Which two features are advantages of deploying a cluster over WAN? (Choose two.)
![PrepAway - Latest Free Exam Questions & Answers](https://www.briefmenow.org/img/pa5.jpg)
A.
scalability up to 20 sites, if there is sufficient IP WAN bandwidth
B.
failover to co-resident Cisco Unified CallManager Express platforms
C.
extension mobility within the cluster
D.
shared line appearances
E.
centralized DSP resources