CCTV CCTV Power and Cabling Infrastructure

Question 1

What does PoE stand for in the context of IP CCTV systems?

Accepted Answer

Power over Ethernet

Answer

Point of Entry

Answer

Protocol of Encryption

Answer

Port over Extension

Question 2

Which PoE standard provides up to 30W of power per port to connected devices?

Accepted Answer

IEEE 802.3at (PoE+)

Answer

IEEE 802.3af (PoE)

Answer

IEEE 802.3bt (PoE++)

Answer

IEEE 802.1Q

Question 3

What type of cable is most commonly used for analog CCTV camera installations?

Accepted Answer

RG-59 coaxial cable

Answer

Cat6 UTP

Answer

Fiber optic

Answer

RS-485 twisted pair

Question 4

What is the maximum recommended cable run length for an analog CCTV camera using RG-59 coax without amplification?

Accepted Answer

300 meters

Answer

100 meters

Answer

500 meters

Answer

750 meters

Question 5

What is the primary purpose of a UPS (Uninterruptible Power Supply) in a CCTV system?

Accepted Answer

To maintain system operation during power outages

Answer

To reduce power consumption of cameras

Answer

To regulate voltage spikes from lightning

Answer

To distribute power evenly across all cameras

Question 6

Which wiring standard is used for RS-485 communication in PTZ CCTV camera control?

Accepted Answer

Two-wire twisted pair (differential signaling)

Answer

Single-conductor coaxial

Answer

Four-conductor shielded cable

Answer

Standard Cat5 UTP with RJ45