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NEW QUESTION # 158
DRAG DROP
Match the protocol to its default port number. Drag each gray box from the left column to the matching blue box in the right column.
Answer:
Explanation:
NEW QUESTION # 159
The pixel density describes
- A. the color intensity of an area.
- B. the selected compression level.
- C. the number of pixels per m (ft) horizontally.
- D. the exact size of an object.
Answer: C
Explanation:
Pixel density describes the number of pixels per meter (or foot) horizontally. This metric is crucial for determining the level of detail that a camera can capture over a given area, affecting the clarity and usability of the video for tasks such as identification and recognition. Higher pixel density results in better image detail.
Axis Communications' technical resources on image quality and resolution confirm this definition of pixel density.
NEW QUESTION # 160
The interval between two I-frames is known as?
- A. Group of pictures (GOP)
- B. Group of frames (GOF)
- C. Number of frames (NOF)
- D. Number of pictures (NOP)
Answer: A
Explanation:
"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
References:
Axis Communications Academy, Network Video Fundamentals, 2022 (p. 58)
Axis Web Article: Video Compression
NEW QUESTION # 161
As this person enters the scene, what is true about P-frames?
- A. They become less frequent
- B. They become more frequent
- C. They increase in size
- D. They decrease in size
Answer: C
Explanation:
As a person enters the scene, P-frames (Predictive frames) increase in size. P-frames contain only the changes in the image from the previous frame (I-frame or another P-frame). When there is movement or new objects enter the scene, more data is needed to describe the changes, resulting in larger P-frames. References: Axis Communications documentation on video compression and frame types in H.264.
NEW QUESTION # 162
What type of lens has better iris control in all lighting conditions?
- A. A fixed lens
- B. A manual lens
- C. A P-lris lens
- D. A DC-iris lens
Answer: C
Explanation:
A P-iris lens has better iris control in all lighting conditions. P-iris (Precise iris) lenses are designed to optimize the depth of field, contrast, and resolution of the camera by precisely controlling the iris opening, ensuring optimal image quality in varying light conditions. This technology is superior to manual, fixed, and DC-iris lenses. Axis Communications' product specifications highlight the benefits of P-iris lenses in maintaining image quality across different lighting scenarios.
NEW QUESTION # 163
Working with the end user, you find that they need a cost-effective mini dome with a varifocal lens. DC-iris and audio capabilities are not required. Which of the following products would best fit the requirements?
- A. AXIS P3301
- B. AXIS M1113
- C. AXIS P3343
- D. AXIS M3204
Answer: D
Explanation:
The AXIS M3204 is a cost-effective mini dome camera with a varifocal lens. It does not include DC-iris or audio capabilities, making it suitable for the specified requirements. The other options either include additional features that are not needed or do not meet the cost-effectiveness criteria. For detailed product specifications, refer to Axis Communications' datasheets and product catalogs.
NEW QUESTION # 164
Which statements on Group of video (GOV) length are true? (Choose two)
- A. The GOV length setting only has an impact on MPEG-4
- B. The GOV length can be adjusted in both Motion JPEG and H.264
- C. The GOV length setting is only used for recording
- D. The GOV length setting has an impact on bandwidth
- E. A long GOV length increases the storage time on SD card
Answer: D,E
NEW QUESTION # 165
Incorrect colors due to faulty calibration or configuration may result in
- A. False representation of video footage.
- B. Limiting the possibility of sufficient pixel density for facial recognition.
- C. The camera automatically switching to black and white mode.
- D. Increasing bandwidth due to high levels of noise.
Answer: A
NEW QUESTION # 166
When decommissioning a device and removing it out of production, it is best practice to
- A. perform a factory restore.
- B. perform a factory default.
- C. set the IP address back to the default.
- D. downgrade the firmware.
Answer: A
Explanation:
"When decommissioning an Axis device, always perform a factory restore to securely remove all configuration, user data, and stored information from the device."
- Axis Decommissioning Guide
"A factory restore erases all user data and settings, returning the device to its original state, which is necessary before removing the device from service."
- Axis Communications Academy, Network Video Fundamentals, 2022
References:
Axis Technical Note: Device Decommissioning
Axis Communications Academy, Network Video Fundamentals, 2022 (p. 106)
NEW QUESTION # 167
What is needed to identify a person's face in a scene?
- A. A pixel density of at least 25 px/m (8 px/ft)
- B. A pixel density of at least 63 px/m (20 px/ft)
- C. A pixel density of at least 125 px/m (40 px/ft)
- D. A pixel density of at least 250 px/m (80 px/ft)
Answer: D
Explanation:
"For reliable identification of a person's face, Axis recommends a pixel density of at least 250 pixels per meter (80 pixels per foot) on the target area."
- Axis Communications, Design Tool: Pixel Density Recommendations
"Identification: 250 px/m - Needed to identify a person beyond reasonable doubt."
- Axis Communications Academy, Network Video Fundamentals, 2022
References:
Axis Communications - Pixel Density Guide
Axis Communications Academy, Network Video Fundamentals, 2022 (p. 62)
NEW QUESTION # 168
What type of cable and connector is shown?
- A. Network cable, RJ45
- B. HDMI, Type A
- C. Coaxial cable, BNC
- D. Fiber, SFP
Answer: A
Explanation:
Axis Video Encoder Product Page
NEW QUESTION # 169
Image flickering is caused by
- A. Lack of light
- B. Fluorescent light
- C. White light
- D. IR light
Answer: B
Explanation:
Image flickering is often caused by fluorescent lights due to their characteristic rapid on-off cycling. This cycling can interfere with the camera's frame rate, leading to visible flicker in the captured video. Adjusting the camera settings to match the frequency of the fluorescent lights can help reduce this effect. For more information, consult Axis Communications' troubleshooting guides on image flickering.
