Which three statements define a cluster?
A.
is a group of independent, but interconnected computers that act as a single system
B.
can be deployed to increase availability and performance
C.
can be deployed to balance a dynamically changing workload
D.
should appear to an application as multiple servers
Explanation:
Oracle Real Application Clusters
Computer cluster
A is right. individual servers but inter-connected via network and storage
B is right. cluster is for HA and increasing performance capability
C is right. load balanced among nodes
D is wrong. it appears to application as ONE system
So A.B.C. are correct