Your network contains two standalone servers named Server1 and Server2 that have Active
Directory Lightweight Directory Services (AD LDS) installed.
Server1 has an AD LDS instance.
You need to ensure that you can replicate the instance from Server1 to Server2.
What should you do on both servers?

A.
Obtain a server certificate.

B.
Import the MS-User.ldf file.

C.
Create a service user account for AD LDS.

D.
Register the service location (SRV) resource records.

Explanation:
http://technet.microsoft.com/en-us/library/cc794857%28v=ws.10%29.aspx
Administering AD LDS Instances

Each AD LDS instance runs as an independent—and separately administered—service on a
computer. You can configure the account under which an AD LDS instance runs, stop and
restart an AD LDS instance, and change the AD LDS instance service display name and
service description. In addition, you can enable Secure Sockets Layer (SSL) connections in
AD LDS by installing certificates. In Active Directory environments, each AD LDS instance
attempts to create a Service Principal Name (SPN) object in the directory to be used for
replication authentication. Depending on the network environment into which you install AD
LDS, you may have to create SPNs manually.
AD LDS service account
The service account that an AD LDS instance uses determines the access that the AD LDS
instance has on the local computer and on other computers in the network. AD LDS
instances also use the service account to authenticate other AD LDS instances in their
configuration set, to ensure replication security. You determine the AD LDS service account
during AD LDS installation.