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NEW QUESTION # 108
What is the benefit of deinterlacing the video in a video encoder?
- A. It decreases the bandwidth needed to transmit the compressed video
- B. It gives the encoded video a higher frame rate compared to the analog input video
- C. It reduces the tearing effects when there is movement between two fields in one frame
- D. It enhances the dynamic range between two fields in one frame
Answer: C
NEW QUESTION # 109
When using IR illuminators, which wavelengths would not produce any visible glow?
- A. 850 nm
- B. 650 nm
- C. 750 nm
- D. 940 nm
Answer: D
Explanation:
Infrared (IR) illuminators with a wavelength of 940 nm do not produce any visible glow. This wavelength is completely invisible to the human eye, making it ideal for covert surveillance applications where the presence of IR illumination needs to be undetectable. Other wavelengths like 650 nm, 750 nm, and 850 nm can produce a faint red glow that may be visible in low light conditions.
NEW QUESTION # 110
A camera lens with a low f-stop value of 1.2 will outperform a lens with a higher f-stop value due to which one of the parameters below?
- A. Less image artifacts
- B. Better low light capability
- C. Improved sharpness
- D. Better depth of field
Answer: B
Explanation:
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]
NEW QUESTION # 111
If a camera is pointed down a hallway with no windows and the color seems "washed out" or faded, which of the following settings should first be adjusted to improve the image?
- A. Uncheck backlight compensation
- B. Increase image contrast
- C. Decrease image brightness
- D. Adjust the exposure settings
Answer: D
Explanation:
When a camera's image appears "washed out" or faded, especially in a hallway with no windows, the first setting to adjust is the exposure settings. Proper exposure settings ensure that the camera captures the right amount of light, enhancing image quality and color accuracy. Adjusting settings such as the shutter speed, iris, and gain can help improve the overall image contrast and color fidelity. [Reference: Axis Communications - Image Quality Settings and Adjustments]
NEW QUESTION # 112
When installing a camera outdoors to an existing pole, what is the most important consideration?
- A. Availability of power
- B. The camera has to be ruggedized
- C. Wide dynamic range
- D. The material of the housing
Answer: A
NEW QUESTION # 113
What type of lens does a fixed box camera typically use?
- A. A CS-mount lens
- B. An M12 lens
- C. ATA-lens
- D. A C-mount lens
Answer: A
Explanation:
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.
NEW QUESTION # 114
How do PTZ cameras use lasers to improve focus?
- A. The laser provides the target reflectance
- B. The laser makes an invisible target the PTZ locks on to
- C. The laser provides the target distance
- D. The laser provides additional illumination for the scene
Answer: C
Explanation:
PTZ cameras use lasers to measure the distance to the target, which allows for quick and accurate focusing.
The laser range finder determines the precise distance between the camera and the subject, enabling the camera to adjust its focus optimally. This technology ensures that the camera can focus rapidly and accurately, even in challenging lighting conditions or when the target is moving. Axis Communications' technical specifications for PTZ cameras confirm that laser technology is employed to enhance focus performance by providing target distance information.
NEW QUESTION # 115
Using AXIS Camera Management, which of the following can be performed? (Choose two)
- A. Apply templates to devices
- B. View recorded video
- C. Configure crossline detection
- D. Set motion detection windows
- E. Upgrade firmware
Answer: A,E
Explanation:
AXIS Camera Management (ACM) is a powerful tool for managing multiple Axis network devices efficiently.
With ACM, administrators can apply templates to devices, which streamlines the configuration process by allowing predefined settings to be distributed across multiple devices. Additionally, ACM facilitates the upgrading of firmware on Axis devices, ensuring that all cameras and encoders are up-to-date with the latest features and security patches. Axis Network Video documentation highlights these capabilities as key features of ACM, enhancing the overall management and maintenance of surveillance systems.
NEW QUESTION # 116
When using Axis' Corridor Format
- A. The depth of field is automatically adjusted to keep the entire length of a corridor in focus.
- B. Axis PTZ cameras can automatically track people walking down a corridor.
- C. The image is rotated 90 degrees, changing the aspect ratio to 9:16.
- D. Privacy masks block out areas outside the specified corridor width.
Answer: C
Explanation:
When using Axis' Corridor Format, the image is rotated 90 degrees, changing the aspect ratio to 9:16. This format is particularly useful for monitoring narrow, vertical areas such as hallways, corridors, and aisles, maximizing the camera's field of view in such environments and ensuring better coverage of the intended area while minimizing wasted pixels on unimportant regions like walls.
Reference: Axis Communications - Corridor F
NEW QUESTION # 117
Typically, a system designer calculates the pixel density based on
- A. the total resolution and the installation height.
- B. the horizontal resolution and the field of view.
- C. the illuminance and the depth of field.
- D. the aspect ratio and the frame rate.
Answer: B
Explanation:
Typically, a system designer calculates the pixel density based on the horizontal resolution and the field of view. Pixel density is crucial in determining the level of detail a camera can capture in a specific area.
Horizontal resolution refers to the number of pixels along the horizontal axis of the image sensor, while the field of view is the extent of the observable area captured by the camera. This calculation helps in ensuring that the camera setup meets the surveillance requirements.References: Axis Communications Design Tool
NEW QUESTION # 118
Adding network surveillance cameras to an existing Ethernet network
- A. Will benefit from establishing VPN connections to the cameras, reducing the risk of malicious users eavesdropping on the video.
- B. Is not recommended, since bandwidth demands from the surveillance video would likely congest the network.
- C. Will cause unacceptable video latency, due to the amount of UDP traffic taking precedence on the network.
- D. Will benefit from using VLANs, to keep the surveillance video separate from other network traffic, reducing the risk for network congestion.
