CCTV Network and IP Video 5

Question 1

What is 'edge analytics' in the context of IP cameras?

Accepted Answer

Running video analytics such as motion detection or object recognition directly on the camera's processor

Answer

Edge analytics means the camera's onboard processor runs AI or analytical algorithms locally, reducing bandwidth and server load.

Question 2

Which IP addressing scheme is recommended for IP cameras to prevent address conflicts and dropouts?

Accepted Answer

Static IP addressing or DHCP reservations

Answer

Static IPs or DHCP reservations (binding MAC to a fixed IP) prevent cameras from changing addresses after a reboot or lease expiration.

Question 3

In H.264 video, what is an 'I-frame'?

Accepted Answer

A fully encoded reference frame containing complete image data

Answer

An I-frame (Intra-coded frame) is a self-contained full image that other frame types reference; it enables random-access playback.

Question 4

What does RTCP (Real-Time Control Protocol) provide in an IP video streaming system?

Accepted Answer

Carries control and QoS feedback information alongside an RTP media stream

Answer

RTCP works alongside RTP to deliver control information, including packet loss statistics and jitter measurements, enabling QoS monitoring.

Question 5

Which factor most directly determines how many IP cameras can share a single network switch port via a PoE splitter daisy-chain?

Accepted Answer

The total PoE wattage budget of the switch port

Answer

Each PoE port has a maximum watt output; the total power draw of all daisy-chained cameras cannot exceed that port's wattage budget.

CCTV - Closed Circuit Television Practice Test