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

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Answer: B