CCTV Video Storage & Retrieval Systems 3

Question 1

Which storage format is typically used when exporting CCTV evidence for law enforcement?

Accepted Answer

The proprietary format of the DVR/NVR with its player software

Answer

A lossy compressed format such as MP3

Answer

An unreadable raw binary dump

Answer

A still image sequence only

Question 2

What is the recommended action when a DVR hard drive shows SMART error warnings?

Accepted Answer

Replace the drive immediately and restore from backup

Answer

Ignore the warnings until the drive fully fails

Answer

Increase the recording bitrate to compensate

Answer

Switch to motion-only recording to extend drive life

Question 3

Variable Bit Rate (VBR) recording is preferred over Constant Bit Rate (CBR) in many CCTV systems because:

Accepted Answer

VBR reduces storage consumption during low-activity periods while maintaining quality during high-activity periods

Answer

VBR always records at maximum quality regardless of motion

Answer

CBR cannot record color video

Answer

VBR eliminates the need for any compression

Question 4

What is 'chain of custody' in the context of CCTV video evidence?

Accepted Answer

A documented record of who accessed, handled, or transferred evidence and when

Answer

The cable management system for camera wiring

Answer

The sequential order in which cameras are displayed on a monitor

Answer

A log of camera maintenance dates

Question 5

Motion-triggered recording differs from continuous recording primarily in that it:

Accepted Answer

Only records footage when movement is detected, reducing storage consumption

Answer

Uses more storage space than continuous recording

Answer

Requires higher resolution cameras

Answer

Cannot be combined with scheduled recording

Question 6

When a CCTV system uses scheduled recording, it means the system:

Accepted Answer

Records only during pre-defined time windows, such as business hours or overnight

Answer

Records at a random interval decided by the manufacturer

Answer

Only records when an operator is present at the console

Answer

Records continuously at the lowest possible quality

Question 7

Which of the following best describes 'storage redundancy' in a CCTV system?

Accepted Answer

Storing the same footage on multiple media or locations to prevent total data loss

Answer

Recording the same camera twice on two separate channels

Answer

Using two monitors to display the same camera feed

Answer

Installing two cameras to cover the same field of view