Explanation:If clients configure the read preference to permit secondary reads, read operations can return data from secondary members that have not replicated more recent write operations. 6. ________ unlocks a mongod instance to allow writes and reverses the operation of a db.fsyncLock() operation.
A. db.fsyncUnlock()
B. db.fsynclock()
C. db.syncUnlock()
D. Secondary
Answer:A
Explanation:If clients configure the read preference to permit secondary reads, read operations can return data from secondary members that have not replicated more recent write operations. 6. ________ unlocks a mongod instance to allow writes and reverses the operation of a db.fsyncLock() operation.
A. db.fsyncUnlock() B. db.fsynclock() C. db.syncUnlock() D. Secondary
Explanation:Typically you will use db.fsyncUnlock() following a database backup operation. 7. Delayed members are a ________ or a running “historical” snapshot of the data set