Your network contains an Active Directory domain named contoso.com. The domain contains two
servers named Server1 and Server2. Both servers run Windows Server 2012 R2. Both servers have
the File and Storage Services server role, the DFS Namespaces role service, and the DFS Replication
role service installed.
Server1 and Server2 are part of a Distributed File System (DFS) Replication group named Group1.
Server1 and Server2 are separated by a low-speed WAN connection.
You need to limit the amount of bandwidth that DFS can use to replicate between Server1 and
Server2.
What should you modify?

A.
The referral ordering of the namespace

B.
The staging quota of the replicated folder

C.
The cache duration of the namespace

D.
The schedule of the replication group

Explanation:
Scheduling allows less bandwidth the by limiting the time interval of the replication
Does DFS Replication throttle bandwidth per schedule, per server, or per connection?

If you configure bandwidth throttling when specifying the schedule, all connections for that
replication group will use that setting for bandwidth throttling. Bandwidth throttling can be also set
as a connection-level setting using DFS Management.
To edit the schedule and bandwidth for a specific connection, use the following steps:
In the console tree under the Replication node, select the appropriate replication group.
Click the Connections tab, right-click the connection that you want to edit, and then click
Properties.
Click the Schedule tab, select Custom connection schedule and then click Edit Schedule.
Use the Edit Schedule dialog box to control when replication occurs, as well as the maximum
amount of bandwidth replication can consume.