The main benefit of using Power over Ethernet (PoE) is that
Options:
A.
the installation is less sensitive to interference.
B.
the installation costs less.
C the installation consumes less power.
C.
the installation is more secure.
Answer:
B
Explanation:
The main benefit of using Power over Ethernet (PoE) is cost reduction in installation. PoE allows network cables to carry both data and power, eliminating the need for separate power lines and reducing the amount of cabling required. This simplifies installation, reduces material costs, and allows greater flexibility in camera placement. Axis Communications notes that PoE significantly cuts down on installation expenses by streamlining the infrastructure needed for network devices.
Question 30
Lowering the shutter speed can produce
Options:
A.
increased noise.
B.
motion blur.
C.
a darker image.
D.
reflections.
Answer:
B
Explanation:
Lowering the shutter speed can produce motion blur because the camera sensor is exposed to light for a longer period, capturing the movement of objects within the frame. This results in a blurry representation of moving objects, which can be useful for artistic effects but undesirable for capturing fast-moving subjects clearly. References: Axis Communications camera user guides and image capture documentation.
Question 31
Which of the following describes bandwidth?
Options:
A.
The value of the maximum bit rate set in the camera’s web interface
B.
The maximum rate of data transfer for a given network path
C.
The maximum amount of storage available to record the video stream
D.
The total amount of video stream data produced by an IP camera
Answer:
B
Explanation:
"Bandwidth refers to the maximum rate of data transfer across a given network path. It is measured in bits per second (bps) and determines how much data can be transmitted over a network in a given amount of time."
— Axis Communications Academy, Network Video Fundamentals, 2022
"Bandwidth is a measure of the network's capacity to carry data, not the amount of data a device produces or the storage available."
— Axis Communications, Understanding Bandwidth
[References:, , Axis Communications Academy, Network Video Fundamentals, 2022 (p. 49–50), , Axis Web Article: Understanding Bandwidth]
Question 32
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.
