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You are assisting a customer who has issues with his PLC home automation system. He complains that three of the lights in a room turn ON and OFF intermittently. Which of the following should you ask the customer first?


A) Are the light bulbs in the room securely installed?
B) Have you removed or replaced the PLC lighting modules?
C) Have you added any new electrical devices in service at home?
D) Have you plugged any new electrical devices into the electrical circuits in the room in question?

E) B) and C)
F) All of the above

Correct Answer

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You want to use a coaxial cabling type that runs longer than 200 feet. Which of the following should you use?


A) RG8
B) RG58
C) RG6
D) RG56

E) All of the above
F) C) and D)

Correct Answer

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Which of the following is true for Ohm's law?


A) Ohm's law states that a steady increase in voltage should reduce the magnitude of current through the circuit that has constant resistance.
B) Ohm's law states that a steady decrease in voltage should increase the magnitude of current through the circuit that has constant resistance.
C) Ohm's law states that a steady decrease in voltage should increase the magnitude of current through the circuit and increase the resistance offered by the circuit.
D) Ohm's law states that a steady increase in voltage should produce a constant and linear increase in current through the circuit that has constant resistance.

E) A) and D)
F) All of the above

Correct Answer

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You are experiencing dark bars on your TV video display. Which of the following may be the most probable cause of this issue?


A) AC power interference
B) Insufficient cable bandwidth
C) Signal interruption between TV and modulator
D) High signal strength

E) A) and D)
F) B) and C)

Correct Answer

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What is the decrease of the speaker volume in dB if the distance from the speaker to the sound source is doubled?


A) 3 dB
B) 4 dB
C) 2 dB
D) 6 dB

E) B) and D)
F) B) and C)

Correct Answer

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What is the maximum length of the patch cords used to connect a computer to a wall outlet?


A) 100 feet
B) 100 meters
C) 3 meters
D) 10 meters

E) A) and D)
F) C) and D)

Correct Answer

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Which of the following is not a private IP address range?


A) 10.0.0.0 to 10.255.255.255
B) 12.0.0.0 to 12.255.255.255
C) 172.16.0.0 to 172.31.255.255
D) 192.168.0.0 to 192.162.255.255

E) None of the above
F) C) and D)

Correct Answer

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Identify the connector type displayed in the image.


A) FC
B) MT-RJ
C) SMA
D) LC

E) None of the above
F) B) and D)

Correct Answer

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Which of the following characteristics of a video image does scaling set?


A) Bandwidth
B) Resolution
C) Color
D) Speed

E) A) and B)
F) B) and D)

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Which of the following is a secondary criterion when choosing a video camera for a surveillance system?


A) Focal length
B) Mounting style
C) Light sensitivity
D) Color

E) C) and D)
F) A) and B)

Correct Answer

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Which of the following WLAN modes do not require an access point?


A) Infrastructure mode
B) Ad-hoc mode
C) Access mode
D) Wireless mode

E) None of the above
F) B) and D)

Correct Answer

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Which of the following is the unit used to measure the light sensitivity of a camera?


A) Ohms
B) Lux
C) Volts
D) Microfarads

E) A) and B)
F) None of the above

Correct Answer

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Which of the following is a standard that defines the transmission of HDTV signals across a home's electrical service lines?


A) HomePlug 1.0 Turbo
B) HomePlug AV
C) CEBus
D) HomePNA

E) A) and B)
F) None of the above

Correct Answer

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Which of the following is a digital key system feature that allows for the integration of voice and data features and functions?


A) ACD
B) POTS
C) IVR
D) CTI

E) A) and B)
F) A) and C)

Correct Answer

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