The incorrect statement is D . The domain interconnection capability is described in a one-way supervisory model in which the upper-level domain can consume resources and services provided by the lower-level domain . The material explicitly states that “Users in the upper-level domain can view the alarms reported by the lower-level domain” , “Users in the upper-level domain can set recording plans for cameras in the lower-level domain” , and “Users in the upper-level domain can view live video and recordings … from all cameras in the lower-level domain. In addition, the users can perform PTZ controls over all cameras in the lower-level domain” . These statements directly validate A, B, and C .

The backup direction also confirms why D is wrong. The material states that “Users in the upper-level domain can use the live video and recording backup function to back up recordings of a lower-level domain to MPUs of the local domain, domains of the same level, and upper-level domain” . That means the supported backup flow is from the lower-level domain upward or laterally, not from the upper-level domain down to a lower-level domain. Therefore, D is the incorrect statement.