Which of the following is a Huawei campus security case

The rail transit safety monitoring equipment layer is mainly divided into (), access control

From the perspective of the trend of safe city construction, the scale of front-end camera construction is increasing, and the proportion of smart cameras is rising. The construction scale of some third- and fourth-tier and county-level safe cities has reached more than 10,000.

The NTP source server is a server that provides a clock source. Other servers in the network synchronize time with the clock source server, and the VCN obtains the time from the clock source.

What does not belong to Huawei's lightweight cloud product form is