a) Elections does not occur when the primary becomes unavailable and the replica set members autonomously select a new primary

(b) A priority 1 member maintains a copy of the data set, accepts read operations, and votes in elections

(c) In a two-member replica set, in one data center hosts the primary and a secondary.

(d) None of the mentioned

I got this question in examination.

Question is from Read and Write Semantics topic in portion Replication Concepts, Processes and Replication Set of MongoDB

Answer 1

Correct choice is (a) Elections does not occur when the primary becomes unavailable and the replica set members autonomously select a new primary

To explain: Configure a priority 0 member to prevent secondaries from becoming primary, which is particularly useful in multi-data center deployments.