In many places 24 V AC has been popular as a power source but now 12 V and 24 V DC is increasing in popularity because

• A.There is less power loss in cables with D
• B.There is less risk for surge with DC.
• C.It is easier to back-up DC with battery.
• D.There is more energy in DC.

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Which statement is true for broadcast network traffic?

• A.Broadcast is a method for sending video to many recipients over the internet even though their bandwidths vary
• B.Broadcast is not practical for network video transmission, since packets are transmitted to every device on the network
• C.Broadcast data packet length is longer than normal Ethernet packets, to accommodate a full video frame
• D.Broadcast is designed to enable optimized video transmission, since it tolerates network dropouts

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Which setting would best adjust a hard yellow tint as shown in the pictures below?

• A.Image brightness
• B.Image contrast
• C.White balance
• D.Color saturation

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Focusing a camera improves the image, but it also

• A.Has an effect on the frame rate
• B.Changes the pixel resolution
• C.Decreases the bandwidth
• D.Increases the bandwidth

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Increased noise levels in a scene will increase the

• A.Brightness level.
• B.Light sensitivity.
• C.Contrast level.
• D.Bandwidth usage.

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