Spectrum Field Technician 1 Test UPDATED
ACTUAL Exam Questions and CORRECT
Answers
Decibel (dB) - CORRECT ANSWER Relative # of signal gain or loss through a device or
cable.
Decibel millivolt (dBmV) - CORRECT ANSWER Absolute # of signal strength.
Foreign voltage detector (FVD) - CORRECT ANSWER Detects unwanted voltage on
cables/strands; test on plastics too.
Data Over Cable Service Interface Specification (DOCSIS) - CORRECT ANSWER The
international standard for adding high-bandwidth data to an existing cable system.
What does SAFE stand for? - CORRECT ANSWER Stop. Assess. Focus. Eliminate.
What does NCP stand for? - CORRECT ANSWER Next. Channel. Pointer.
What does SLM stand for? - CORRECT ANSWER Signal. Level. Meter.
What is a signal level meter? - CORRECT ANSWER Tool used to run multiple tests
involving signal level, MER, BER and noise level.
What does CNR stand for? - CORRECT ANSWER Carrier to Noise Ratio.
What is the purpose of CNR? - CORRECT ANSWER Comparing level of desired signal
to level of background noise.
, What is Hum modulation? - CORRECT ANSWER The distortion of both cable video and
audio.
How can you identify video hum? - CORRECT ANSWER Visually seeing single (60Hz)
or double (120Hz) horizontal bars rolling slowly up from bottom to top of television.
How can you identify audio hum? - CORRECT ANSWER By physically hearing a
buzzing sound.
what does BER stand for and what does it do? - CORRECT ANSWER Bit. Error. Ratio.
Overall measure of data quality of the received bit stream.
Consequences of BER (2 things). - CORRECT ANSWER 1.) Video: picture fails
2.) Data: loss of dial tone
What is the max length of a ground wire? - CORRECT ANSWER 20 feet (want the wire
as short as possible).
What causes high BER (3 things)? - CORRECT ANSWER 1.) Ingress: poor connections
2.) Distortion: undesired change in electrical signal
3.) Noise: unwanted disturbance to a desired signal
What is the desired BER level? - CORRECT ANSWER 1.0E-9
What does MER stand for? - CORRECT ANSWER Modulation. Error. Ratio.
How many channels can go into a QAM? - CORRECT ANSWER 8-12.
ACTUAL Exam Questions and CORRECT
Answers
Decibel (dB) - CORRECT ANSWER Relative # of signal gain or loss through a device or
cable.
Decibel millivolt (dBmV) - CORRECT ANSWER Absolute # of signal strength.
Foreign voltage detector (FVD) - CORRECT ANSWER Detects unwanted voltage on
cables/strands; test on plastics too.
Data Over Cable Service Interface Specification (DOCSIS) - CORRECT ANSWER The
international standard for adding high-bandwidth data to an existing cable system.
What does SAFE stand for? - CORRECT ANSWER Stop. Assess. Focus. Eliminate.
What does NCP stand for? - CORRECT ANSWER Next. Channel. Pointer.
What does SLM stand for? - CORRECT ANSWER Signal. Level. Meter.
What is a signal level meter? - CORRECT ANSWER Tool used to run multiple tests
involving signal level, MER, BER and noise level.
What does CNR stand for? - CORRECT ANSWER Carrier to Noise Ratio.
What is the purpose of CNR? - CORRECT ANSWER Comparing level of desired signal
to level of background noise.
, What is Hum modulation? - CORRECT ANSWER The distortion of both cable video and
audio.
How can you identify video hum? - CORRECT ANSWER Visually seeing single (60Hz)
or double (120Hz) horizontal bars rolling slowly up from bottom to top of television.
How can you identify audio hum? - CORRECT ANSWER By physically hearing a
buzzing sound.
what does BER stand for and what does it do? - CORRECT ANSWER Bit. Error. Ratio.
Overall measure of data quality of the received bit stream.
Consequences of BER (2 things). - CORRECT ANSWER 1.) Video: picture fails
2.) Data: loss of dial tone
What is the max length of a ground wire? - CORRECT ANSWER 20 feet (want the wire
as short as possible).
What causes high BER (3 things)? - CORRECT ANSWER 1.) Ingress: poor connections
2.) Distortion: undesired change in electrical signal
3.) Noise: unwanted disturbance to a desired signal
What is the desired BER level? - CORRECT ANSWER 1.0E-9
What does MER stand for? - CORRECT ANSWER Modulation. Error. Ratio.
How many channels can go into a QAM? - CORRECT ANSWER 8-12.
