Which of the following refers to a site that is operational continuously?

A site that is operational continuously is referred to as a hot site. This type of site is fully equipped and can take over business operations immediately or within a very short time frame in the event of a disaster at the primary location. Hot sites maintain real-time data replication or have up-to-date backups and infrastructure, ensuring that business services remain uninterrupted.

In contrast, a cold site is a backup location that is not set up with the necessary systems or data required for immediate operational capacity, and would require significant time and resources to become functional. A warm site offers a middle ground, as it is partially equipped and can be operational relatively quickly, but it still lacks the immediate readiness and full capabilities of a hot site. A standby site often suggests that it can be activated if needed, but it does not emphasize continuous operation or immediate availability like a hot site does.