Explanation:
It’s possible to rebuild reverse key, function-based, key-compressed indexes on regular tables and on IOT (including secondary indexes).
Incorrect Answers:
1: Oracle9i does not currently support online index rebuilding for bitmap or partitioned local and global indexes.
Reference:
OCP Oracle9i Database: New Features for Administrators, Daniel Benjamin, p. 74-83
Chapter 2: Availability Enhancements
Oracle 9i New Features, Robert Freeman, p. 46-53
Chapter 2: Oracle9i Architecture Changes

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