Explanation:
Before restore of data files, you need to take these data files offline. After that you can issue the RESTORE command. Than copy data files to the new location using an operating system tool and after that issue the SWITCH command to activate restored versions of data files.
Incorrect Answers:
1: You can use the SWITCH command as last step of restore/recovery of the data files.
2: You need first to take offline the data files that you need to restore and only after that issue the RESTORE command.
4: Copying the data files is not first step to restore data files to a new location.
Oracle 8, DBA Certification Exam Guide, Jason S. Couchman, p. 637-641
Chapter 13: Using Recovery Manager for Backups

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