REP 1- REP 2 EXAM QUESTIONS AND
ANSWERS 100% ACCURATE
Question : When light strikes a medium at an angle less than
the critical angle, what happens to the light?
Correct answer: It is reflected
Question : In a fiber optic cable, what is the purpose of the
cladding?
Correct answer: To guide the light down the fiber
Question : You are planning a fiber optic network and want to
amplify the signal so you can send it farther into the field. At which wavelength must the laser emit?
Correct answer: 1550 nm
Question : It is important to follow safety procedures when
installing and handling fiber optic cable. What should you use to pick up fiber pieces after you splice a cable?
Correct answer: Tweezers
Question : You are doing an aerial installation of fiber optic
cable. When you survey the installation path, you see that the path runs near several short outbuildings and over a series of hedges. Which installation method should you use?
Correct answer: The pull in method
Question : Poor performance in the fiber optic network leads
you to believe that there is a fault in the fiber optic cable and you want to test a section of the network with an optical time domain reflectometer OTDR, How should you connect the OTDR to the fiber optic cable?
Correct answer: With an optical mechanical splice
Question : As you prepare to set up the fiber optic network,
you realize you need a coupler that will allow any of its ports to be used as either input or output. Which coupler should you choose?
Correct answer: A reflective star coupler
Question : As cable companies have expanded their use of
fiber optic cable, they have also brought it closer to the
customer premises, increasing the bandwidth available to customers. Which answer below represents the progression of fiber optic network architecture?
Correct answer: Fiber to the feeder FTTF - Fiber to the
neighborhood FTTN - Fiber to the curb FTTC - and Fiber to the home FTTH
Question : Why is the broadband cable industry developing its
own passive optical network (PON) standard instead of using standards already developed by the International Telecommunication Union (ITU) and the Institute of Electrical and Electronics Engineers (IEEE)
Correct answer: The industry has invested a lot of money in
HFC Networks, Data Over Cable Service Interface Specification, and other systems and devices that are still currently being used, but they are not compatible with ITU and IEEE PON standards.
Question : What serves as an amplifier in fiber optic
networks, allowing light signals to travel farther while retaining signal strength?
Correct answer: EDFA, An erbium-doped fiber amplifier
Question : What is the name of the group that established
standards for the television industry, ensuring a single system would deliver consistent service across the nation?
Correct answer: The National Television System Committee
(NTSC)
Question : What signal modulation technique do cable
operators use to transport digital television signals through the cable network?
Correct answer: QAM Quadrature Amplitude Modulation
Question : What is the major change in enhanced definition
TV (EDTV) that improves picture quality over SDTV
Correct answer: The use of progressive scanning in EDTV
Question : What legislation required all television stations to
switch to digital only broadcasting?