What is the key difference between a DVR and an NVR in a CCTV system?
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A
A DVR records in color while an NVR records in black and white
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B
A DVR processes analog signals locally, while an NVR processes digital IP streams from network cameras
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C
A DVR stores footage on tapes, while an NVR uses hard drives
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D
A DVR supports PTZ cameras, while an NVR does not