Choose "Yes" if the tested VM is configured so that the fallback mode is activated in this test run.
Choose "No" if the tested VM is configured so that the fallback mode is either not activated or available in this test run, or if the tested VM does not support the fallback mode.
NOTE: When a tested VM supports the fallback mode, the JCK must be run at least twice. In one test run, the answer to this question must be Yes and the tested VM must be configured so that the fallback mode is activated. In the second test run the answer must be No and the tested VM must be configured so that the fallback mode is either not activated or available in the test run.
VM test setup is described in detail in the "Test-Specific Information" chapter of the Java Compatibility Kit User's Guide.