Free Practice Questions for Axis Communications ANVE Exam

Using bidirectional predictive interframe in H.264, also known as B-frames, will increase the latency in the system. B-frames depend on both previous and future frames (I-frames and P-frames) for encoding, which requires more processing time and thus increases the latency. This trade-off allows for more efficient compression and smaller file sizes but at the cost of increased delay. References: Axis Communications documentation on H.264 video compression and the use of B-frames.

“The interval between two I-frames (intra-coded frames) in a compressed video stream is called the Group of Pictures (GOP). The GOP defines how many frames are between full image frames and is a key concept in video compression.”

— Axis Communications Academy, Network Video Fundamentals, 2022

“A GOP (Group of Pictures) consists of one I-frame followed by a series of P-frames and B-frames, until the next I-frame appears.”

— Axis Web Article: Video Compression

The main benefit of signed firmware is that it allows the device to verify the integrity and authenticity of the firmware before it is installed. This process ensures that the firmware has not been tampered with and is from a trusted source, thereby enhancing the security of the device. Signed firmware prevents unauthorized or malicious firmware from being installed, which is crucial for maintaining the security and reliability of network devices. Axis documentation emphasizes the importance of signed firmware in protecting devices from potential security threats by verifying the firmware's integrity.

Video analytics applications detect movement perpendicular to the camera more easily than movement toward or away from the camera. This is because objects moving perpendicular to the camera create more significant changes in the pixel patterns, making it easier for the analytics software to detect and analyze the movement. Movement toward or away from the camera results in smaller changes in pixel patterns, which can be harder to detect accurately. References: Axis Communications documentation on video analytics and movement detection.

“Shutter speed determines how long the camera sensor is exposed to light. A fast shutter speed minimizes motion blur, while a slow shutter speed increases the likelihood of motion blur in moving objects.”

— Axis Communications Academy, Network Video Fundamentals, 2022

“Motion blur in surveillance footage is primarily affected by the camera’s shutter speed setting, not the frame rate or compression.”

— Axis Communications, Shutter and Exposure

The AXIS P3247-LVE provides the greatest deterrence effect. This model is a robust, vandal-resistant network camera designed for outdoor use with advanced features such as IR illumination, advanced video analytics, and a rugged design. Its visible presence and high-quality image capture capabilities serve as a strong deterrent to potential intruders and vandals.

Closing the aperture at a fixed focal length increases the f-number (aperture value), resulting in a longer depth of field. This means that a greater portion of the scene will be in focus, both in the foreground and background. A higher f-number indicates a smaller aperture, which allows less light to enter the lens but enhances the sharpness and clarity of the image over a larger depth. References: Axis Communications camera optics and image quality documentation.

Top of Form

Bottom of Form

Fixed box cameras typically use a CS-mount lens, which allows for easy installation and flexibility in changing lenses to meet different surveillance needs. The CS-mount standard is widely used in the security industry and provides compatibility with a variety of lens types. Axis Communications' fixed box cameras often feature CS-mount lenses, as detailed in their product specifications and installation guides.

Keeping firmware up to date helps a device stay as cybersecure as possible by addressing vulnerabilities and incorporating security patches. Regular updates ensure that the device is protected against the latest threats. Additionally, updating firmware helps the device remain compatible with the Video Management System (VMS), ensuring that it can work seamlessly with the latest software features and improvements. References: Axis Communications security and firmware update policies.