OCMJEA JEE6 P1 tutorial question 10: improving availability
10: You have been tasked with improving the availability of an existing three tier application.
What is your first stop in evaluating what changes should be made to the architecture to achieve
A. Monitor network traffic between tiers.
B. Separate presentation from business logic.
C. Identify and document all single points of failure.
D. Cluster the presentation tier without session replication.
Re: OCMJEA JEE6 P1 tutorial question 10: improving availability
It cannot be B as it is already a 3-tier application.
It cannot be C as single point failures are for 1-tier architecture.
It cannot be A as monitoring and improving network traffic will not improve availability.
That leaves D. Clustering improves availability.
Anyone disputes the explanation? Please explain..