CCTV CCTV Network & IP Camera Configuration 2 — Questions and Answers
Question 1: What is the maximum recommended cable run for standard Cat6 Ethernet cable in a CCTV installation?
- 100 meters (328 feet) (Correct answer)
- 50 meters (164 feet)
- 200 meters (656 feet)
- 500 meters (1,640 feet)
Correct answer: 100 meters (328 feet)
The IEEE 802.3 standard limits Cat6 Ethernet runs to 100 meters to ensure signal integrity and reliable PoE delivery to IP cameras.
Question 2: What is the key function of a Network Video Recorder (NVR) in an IP CCTV system?
- To receive, decode, and store video streams from IP cameras over the network (Correct answer)
- To convert analog signals to digital
- To power cameras via coaxial cable
- To manage DHCP leases for cameras
Correct answer: To receive, decode, and store video streams from IP cameras over the network
An NVR connects to IP cameras over the network, pulls their streams, and stores the video to hard drives for later retrieval and review.
Question 3: Which encryption protocol is recommended for securing IP camera web interfaces and remote access?
- HTTPS (TLS/SSL) (Correct answer)
- Telnet
- HTTP
- FTP
Correct answer: HTTPS (TLS/SSL)
HTTPS with TLS/SSL encryption protects login credentials and video streams from interception during remote access to IP cameras and NVRs.
Question 4: What is port forwarding used for in a remote CCTV viewing setup?
- To route external internet traffic to the NVR inside the local network (Correct answer)
- To increase video frame rate
- To extend the range of wireless cameras
- To duplicate video streams to multiple monitors
Correct answer: To route external internet traffic to the NVR inside the local network
Port forwarding on a router directs incoming internet requests on a specific port to the NVR's local IP address, enabling remote viewing from outside the network.
Question 5: What does Quality of Service (QoS) accomplish in a CCTV network?
- Prioritizes camera video traffic to prevent buffering and dropped frames (Correct answer)
- Increases camera megapixel count
- Automatically updates camera firmware
- Detects motion in video feeds
Correct answer: Prioritizes camera video traffic to prevent buffering and dropped frames
QoS settings on network switches and routers give CCTV traffic higher priority over less time-sensitive data, ensuring smooth video streams during peak network usage.
Question 6: What is a static IP address, and why is it important for CCTV cameras?
- A fixed address that never changes, ensuring the NVR always finds the camera at the same location (Correct answer)
- An address assigned automatically each time the camera restarts
- An address used only for wireless cameras
- A temporary address used during initial setup
Correct answer: A fixed address that never changes, ensuring the NVR always finds the camera at the same location
Static IP addresses are permanently assigned to cameras so the NVR and remote viewers can always connect to the correct device without address-change interruptions.
CCTV CCTV Network & IP Camera Configuration 2
What is the maximum recommended cable run for standard Cat6 Ethernet cable in a CCTV installation?