Explanation: The MongoDB distribution for Solaris does not include support for the WiredTiger storage engine. 6. MongoDB uses ________ logging to an on-disk journal.
A. write ahead
B. read ahead
C. write once
D. read only
Answer:A
Explanation: The MongoDB distribution for Solaris does not include support for the WiredTiger storage engine. 6. MongoDB uses ________ logging to an on-disk journal.
A. write ahead B. read ahead C. write once D. read only
Explanation:Leave journaling enabled in order to ensure that mongod will be able to recover its data files and keep the data files in a valid state following a crash. 7. _______ concern describes the guarantee that MongoDB provides when reporting on the success of a write operation.