H12-511: HCIA-Intelligent VisionDemo

By Huawei · Question Mode

QuestionQ3

Network services and applications

Which statements correctly describe the differences between a digital video recorder (DVR) and a network video recorder (NVR)?

Choose three
  • A The number of cameras that can connect to a DVR or NVR varies depending on the DVR or NVR specifications.
  • B DVRs connect to analog cameras, and NVRs connect to network cameras.
  • C Both DVRs and NVRs store video signals.
  • D Both DVRs and NVRs need encode video signals for storage.
Explanation

DVR camera capacity and NVR camera capacity depend on the recorder model and its specifications. DVR systems conventionally use analog cameras and convert the incoming analog footage to digital form for recording and storage. NVR systems use IP cameras, which encode video at the camera; the NVR receives, records, and stores that digital footage. Thus, both types store video, but only the DVR must encode the analog input for storage.

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