Free Practice Questions for Axis Communications ANVE Exam

A camera lens with a low f-stop value, such as 1.2, has a larger aperture, allowing more light to enter the camera. This improves the camera's performance in low-light conditions by increasing its sensitivity to light, resulting in clearer and more detailed images when lighting is poor. [Reference: Axis Communications - Camera Lens and Aperture]

The f-stop value of a lens will get higher if you zoom in. This is true because as the focal length increases (when zooming in), the lens aperture typically becomes smaller, resulting in a higher f-stop value. This change affects the amount of light entering the camera, which is an important consideration for PTZ (Pan-Tilt-Zoom) cameras when they are used in varying lighting conditions.

In a switched network with Unicast, data packets are sent from the source to a single specific recipient. No other computers on the network will receive the data intended for that recipient. This method ensures that the communication is direct and private between the sender and the receiver, which helps in managing network bandwidth efficiently. [Reference: Axis Communications - Networking Basics for IP Surveillance]

Arctic Temperature Control is a feature designed to ensure the longevity and reliable performance of network cameras in extremely low-temperature environments. This feature allows the camera to perform a stepped start-up at low ambient temperatures, gradually warming up the camera to avoid potential damage caused by sudden exposure to extreme cold. This controlled start-up process helps protect the camera's internal components and ensures consistent performance. Therefore, option D is correct. For more detailed information, refer to Axis Communications' product documentation on Arctic Temperature Control technology.

Multicast video streaming has several important characteristics:

A. Multicast can help to save bandwidth in a network because it allows the same video stream to be delivered to multiple users simultaneously, reducing the need for multiple unicast streams.

B. Multicast can typically not be used to provide video over the internet because many routers and firewalls do not support multicast traffic across the internet, which is more suited for local network environments.

D. Multicast extends the viewer capacity of a camera or an encoder from 10-20 to an unlimited number, as it does not rely on multiple individual connections to distribute the video stream.

To reduce the impact on recorded video during server maintenance, Video Management Software (VMS) partners can incorporate local storage at the camera. This feature allows the camera to continue recording video on its internal storage (such as an SD card) during network or server downtime, ensuring continuous video capture. Once the server is back online, the recorded footage can be transferred back to the central storage. Axis cameras support local storage options, which are detailed in Axis Communications' product documentation and VMS integration guides.

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For multicast streaming to be effective, the network infrastructure must support multicast protocols. This involves network switches and routers that can handle multicast traffic, allowing video streams to be efficiently distributed to multiple clients simultaneously. Multicast reduces the load on the network by sending a single stream of data to multiple receivers, making it essential for large-scale surveillance deployments. [Reference: Axis Communications - Multicast Streaming Requirements]

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Focusing a camera with an auto iris is more accurate when set during lowlight conditions. In low light, the iris opens wider, resulting in a shorter depth of field. This forces the focus to be more precise within that narrower range, ensuring that the focus is set correctly. When lighting conditions improve and the iris closes down, the depth of field increases, maintaining a broader range of focus.

ONVIF (Open Network Video Interface Forum) is the API used to ensure interoperability between products from different vendors. ONVIF provides standardized interfaces for effective interoperability among IP-based physical security products, enabling devices like cameras, video management systems, and access control systems from different manufacturers to work together seamlessly.