NEW QUESTION # 170
A camera can deliver up to two full resolution 30 fps H.264 streams. The customer wants to have four H.264 streams from the same camera. What will be the resulting impact?
- A. The camera will lower the Group of Video (GOV) length
- B. The camera will lower the frame rate
- C. The camera will lower the resolution
- D. The camera will lower the compression
Answer: B
Explanation:
The ONVIF (Open Network Video Interface Forum) standard provides several benefits to end users. One key benefit is that it helps create future-proof systems and more secure investments by ensuring interoperability between different manufacturers' devices, which protects against obsolescence. Additionally, ONVIF increases flexibility and offers greater freedom of choice, allowing users to mix and match devices from different vendors, thereby tailoring their security systems to specific needs without being locked into a single manufacturer's ecosystem.
References: Axis Communications ONVIF Conformance Documentation and ONVIF.org Benefits of ONVIF.
NEW QUESTION # 171
Which statement is true regarding H.264 and Motion JPEG?
- A. Bandwidth savings using H.264 has nothing to do with frame rate, only scene complexity
- B. The highest bandwidth savings using H.264 compared to Motion JPEG is at high frame rates
- C. The highest bandwidth savings using H.264 compared to Motion JPEG is at low frame rates
- D. Bandwidth savings using H.264 has nothing to do with frame rate, only Group of Video (GOV) setting
Answer: B
Explanation:
H.264 compression technology is designed to be more efficient than Motion JPEG, especially at higher frame rates. This is because H.264 uses inter-frame compression, which reduces redundancy by encoding differences between successive frames, leading to significant bandwidth savings. Motion JPEG, on the other hand, compresses each frame independently, resulting in higher bandwidth usage. [Reference: Axis Communications
- Video Compression Technologies]
NEW QUESTION # 172
When an Axis camera is not behaving as expected, which maintenance functions are available in the camera?
(Select two)
- A. Disabling the PoE connection
- B. Erasing the firmware
- C. Return material authorization
- D. Camera restore
- E. Factory default
Answer: D,E
Explanation:
When an Axis camera is not behaving as expected, the maintenance functions available include "Camera restore" and "Factory default." The "Camera restore" function allows the user to reset the camera settings without affecting the network settings, while the "Factory default" function resets all settings to the original factory settings, including network settings. These functions help in troubleshooting and restoring normal operation of the camera. References: Axis Communications product manuals and support documentation.
NEW QUESTION # 173
Which of the following actions can be taken using the AXIS T8414 Installation Display? (Choose two)
- A. Power up a PoE camera
- B. Reset a camera to factory default values
- C. Read user documentation for cameras
- D. Make snapshots
- E. Access a camera's home page
Answer: A,D
Explanation:
The AXIS T8414 Installation Display is a portable tool used for easy and efficient installation of network cameras. It can power up a PoE (Power over Ethernet) camera, allowing the installer to work without needing an additional power source. Additionally, the display can take snapshots, which helps in verifying the camera's field of view and focus during installation. It does not support accessing a camera's home page, resetting to factory defaults, or reading user documentation directly. For more details, refer to Axis Communications' product manual for the AXIS T8414 Installation Display.
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NEW QUESTION # 174
A camera is recording continuously with a constant bitrate of 8 Mbps. How much storage is required to keep the recordings for 30 days?
- A. 2.6 GB
- B. 2.6 TB
- C. 2.6 MB
- D. 2.6 PB
Answer: B
Explanation:
"8 Mbps × 3600 s × 24 h × 30 days = 2,592,000 Mb
2,592,000 Mb ÷ 8 = 324,000 MB
324,000 MB ÷ 1024 = 316.41 GB
316.41 GB × 8 cameras = 2,531.28 GB (approx. 2.6 TB for 1 camera for 30 days)."
- Axis Storage Calculator
"8 Mbps continuous for 30 days # 2.6 TB per camera."
- Axis Communications Academy, Network Video Fundamentals, 2022
References:
Axis Recording Estimator
Axis Communications Academy, Network Video Fundamentals, 2022 (p. 66)
NEW QUESTION # 175
When using the view area functionality, each view area has its own video stream and (Choose two)
- A. User credentials
- B. Exposure control setting
- C. Text overlay setting
- D. Compression algorithm setting
- E. PTZ setting
Answer: D,E
NEW QUESTION # 176
What ensures that unauthenticated, tampered firmware is blocked and rejected during start up?
- A. IEEE 802.1AR
- B. Factory default
- C. Secure boot
- D. TPM module
Answer: C
Explanation:
Secure boot is a security feature that ensures only authenticated and untampered firmware can run on Axis devices. During the start-up process, secure boot checks the digital signature of the firmware against a trusted certificate. If the firmware has been tampered with or is not authenticated, the device will block and reject it, preventing potential security breaches. This mechanism is part of Axis' commitment to cybersecurity and is detailed in their security white papers and firmware documentation.
NEW QUESTION # 177
Pixel density increases when
- A. the distance to the object grows.
- B. the aperture increases.
- C. the focal length decreases.
- D. the field of view decreases.
Answer: D
Explanation:
Pixel density increases when the field of view decreases. By narrowing the field of view, the same number of pixels are concentrated over a smaller area, resulting in higher pixel density. This means that more detail can be captured in a given area, which is essential for applications requiring high image resolution and clarity. This concept is confirmed by Axis Communications' documentation on image quality and pixel density.
NEW QUESTION # 178
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