Network and IP Video Flashcards

What is the purpose of Quality of Service (QoS) settings on a network switch used in an IP camera system?

Answer: Prioritize video traffic to prevent packet loss and latency

QoS prioritizes video traffic in the network queue, reducing dropped packets and jitter that degrade live and recorded video quality.

An IP camera is configured with a static IP of 192.168.1.50 but the NVR subnet is 10.0.0.0/24. What is the most likely result?

Answer: The camera will not be discoverable by the NVR without routing

Devices on different subnets cannot communicate directly without a router, so the camera will be unreachable from the NVR.

Which H.264 profile provides the best compression efficiency with widest device compatibility for IP surveillance?

Answer: High Profile

High Profile offers the best compression efficiency in H.264, reducing storage and bandwidth needs while maintaining quality.

What distinguishes unicast streaming from multicast streaming in an IP camera system?

Answer: Both A and C are correct

Unicast creates separate streams for each client, consuming more bandwidth as viewers increase, while multicast sends a single stream that multiple clients join.

What is the recommended maximum cable run for Cat6 Ethernet in an IP camera installation without a repeater?

Answer: 100 meters

IEEE 802.3 specifies a maximum segment length of 100 meters (328 feet) for Cat5e/Cat6 Ethernet.

Which method allows an installer to discover ONVIF-compliant IP cameras on a local network without knowing their IP addresses?

Answer: WS-Discovery

WS-Discovery is the ONVIF-specified mechanism that allows devices to announce themselves and be found on a local network.

A 4MP IP camera streams at 15 fps using H.265. Compared to using H.264 at the same resolution and frame rate, storage requirements will typically be:

Answer: About 50% lower

H.265 (HEVC) achieves approximately 50% better compression than H.264 at equivalent quality, cutting storage requirements roughly in half.