Explanation:
It is NOT possible to have multiple columns as the partition key of a list-partitioned table. It’s possible to specify the keyword NULL as a partition literal value for one partition of a listpartitioned table: the set of values that specifies a partition cannot be empty; it must contain at least one value.
Incorrect Answers:
1: List partitioning is supported for heap tables only. IOTs do not support this feature.
4: You cannot specify MAXVALUE. You can specify a NULL value.
Reference:
OCP Oracle9i Database: New Features for Administrators, Daniel Benjamin, p. 134-136
Chapter 3: Manageability Enhancements
Oracle 9i New Features, Robert Freeman, p. 102-107
Chapter 4: New Oracle9i Database DDS and Data-Warehouse Features

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