Explanation:
The data files and temp files directory name is set by the DB_CREATE_FILE_DEST parameter. If you use Oracle Managed Files Locations for the control files are set by the DB_CREATE_ONLINE_LOG_DEST_1 and DB_CREATE_ONLINE_LOG_DEST_2 parameters.
Incorrect Answers:
1: Control file will not be located on device /u01. One copy of the control file and the first member in each online redo log group will be on device /u02; another copy of the control file and a second member of each redo log group will be on device /u03.
2: Each redo log copy will have the first member on device /u02 and a second member will be on device /u03.
3: Online redo log files, and control file will not be on device /u01.
Reference:
OCP Oracle9i Database: New Features for Administrators, Daniel Benjamin, p. 153-160
Chapter 3: Manageability Enhancements
Oracle 9i New Features, Robert Freeman, p. 2-12
Chapter 1: Oracle9i Database Administration and Management Features

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