What are two characteristics of active/active clustering? (Choose two.)

A.
clustering of up to four nodes

B.
load balancing

C.
cluster synchronization using the external port

D.
failover using a virtual IP (VIP) address

Explanation:
http://www.juniper.net/techpubs/en_US/release-independent/sa/informationproducts/pathway-pages/hardware/sa-service-hw-device.pdf (page 4, 4th bullet on the page)