The upper-level area views the camera images of the lower-level area. Since the video has been stored in the lower-level area, there is no need to repeat storage in the upper-level area. Which of the following video networking features can be used to achieve?

The upper-level area views the camera images of the lower-level area. Since the video has been stored in the lower-level area, there is no need to repeat storage in the upper-level area. Which of the following video networking features can be used to achieve?
A . Front-end multi-machine collaboration
B . Video forwarding
C . Cloud Edge Collaboration
D . NAT

Answer: B