CCTV Video Recording and Storage Questions and Answers

Question 1

A financial institution requires a video storage solution for its 64-camera system that prioritizes high data redundancy and can withstand the failure of up to two hard drives simultaneously without any data loss.
Which RAID level best meets this requirement?

Accepted Answer

RAID 6

Answer

RAID 5

Answer

RAID 10

Answer

RAID 1

Question 2

What is the fundamental difference in how a Digital Video Recorder (DVR) and a Network Video Recorder (NVR) handle the video encoding process?

Accepted Answer

A DVR encodes video at the recorder, while an NVR receives an already encoded stream from the IP camera.

Answer

An NVR requires coaxial cable for video input, while a DVR uses network cables.

Answer

DVRs can only record in standard definition, while NVRs are exclusively for high-definition video.

Answer

NVRs store video data on the network, while DVRs only store it on internal hard drives.

Question 3

A security manager wants to significantly increase the video retention period for a 16-camera system without purchasing additional hard drives. The monitored areas are mostly inactive overnight. Which change in recording configuration would be most effective?

Accepted Answer

Switching from continuous recording to motion-based recording.

Answer

Increasing the video resolution from 1080p to 4K.

Answer

Changing the compression from H.265 to H.264.

Answer

Increasing the frame rate from 15 fps to 30 fps.

Question 4

When configuring an IP camera for a scene with highly variable activity, such as a quiet office lobby that becomes crowded during lunch, which bitrate setting most efficiently maintains image quality while optimizing storage?

Accepted Answer

Variable Bitrate (VBR)

Answer

Constant Bitrate (CBR)

Answer

Fixed Frame Rate (FFR)

Answer

Maximum Bitrate (MBR)

Question 5

A critical infrastructure site uses a Video Management System (VMS) with a primary recording server. To comply with regulations, video recording must continue uninterrupted even if this primary server experiences a complete hardware failure. Which feature is designed for this level of recording redundancy?

Accepted Answer

Failover Recording Server

Answer

RAID 5 Array

Answer

Edge Storage on Cameras

Answer

Redundant Power Supplies

Question 6

Which of the following is the LEAST critical factor when an organization defines its video surveillance retention policy?

Accepted Answer

The brand of the hard drives used for storage.

Answer

The total available storage capacity.

Answer

Applicable industry or legal requirements.

Answer

The average time required to investigate an incident.