When UNDROP is blocked due to a name collision, what operation enables restoring the previous version?

• A. Rename the existing object
• B. Drop the conflicting object
• C. Create a new object with a different name
• D. Clear the cache

Answer: (A)

UNDROP must recreate the dropped object using its original name, so that name must be free. When something already exists with that name, the restore is blocked. Renaming the existing object to a different name frees up the original name, allowing UNDROP to reconstruct the previously dropped object under that name. After the restore, you can rename things again if needed. Dropping the conflicting object would remove it entirely, not just let UNDROP proceed; creating a new object with a different name doesn’t free up the original name; clearing the cache has no effect on object metadata or UNDROP.