Hfc - Study guides, Class notes & Summaries
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NCTI FIELD TECH 2 TO 3 PROGRESSION FINAL EXAM 2023 - 2024 100%CORRECT ANSWERS.
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NCTI FIELD TECH 2 TO 3 PROGRESSION FINAL EXAM 2023 - 2024 100%CORRECT ANSWERS. 
What uses the 2.4-GHz band and runs at 54 Mbps? 
802.11g 
What is one reason why broadband cable operators install fiber-optic cable in 
stages instead of changing the infrastructure all at once? 
Changing the infrastructure all at once would cause too many service disruptions. 
What is the difference between the fiber-to-the-node (FTTN) and fiber-to-the-curb 
(FTTC) topologies? 
An FTTC is allowed a smaller number o...
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UPDATED EPA 608 QUIZLET (2023) questions with correct answers
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the state of the refrigerant entering the metering device is? - Answer A subcooled high pressure liquid. 
 
what type of refrigerant is used in VERY high-pressure appliances? - Answer R-503 
 
what type of refrigerant is used in MEDIUM pressure appliances? - Answer R-500 
 
what type of refrigerant is used in HIGH pressure appliances? - Answer R-410A and R-22 
 
what device is located at the END of the liquid line? - Answer The expansion device. 
 
what type of refrigerants are the LEA...
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Progression: Maintenance Tech I - II Conventional: Exam Review Answered.
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Progression: Maintenance Tech I - II Conventional: Exam 
 
In the tree-and-branch architecture, how is the downstream signal from the trunk fed to the distribution branches? 
 
 
What is a common solution when congestion from modem activity and traffic becomes unacceptable in a hybrid fiber/coax (HFC) network? 
 
What technologies are defined in DOCSIS 4.0 to help sustain the hybrid fiber/coax (HFC) network infrastructure for several more years? 
 
How can a less-experienced technician identi...
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Progression: Construction Coordinator I - II Exam Answered Correctly.
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Progression: Construction Coordinator I - II Exam Answered Correctly. 
 
A chain trencher 
 
A return path sweep-and-alignment system is used to adjust which of the following? 
 
Anomalies, such as echoes and blind spots, can hide cable faults or cause a technician to misinterpret the signature of a time domain reflectometer (TDR) waveform. What causes an echo on a waveform TDR? 
 
As the RF signal travels on the coaxial cable, one portion of the signal may be attenuated more than the others. ...
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Spectrum Field Tech Questions and Answers 100% Pass
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Spectrum Field Tech Questions and Answers 100% Pass Current/ amperage Flow or movement of electric charges 
Resistor a passive two-terminal material that impedes the flow of current 
What is the most common workplace hazard involving electricity? Electrical shocks 
What is minimum approach distance? The shortest safe distance to keep from energized conductors 
CATV at the pole 40'' 
CATV at the mid-span 24'' 
CATV at the house 12'' 
Live parts of electric equipment must be guarded against ...
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EPA 608 CORE Exam Questions and Answers (2022/2023) (Verified Answers) Graded A+
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EPA 608 CORE Exam Questions and Answers (2022/2023) 
(Verified Answers) Graded A+ 
What characteristic or characteristics of CFCs make them more likely than other 
chlorine compounds to reach the stratosphere? Dont disolve iin water 
Each chlorine atom in the stratosphere can destroy how many ozone molecules? 
100,000 ozone molecules 
Which refrigerant contains a CFC? 
R500, R12, R113 or R11? Theyre all CFC's 
HYDROCHLORIC FLORICCARBON (HCFC) refrigerant contain? Hydrogen, 
chlorine, flouri...
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ODP test Questions and Answers 2023
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ODP test Questions and Answers 2023 
Chlorofluorocarbon (CFC) refrigerants consist of: 
Chlorine, Fluorine, Carbon 
 
 
 
What causes a CFC molecule to break down once it reaches the upper atmosphere? 
Ultraviolet light 
 
 
 
The Ozone layer: 
Reduces ultraviolet radiation. 
 
 
 
Hydrochlorofluorocarbon (HCFC) refrigerants consists of: 
Hydrogen, Chlorine, Fluorine, Carbon. 
 
 
 
Which of the following refrigerants causes the least amount of damage to the ozone layer? 
R-134a 
 
 
 
Are there...
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EPA 608 Core Test Sample Questions and Answers Latest 2023 with complete solution.
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EPA 608 Core Test Sample Questions and Answers Latest 2023 with complete solution. 
As of what date did it become unlawful to release Class 1 and Class II 
refrigerants to the atmosphere? 
a. July 1, 1992 
b. July 1, 1993 
c. November 14, 1994 
d. January 1, 1996 Ans a. July 1, 1992 
What is the ozone layer and why is it important to us on Earth? 
a. Thin layer of R-22 in the atmosphere that filters UV. 
b. Protective shield for Earth from the sun's harmful ultraviolent (UV) 
rays in the strato...
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HFC Designer I – II Exam Questions 2024 with 100% correct answers
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HFC Designer I – II Exam Questions 2024 with 100% correct answers
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(Answered) EPA SECTION 608 CORE (2021-2022 revision)
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EPA SECTION 608 CORE (2021-2022 revision) 
A disposable cylinder should be reduced to what pressure before scrapping? 
a. 0 psig 
b. 20 psig 
c. 50 psig 
d. 80 psig 
 
A major system repair is being performed on a R-22 appliance. What CANNOT be done to recharge the appliance? 
a. Add R-22 after the repair is complete. 
b. Retrofit the unit to R-407C. 
c. Use recovered or recycled R-22 from the same 
owner. 
d. Top off the unit with R-410a. 
A refillable cylinder must not be filled above what ...
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