Surveillance Technology Quiz 3 (SDL)

Label the parts of a coaxial cable.

d

c

b

a

Copper shield

Dielectric

Protective plastic

Center conductor

RG-59/U, RG-6/U and RG-11/U cables have an impedance of ______ ohms.

• 25

• 50

• 75

• 100

In a coaxial cable, the larger the diameter of the copper conductor, the ______ is the signal loss.

• higher

• lower

An AWG 24 cable is thicker than an AWG 20 cable. True or False.

• * AWG = American Wire Gauge

• True

• False

A properly grounded copper shield of a coaxial cable will ______.

• improve cable strength

• reduce EMI interference

• improve current conduction

• improve signal strength

Organize these options into the right categories

Groups:

(a) Balanced Cable

,

(b) Unbalanced Cable

• Coaxial cable

• Ethernet cable

• Fiber Optic cable

• Earphone Audio cable

The twisting of the ethernet cable is to ______

• improve the cable strength.

• reduce EMI or crosstalk interference.

• make the cable looks nicer.

• group the same colored cables together.

A video balun allows us to ______

• extend the range of coaxial cable.

• convert analog camera to IP camera

• inject power into coaxial cables

• use UTP cable on analog CCTV cameras

Advantages of UTP cable over coaxial cables are ______

Select all that applies.

• UTP is cheaper.

• UTP has lower frequency lost.

• UTP is smaller in diameter.

• UTP is reduced in electromagnetic interference.

Fiber optics cable uses ______ to transmit data.

• sound

• vibration

• electricity

• light