You network contains an Active Directory domain. The domain contains two DNS servers named Server1 and Server2.
Server1 has a DNS zone named contoso.com that has the following configurations:
* Dynamic updates: Secure only
* Scavenge stale resource records: Enabled
* Scavenging period: 1 day
* No-refresh interval: 3 days
* Refresh interval: 7 days
After how many days will a dynamic record become stale if the timestamp is NOT updated?