Your network contains an Active Directory domain. The domain contains DNS servers that run Windows Server 2008 R2. The network has two external links. One link connects to the Internet.
The other link directly connects to the network of a partner company. The partner companys network is not connected to the Internet. You need to ensure that users on your network can access resources on the partner companys network. The solution must ensure that the users on your network can continue to access resources on the Internet. Which two actions should you perform on the DNS servers? (Each correct answer presents a complete solution. Choose two.)
A.
Configure conditional forwarding.
B.
Add a stub zone.
C.
Modify the root hints.
D.
Add a reverse lookup zone.
E.
Add a trust anchor.
“Modify the root hints.” What for ?
A and B fits perfectly.
Stub zone is even better than cond. forwarding.
Can you explain why C is selected ?
yes A and B
I agree, A and B. If you use C and modify the root hints, you could prevent access from your company getting out to the internet.
Since your partner company doesn’t connect to the internet, it probably does not know how to resolve internet names. If their DNS servers are your root servers, and don’t know how to resolve internet names, you suddenly will no longer be able to resolve them either.
A conditional forwarder will forward all requests for their zone over to their DNS servers. A stub zone is even better because it doesn’t just forward the requests hoping for an answer, it forwards it knowing it will receive an authoritative answer for that zone.
Definitely A and B, not C.