Norton backup - new user questions

Getting back to using Norton backup after a number of years using Windows File History - curious about a few things (apologies for lumping these into one post - if I need deep diving on any particular I'll setup a new thread).

  1. After the backup set is run I can see the backup completion status and list of files via View Recent History, is there any way to determine a count of files (count / total size) so I can use that as a sanity check that no files got missed or skipped over for some reason?  It's a bit messy trying to get the count from the list shown there...
  2. Does Norton Backup support keeping multiple versions of a file?  Note that I'm backing up to a local external drive as opposed to Cloud (but may look at Cloud later).
  3. If I later need to access files from a Norton Backup, but no longer have the software (a few years later I come across a backup I did and want some of the files), is there a way to do that or it's basically lost data?
  4. Regarding Cloud backup, my thoughts are to have a full backup to my external drive, and incremental ones to the Cloud service (which has far less space available) - I would store the external drive at an offsite location so that overall my data is safe.  I notice when I backup to the external drive that each time it's just backing up changed / new files as compared to the previous backup.  Would it do the same if my first backup was using one backup set to a local ext drive, and subsequent ones with a different backup to the Cloud service (set to run every so often)?

Thanks for any tips!

Cheers

James