Which of the following is a default value for the tombstone lifetime for a new Active Directory forest?

Which of the following is a default value for the tombstone lifetime for a new Active Directory forest?

• 180 days
• 30 days
• 6 months
• 24 hours  

EXPLANATION

Tombstone lifetime is the amount of time a deleted directory object remains in storage before it is permanently deleted.  This value is unique in the forest.

For new Active Directory forests, the default Tombstone Lifetime (TSL) is 180 days.

While some may point out that the default value can be 60 days, this only is true for existing forests whose original forest root Domain Controller was created while running Windows Server 2003 R2 SP1 or earlier operating systems.  Certainly, at the time of this writing, nobody would be creating a new forest using Windows Server 2003 R2 SP1.

SOURCE

https://www.usmanghani.co/active-directory-tombstone-lifetime-value/