Chapter 6 & 7

What is the advantage of using an HDMI connector in a network video system?

• It can transmit uncompressed digital video

• It can transmit audio and video

• It is an analog connector

• It is cheap

What type of connector is typically used to connect analogue cameras to a monitor in a video surveillance system?

• BNC

• RGB

• HDMI

• VGA

How is a video wall formed?

• Using gas-display technology

• Using CRT technology

• Using LCD monitors

• Using LED computer screens, traditional television sets and video projectors

Where can portable projectors be used?

• Only in a dark room

• Only on a ceiling

• Only on a white or light coloured wall

• Anywhere there is a bright surface

What type of cable is commonly used to connect analogue cameras to recorders in video surveillance systems?

• RGB cable

• HDMI cable

• Coaxial cable

• Ethernet cable

What is the purpose of the shield on a coaxial cable?

• To improve the image quality

• To reduce the unwanted noise

• To increase the signal strength

• To protect the center conductor from EMI

How is the shielding of a coaxial cable grounded in order to reduce EMI effectively?

• By connecting the shield to a ground

• By connecting the shield to the center core

• By connecting the shield to the power source

• By connecting the shield to the monitor end

What type of network cable is commonly used in IP CCTV systems?

• Coaxial cable

• UTP cable

• HDMI cable

• RGB cable

What is the purpose of the twisted wires in UTP cables?

• To increase the signal strength

• To improve the image quality

• To reduce the unwanted noise

• To minimize external electromagnetic interference

What type of cable is considered the most secured form of transmission for long distance video?

• UTP cable

• Coaxial cable

• Copper wire

• Fiber optic cable