2026-2027 Exams Includes Frequently Tested Questions
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1. What is reverse polarity? - Correct Answer: TPTP is reversed
2. What is a short circuit? - Correct Answer: Two crossing wires with bare
wire that are touching and conducting
3. What is split pairs? - Correct Answer: line 1 and line 2 are reversed. L1
Blue lands on L2 Orange
4. What does OFDM stand for? - Correct Answer: Orthogonal Frequency
Division Multiplex
5. What does S.A.F.E stand for? - Correct Answer: Stop, Assess, Focus,
Eliminate
6. What is an ISA - Correct Answer: Amplifier
7. Minimum distance from outlet when installing a wall plate? - Correct
Answer: 6"
,8. What does HFC stand for? - Correct Answer: Hybrid Fiber Coax
9. What is FTTP? - Correct Answer: fiber to the premises
10.What is FTTH? - Correct Answer: Fiber to the home
11.What does CNR stand for - Correct Answer: Carrier to Noise Ratio
12.How many hertz is a gigahertz - Correct Answer: 1,000,000,000
13.What range is our upstream TX? - Correct Answer: 5mhz-42mhz
14.What range is our downstream RX - Correct Answer: 55mhz-865mhz
15.What is the minimum MER for QAM - Correct Answer: 32
16.What does FEC mean? - Correct Answer: Forward Error Correction
17.What is the cliff effect - Correct Answer: demonstrates how digital and
analog are affected by system noise signal levels
, 18.What is the highest BER before performance starts to deteriorate? -
Correct Answer: IE-07.5
19.What is HUM modulation? - Correct Answer: The amplitude distortion
of the signal caused by the modulation of the signal with components
20.What is the skin effect? - Correct Answer: where higher frequencies
travel on the outermost layers of the center conductor
21.What are the 2 kinds of grounds required by Safety standards for electrical
systems? - Correct Answer: service and equipment
22.What is CATV? - Correct Answer: Community Antenna Television
23.What does HFC distribute? - Correct Answer: Broadband signals through
a network of various elements
24.What is the FCC? - Correct Answer: The Federal Communications
Commission, which is a federal agency charged with regulating frequencies
25.Per NTCS requirements what is a tv channels bandwidth? - Correct
Answer: 6mhz