Which three statements are true about WebLogic clusters?

Which three statements are true about WebLogic clusters?

A.
Clusters provide clients with transparent failover.

B.
EJB applications can be targeted to an entire cluster.

C.
All cluster members must bind to the same port number.

D.
Cluster members replicate application data by using heartbeats.

E.
Cluster members can be associated with one or more domains.

F.
Web applications require a proxy in order to be used in a cluster.

Explanation:
A: If an object is clustered, failover and load balancing for that object is available.
In a WebLogic Server cluster, application processing can continue when a server instance fails.
You “cluster” application components by deploying them on multiple server instances in the
cluster—so, if a server instance on which a component is running fails, another server instance on
which that component is deployed can continue application processing.
The choice to cluster WebLogic Server instances is transparent to application developers and
clients.
B: A clustered application or application component is one that is available on multiple WebLogic
Server instances in a cluster. If an object is clustered, failover and load balancing for that object is
available. Deploy objects homogeneously—to every server instance in your cluster—to simplify
cluster administration, maintenance, and troubleshooting.

Web applications can consist of different types of objects, including Enterprise Java Beans (EJBs),
servlets, and Java Server Pages (JSPs).
Note: Load balancing and failover for EJBs and RMI objects is handled using replica-aware stubs,
which can locate instances of the object throughout the cluster.
C: Cluster Multicast Address and Port
Identify the address and port you will dedicate to multicast communications for your cluster.
Reference: Using WebLogic Server Clusters, Understanding WebLogic Server Clustering