**In this Video: **

• We will describe Stub Zones
• We will consider the differences between a conditional forwarder, a delegation and a stub zone.
• We will describe a scenario in which stub zones could be used in your organization.
• At the completion of this lecture, you will know how to use stub zones in your lab or your organization.

What is a Stub Zone? How are stub zones different from conditional forwarders or delegations?

Describe a Stub Zone

• A stub zone is a pointer, that points to another DNS server (we will call this server the target server).
• A stub zone is unique in that it can dynamically update itself.
• If things change (at the target domain) if DNS servers are added removed. Stub Zones know about those changes where delegations or conditional forwarders would have to be manually changed.
• A stub zone is a forward lookup zone. A stub zone only requires the SOA and the NS records from the other DNS server (or the target), which are normally publicly available.
• Stub zones are useful in that they are dynamically configured and basically can take care of themselves.

Describe Conditional Forwarders and Delegations

• Delegations and conditional forwarder are configured to point to other servers as well.
• When a conditional forwarder or a delegation is configured, a single server is used to resolve names. If that server (the target) goes down the clients won’t be able to get to the data that they require.
• Delegations and conditional forwarders are useful if there are no future changes made at the target domain.

**LAB Prerequisites: **

• Setup Three Windows 2016 Servers
• Two of those servers should be “stand alone” domains (completely separated) I used hq.com and uss.com.
• For the domain uss.com install Active Directory on SVR-US, On SVR-DNS1 install DNS.…