Your company plans to implement a wireless core feature set using autonomous access points. When choosing the access points, what is required for the customer to implement WDS?

A.
WDS must be enabled on all APs in the WLAN.

B.
Client cards must be using Cisco’s LEAP authentication.

C.
The customer must have a WLSM blade in their Cisco Catalyst 6000.

D.
All APs must support 802.1X for registration with WDS.

Explanation:
WDS is the protocol that controls devices and facilitates CCKM and fast but secure roaming. A WLAN Control Domain is WDS plus infrastructure wireless APs registered with the WDS server or primary device, plus of course registered wireless clients.
Wireless infrastructure devices register with the WDS using 802.1X (LEAP or EAP-FAST).
The WDS device helps scale management traffic by collecting and aggregating radio management (RM) data within its WLAN Control Domain. Clients can roam seamlessly within a WLAN Control Domain.
Layer 3 roaming can cross VLAN or router boundaries, whereas the L2 roaming is limited to the scope of a VLAN.
L2 roaming can be seen in the wireless domain on the left side of the topology, and L3 roaming can be seen on the right side of the topology.