The correct answer is A and D because these are the two Time Machine options that are available when creating a database clone in NDB. Point in time allows the user to specify a date and time to create a clone from a specific point in the database history. Snapshot allows the user to select a previously taken snapshot to create a clone from a consistent state of the database. Option B is incorrect because Restore point is not a Time Machine option, but a feature that allows the user to restore a source database to a previous point in time. Option C is incorrect because Backup is not a Time Machine option, but a feature that allows the user to backup a database to a remote location.
References: The following sources provide more information about the Time Machine options and cloning features in NDB:
Nutanix Database Management & Automation (NDMA) course, Module 4: Protecting Databases Using Time Machine, Lesson 4.2: Cloning Databases
Nutanix Certified Professional - Database Automation (NCP-DB) v6.5, Knowledge Objectives, Section 5 - Protect NDB-managed Databases Using Time Machine
Nutanix Database Service (NDB) User Guide, Chapter 6: Protecting Databases Using Time Machine, Section 6.2: Cloning Databases
[Nutanix Support & Insights], NDB Time Machine Under the Hood
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