HOTSPOT
Your network contains an Active Directory domain named contoso.com. All servers are
located in the same Active Directory site. The domain contains two domain controllers
named DC1 and DC2. Both domain controllers host an Active Directory-integrated zone for
contoso.com.
The Start of Authority (SOA) record of the contoso.com zone is shown in the exhibit. (Click
the Exhibit button.)
You have a member server named Server1. Server1 hosts a secondary zone of
contoso.com.
On DC1, you add a new record to the contoso.com zone.
In the table below, identify the maximum amount of time required to replicate the record to
each server. Make only one selection in each column.
Answer: 
Explanation:
Note:
* If you use Active Directory integrated DNS when you configure a domain controller as a
DNS name server, zone data is stored as an Active Directory object and is replicated as part
of domain replication.* Most of the Domain Name System (DNS) zone settings that you can change control how
the zone is transferred between primary and secondary servers.
* Refresh interval
/Refresh interval – it is use to regulate the secondary DNS server at what interval the
secondary DNS server can request a copy of the zone transfer.
/The refresh interval, which is how often the zone is transferred
/ The time, in seconds, that a secondary DNS server waits before querying its source for the
zone to attempt renewal of the zone. When the refresh interval expires, the secondary DNS
server requests a copy of the current SOA record for the zone from its source, which
answers this request. The secondary DNS server then compares the serial number of the
source server’s current SOA record (as indicated in the response) with the serial number in
its own local SOA record. If they are different, the secondary DNS server requests a zone
transfer from the primary DNS server.