Delayed members apply operations from the _______ on a delay.
A. oplog
B. log
C. mlog
D. none of the mentioned
I had been asked this question at a job interview.
My query is from Master Slave Replication in section Replication Concepts, Processes and Replication Set of MongoDB
The correct answer is A. oplog
Explanation: Always prevent applications from seeing and querying delayed members.