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Construction Coordinator 1 to 2 Lesson 9
Terms in this set (10)
When light strikes a medium at an angle less than the critical angle, what happens to the light?
It is reflected
In a fiber-optic cable, what is the purpose of the cladding?
To guide light down the fiber.
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?
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?
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?
The pull-in method.
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?
With an optical mechanical splice.
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?
A reflective star coupler.
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 best represents the progression of fiber-optic network architecture?
Fiber-to-the-feeder (FTTF), fiber-to-the-neighborhood (FTTN), fiber-to-the-curb (FTTC), fiber-to-the-home (FTTH).
What serves as an amplifier in fiber-optic networks, allowing light signals to travel farther while retaining signal strength?
An erbium-doped fiber amplifier (EDFA).
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)?
The industry has invested a lot of money in HFC networks, Data Over Cable Service Interface Specification (DOCISIS), and other systems and devices that are still currently being used, but they are not compatible with ITU and IEEE PON standards.
Sets found in the same folder
Construction Coordinator 1 to 2 Lesson 1
Construction Coordinator 1 to 2 Lesson 2
Construction Coordinator 1 to 2 Lesson 3
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