CompTIA Network+ N10-006 Q72

Which of the following technologies is designed to keep systems uptime running in the event of a disaster?

A. High availability
B. Load balancing
C. Quality of service
D. Caching engines

Correct Answer: A
Section: Network security

Explanation:
If a network switch or router stops operating correctly (meaning that a network fault occurs), communication through the network could be disrupted, resulting in a network becoming unavailable to its users. Therefore, network availability, called uptime, is a major design consideration.