Answer: D
Explanation:
Adding network surveillance cameras to an existing Ethernet network will benefit from using VLANs (Virtual Local Area Networks) to keep the surveillance video separate from other network traffic. This separation reduces the risk of network congestion by prioritizing surveillance video traffic and ensuring sufficient bandwidth is available for video data. VLANs enhance network performance and security by segmenting traffic and minimizing interference from other network activities.
NEW QUESTION # 119
statement best describes how an ACAP works?
- A. The analytic is run on a remote server
- B. The analytic is run on a local server
- C. The analytic is run on a cloud server
- D. The analytic is run on the device
Answer: D
Explanation:
ACAP (Axis Camera Application Platform) analytics run directly on the device. This means that the processing and analysis of data occur on the camera itself, rather than on a separate server or in the cloud.
Running analytics on the device reduces the need for additional hardware and network bandwidth, and it allows for faster decision-making and real-time alerts. This information is confirmed by Axis Communications' documentation on ACAP.
NEW QUESTION # 120
Which rating is important when vandalism is a risk?
- A. UL
- B. IP
- C. IK
- D. ONVIF
Answer: C
Explanation:
The IK rating is a measure of a device's resistance to mechanical impact, making it crucial for environments where vandalism is a concern. A higher IK rating indicates better protection against physical attacks, ensuring that the camera can withstand attempts to damage it. Axis cameras designed for high-risk areas typically feature robust housings with high IK ratings, which are specified in their product datasheets and installation guides.
NEW QUESTION # 121
A company is looking for a dome designed to withstand vibrations inherent to transportation. Which of the following cameras should be recommended?
- A. AXIS M3114-R
- B. AXIS P3344-VE
- C. AXIS P1344
- D. AXIS M3014
Answer: A
NEW QUESTION # 122
Which of the following statements is a recommended best practice for outdoor installations of Axis cameras?
- A. Ensure that a surge suppressor is installed in front of each camera
- B. Connect cameras and end points (midspan, endspan. network switch or hub) with Category 5e UTP cable
- C. Connect a UPS to the network switch
- D. Ensure that the end points are properly grounded
Answer: A
Explanation:
When installing Axis cameras outdoors, it's crucial to protect the equipment from electrical surges, which can occur due to lightning or other power disturbances. Installing a surge suppressor in front of each camera helps prevent damage from these surges, ensuring the longevity and reliability of the camera system. While grounding endpoints and using UPS for the network switch are also good practices, surge protection directly in front of each camera is specifically emphasized in Axis's best practices for outdoor installations.
NEW QUESTION # 123
The reason why the camera is not blinded by the headlights is that
- A. the gain is set to a high value.
- B. the IR light is the stronger source.
- C. the exposure time is extremely long.
- D. an IR-pass filter is in use.
Answer: D
Explanation:
The reason why the camera is not blinded by the headlights is that an IR-pass filter is in use. This filter blocks out visible light, including the bright headlights, and allows only infrared light to pass through. This is particularly useful in nighttime surveillance scenarios where the camera can rely on infrared illumination instead of visible light, ensuring clear visibility even in the presence of bright lights like headlights.
Reference: Axis Communications. "IR-pass filter usage in surveillance cameras." Axis IR-pass filter.
NEW QUESTION # 124
A P-iris lens is
- A. An iris with higher light sensitivity.
- B. An iris specially made for zoom lenses.
- C. A DC-iris with feedback.
- D. Axis' standard for DC-iris.
Answer: C
Explanation:
A P-iris lens is a type of DC-iris lens that incorporates feedback to maintain optimal image quality. Unlike a standard DC-iris, which only adjusts based on light levels, a P-iris lens uses a feedback mechanism to optimize the iris position, ensuring consistent image sharpness, depth of field, and optimal contrast. This technology allows for precise control over the iris, which is especially beneficial in varying lighting conditions. According to Axis documentation, P-iris lenses are designed to deliver better performance by continuously adjusting the iris for optimal image quality.
NEW QUESTION # 125
In a dark indoor environment one single Axis illuminator is available. At a distance of 1 m (3 ft 3 in) away from the illuminator the light intensity is 1024 lux. At what distance from the light source will the light intensity be 256 lux?
- A. 2 m (6 ft 7 in)
- B. 4m{13 ft 1 in)
- C. 16 m (52 ft 6 in)
- D. 8 m (26 ft 3 in)
Answer: A
NEW QUESTION # 126
Which layer 4 protocol has less overhead information?
- A. IP
- B. HTTP
- C. UDP
- D. TCP
Answer: C
Explanation:
UDP (User Datagram Protocol) has less overhead information compared to TCP (Transmission Control Protocol). UDP is a simpler, connectionless protocol that does not require handshaking or error-checking mechanisms, resulting in lower overhead and faster transmission of data. This makes UDP more efficient for real-time applications such as video streaming, as detailed in Axis Communications' technical guides on network protocols.
NEW QUESTION # 127
In setting up PTZ control for an Axis encoder, it's very easy to overlook a very important step in the configuration process. After properly connecting the communication wires to the encoder, the next recommended step in the setup is:
- A. Setting the Device ID to match the analog ID
- B. Uploading the correct PTZ driver
- C. Downloading the correct Device ID from the Axis website
- D. Setting the Baud Rate to match the analog PTZ' s
Answer: D
Explanation:
When setting up PTZ control for an Axis encoder, after connecting the communication wires, it is crucial to set the Baud Rate to match the analog PTZ's. This step ensures proper communication between the encoder and the PTZ camera. The Baud Rate must align with the camera's communication settings to function correctly. For more detailed setup instructions, refer to the Axis Communications installation guides and user manuals for PTZ configuration.
NEW QUESTION # 128
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