Ann, the system administrator, is installing an extremely critical system that can support ZERO downtime.
Which of the following BEST describes the type of system Ann is installing?

A.
High availability

B.
Clustered

C.
RAID

D.
Load balanced

Explanation:
High Availability is he term used to refer to a system that has been secured and set up/configured in such
a way so as to be online, active and able to respond and thus have zero downtime as a result.
Incorrect Answers:
B: Clustered means that a system is deployed in such a way so as to share the workload of a mission
critical application.
C: RAID refers to a redundant array of independent disks so as to provide high-availability in case of disk
failure.
D: Load Balanced means that the system would be deployed in such a way as to spread the network
traffic load that it has to handle.

Stewart, James Michael, CompTIA Security+ Review Guide, Sybex, Indianapolis, 2014, pp. 140, 143