Which of the following is NOT a back up method?

A. Save backup

B. System backup

C. snapshot

D. Migrate

Explanation: The built-in Gaia backup procedures:

Snapshot Management

System Backup (and System Restore)

Save/Show Configuration (and Load Configuration)

Check Point provides three different procedures for backing up (and restoring) the operating system and networking parameters on your appliances.

Snapshot (Revert)

Backup (Restore)

upgrade_export (Migrate)

Reference:
https://supportcenter.checkpoint.com/supportcenter/portal?eventSubmit_doGoviewsolutiondetails=&solutionid=sk108902
https://supportcenter.checkpoint.com/supportcenter/portal?eventSubmit_doGoviewsolutiondetails=&solutionid=sk54100