You are the network administrator for A.Datum Corporation.The company uses the adatum.com namespace for its internal network.
The company network consists of two networks that are connected by a WAN link.The 10.9.9.0 network uses the 9.9.0/24 address.The 10.9.8.0 network uses the 10.9.8.0/24 address.
The relevant portion of the network is shown in the exhibit.
The network contains the DNS servers that are configured as shown in the following table.
In the 10.9.9.0/24 network, a server named Server1 frequently needs to resolve names in the adatum.com namespace and on the Internet.You need to configure the TCP/IP properties of Server1 to use the most efficient server as its preferred DNS server.
The number of hops required to resolve any name must be kept to a minimum.You also need to minimize the amount of network traffic that is caused by name resolution.
On Server1, which DNS server should you configure as the preferred DNS server?
Exhibit:
A.
DNS1
B.
DNS2
C.
DNS3
D.
131.107.5.1