Certified Information Systems Security Professional (CISSP) Practice Exam

A redundant site in disaster recovery refers to a duplicate of a system that is capable of seamless operation. This site is designed to take over in case the primary site experiences a failure, ensuring minimal disruption to business operations. The key aspect of a redundant site is its ability to operate independently and take over functions without significant downtime. This capability is crucial for maintaining business continuity, as it allows for a smooth transition in case of a disaster.

The other options do not capture the significant operational continuity that a redundant site provides. An alternative site without data backup capabilities does not ensure data integrity or operational continuity during a disaster. A temporary site used during maintenance might not have the necessary infrastructure or data to replicate the primary function, and a facility used exclusively for data storage lacks the necessary operational capabilities to maintain business processes seamlessly. Hence, the correct understanding of a redundant site is its ability to serve as a fully functional duplicate, ready to take over functions effortlessly.