Which two software components are central to providing the performance benefits delivered by an
Exalogic machine?
A.
WebLogic Server
B.
Coherence
C.
SOA Suite
D.
Oracle Database
E.
Oracle VM
Explanation:
Coherence provides replicated and distributed (partitioned) data management and
caching services on top of a reliable, highly scalable peer-to-peer clustering protocol. Coherence
has no single points of failure; it automatically and transparently fails over and redistributes its
clustered data management services when a server becomes inoperative or is disconnected from
the network. When a new server is added, or when a failed server is restarted, it automatically
joins the cluster and Coherence fails back services to it, transparently redistributing the cluster
load. Coherence includes network-level fault tolerance features and transparent soft re-start
capability to enable servers to self-heal.