Correct Answer: A
Explanation/Reference:
Explanation:
A server cluster is a group of independent servers, which are managed as a single system that provides higher availability, easier manageability, and greater scalability.
The cluster looks like a single server from the user's point of view. If any server in the cluster crashes, processing continues transparently.
Incorrect Answers:
B: A server cluster looks like a single server, not a dual server from the user's point of view.
C: A server cluster looks like a single server, not a triple server from the user's point of view.
D: A server cluster looks like a single server, not a quadruple server from the user's point of view.
References:
Krutz, Ronald L. and Russell Dean Vines, The CISSP Prep Guide: Mastering the CISSP and ISSEP Exams, 2nd Edition, Wiley Publishing, Indianapolis, 2004, p. 145