Final answer:
The disaster recovery test that involves activating the secondary site is the Parallel test, which runs systems in parallel with the primary site without impacting live operations.
Step-by-step explanation:
The disaster recovery test that involves the actual activation of the DR site is known as the Parallel test. In a Parallel test, the disaster recovery site is activated, and systems and services are run in parallel to the main production site. This type of test allows an organization to verify that a secondary system can take over operations effectively without impacting live data or production services. While essential functions are mirrored and validated at the alternate location, the primary site still handles actual transaction processing. The test typically does not involve the redirection of live customer traffic, but is meant to simulate the process should an actual disaster necessitate a switchover to the recovery site.