What type of lens does a fixed box camera typically use?
Options:
A.
A C-mount lens
B.
ATA-lens
C.
An M12 lens
D.
A CS-mount lens
Answer:
D
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.
Question 26
AXIS Site Designer has which feature?
Options:
A.
Firmware recommendations
B.
Bandwidth and storage estimation
C.
BIM data summary
D.
Site maintenance planner
Answer:
B
Explanation:
AXIS Site Designer is a tool that helps in designing and planning surveillance systems. One of its key features is bandwidth and storage estimation, which allows users to calculate the required network bandwidth and storage capacity based on the selected cameras and their settings. This feature ensures that the surveillance system is properly scaled and resources are efficiently allocated. References: Axis Communications AXIS Site Designer tool documentation and user guides.
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Question 27
Keeping firmware up to date helps a device to
Options:
A.
maintain its IP-rating.
B.
stay as cybersecure as possible.
C.
remain in focus constantly.
D.
stay compatible with the VMS.
Answer:
B, D
Explanation:
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.
Question 28
Why is germanium used for thermal camera lenses?
Options:
A.
It is inexpensive
B.
It has a low index of refraction
C.
It has high optical dispersion
D.
It is transparent to the infrared wavelengths
Answer:
D
Explanation:
Germanium is used for thermal camera lenses because it is transparent to infrared wavelengths. This transparency allows infrared radiation to pass through the lens and reach the camera sensor, enabling the capture of thermal images. Germanium's optical properties make it an ideal material for thermal imaging applications. References: Axis Communications thermal camera specifications and technical documentation.