ANVE Practice Questions

A multisensor panoramic camera (like those in the AXIS P37 or Q37 series) uses multiple image sensors stitched together to provide a seamless 180-degree or 360-degree field of view. This provides a constant, high-resolution overview of the entire area. Operators can then use digital PTZ to zoom into specific parts of the panoramic image for detail, without any moving parts and without losing the overall situational awareness.

Axis Zipstream is an advanced implementation of H.264/H.265 that can dramatically reduce bitrate, and thus storage requirements, by an average of 50% or more. It does this by preserving forensic detail in important areas of the image while aggressively compressing static background areas. For a given resolution and frame rate, enabling Zipstream will have the largest impact on reducing storage compared to other settings.

The f-number represents the ratio of the lens's focal length to the diameter of its aperture. A lower f-number means the aperture is wider, allowing more light to pass through the lens and hit the image sensor. This results in better performance in low-light conditions, as the camera can gather more light to create a brighter, cleaner image.

Virtual Local Area Networks (VLANs), defined by the IEEE 802.1Q standard, allow a single physical switch to be partitioned into multiple logical networks. As shown in the diagram, devices in VLAN 20 (Surveillance) are isolated from devices in VLAN 10 (Corporate) at Layer 2. They cannot communicate directly and act as if they are on separate physical switches, which enhances security and contains broadcast traffic.

AXIS Device Manager is the correct tool for this task. It is designed for installing and managing large numbers of Axis network devices. It allows administrators to discover devices, assign IP addresses, set passwords, apply configuration templates, manage certificates, and upgrade firmware for multiple devices at once, making it essential for efficient large-scale deployments.

Axis Corridor Format is the correct feature. It electronically rotates the video stream by 90 degrees, creating a vertical, portrait-oriented 9:16 aspect ratio. This is ideal for long, narrow areas like hallways, aisles, and tunnels, as it maximizes pixel coverage on the area of interest and eliminates bandwidth and storage waste from capturing irrelevant wall space.

The 'L' in the suffix indicates the camera has built-in IR illumination (OptimizedIR).

The 'P' indicates it is part of the AXIS P-series, which are versatile cameras for all-around surveillance. The '32' designates it as a fixed dome camera.

IEEE 802.1X is a port-based network access control (PNAC) standard. It provides an authentication mechanism to devices wishing to attach to a LAN or WLAN. When a camera supporting 802.1X connects to a configured switch port, it must authenticate with a central server (like RADIUS) before the switch grants it access to the network, preventing unauthorized device connections.

This statement is false. Zipstream does not remove entire frames. Instead, it analyzes the scene to identify areas of interest (like moving people) and static background areas. It then applies higher compression to the static background areas while preserving high detail in the areas of interest. Dynamic GOP adjusts the frequency of I-frames based on motion, but it does not remove frames from the stream.

Electronic Image Stabilization (EIS) is designed to reduce the visible effects of vibration in a video stream. It works by using the image sensor to create a slightly larger image than the final output, allowing the processor to shift the active area to counteract camera shake. This is the ideal solution for installations on poles, bridges, or other structures prone to vibration.