In the following question:
Which of the following is true of the mechanics of replication in MongoDB? Check all that apply.
a. Operations on the primary are recorded in a capped collection called the oplog.
b. Members of a replica set may replicate data from any other data-bearing member of the set by default.
c. Clients read from the nearest member of a replica set by default.
It says a and b are correct. But my understanding from the docs is that the Primary receives updates and stores in it’s oplog and that oplog is copied to the secondaries?