Explanation:
NOLOGGING operations affect a standby database environment, because changes in the primary database will not be written into redo logs and will not be applied to the standby database, so the affected data files needs to be copied from the primary to the standby database manually. It's better to avoid NOLOGGING operation usage in a standby database environment.
Incorrect Answers:
1: There is a difference in these two situations.
2: There is no release 0.1.
4: NOLOGGING operations can be used on the primary database only. Changes to the standby database will be applied with physical datafiles copying, not with archived redo log files applying only.
Oracle 8, DBA Certification Exam Guide, Jason S. Couchman, p. 1159
Chapter 24: Oracle8i New Features Topics

---