Eta Fiber Certification Installer Woac Actual Exam Version A Real Exam Questions And Correct Detailed Answers With Rationales|Already Graded A+

ETA Fiber Certification Installer WOAC ACTUAL EXAM VERSION A REAL EXAM QUESTIONS AND CORRECT DETAILED ANSWERS WITH RATIONALES|ALREADY GRADED A+ The class designation for lasers that run at low power levels so that prolonged exposure will not cause eye damage is - ANSWER- Class I Each chemical you use should be accompanied by a/an - ANSWER- Material Safety Data Sheet (MSDS) What is the best practice for disposing of fiber optic waste? - ANSWER- Dispose of all fiber optic waste in debris, sealable containers provided. What year was the first North American fiber optic telephone system installed? - ANSWER- 1977 What is FDDI? - ANSWER- Fiber Distributed Data Interface - connector used to link electronics & fiber transmission LAN systems. Bandwidth can be defined as _________________? - ANSWER- amount of information or data it can carry in a given amount of time. List some advantages of optical fiber cables over copper cables? - ANSWER- Bandwidth, Electromagnetic Immunity, Weight, Safety, Size, Attenuation, Security, Upgradable Fiber optic cables are made of _____________ material and are therefore immune to ________________. - ANSWER- dielectric, EMI the four basic components of a fiber optic link are the: - ANSWER- transmitter, receiver, fiber optic cable, connectors LEDs have a relatively ___________ spectral width, while a laser's spectral width is much _____________. - ANSWER- wide, narrow A ___________ is the light source used with laser optimized multimode fiber. - ANSWER- VCSEL (vertical-cavity surface-emitting laser) The acronym for LASER is? - ANSWER- Light Amplification by Stimulated Emission of Radiation What light source/wavelength is typically utilized in multimode plastic optical fibers? - ANSWER- Visible (650 nm LED) What are the multimode operating wavelengths? - ANSWER- 850nm, 1300nm What light sources are used for multimode transmissions? - ANSWER- LED, VCSEL What are the single mode operating wavelengths? - ANSWER- 1310 nm, 1550 nm, 1625 nm What light source is used for single mode transmissions? - ANSWER- LASER What component in a receiver circuit converts optical signals to electrical energy? - ANSWER- Photodiode Combining two or more wavelengths in a single fiber is an example of? - ANSWER- Multiplexing What are the standard operating wavelengths for single mode and multimode fiber? - ANSWER- 850nm, 1300nm, 1550nm What core sizes are commonly used for SM & MM fiber? - ANSWER- SM - 8-10 μm; MM - 62.5 μm (US), 50 μm (Europe) Define the layers and their characteristics shown below? - ANSWER- Buffer (900 μm), Acrylate Coating (250 μm) Cladding (125 μm), Core (8-10 μm, 50 μm, or 62.5 μm) What does the cladding do in a fiber optic cable? What is it responsible for? - ANSWER- Surrounding the core; provides the refractive index that allow total internal reflection of light traveling in the core. What is the mode? - ANSWER- The potential paths for light to move through the fiber optic. Single mode fiber allows __________ path/s of light. - ANSWER- single Multimode fiber allows ____________ path/s of light. - ANSWER- multiple _______________ is when a light ray bounces off the interface between two materials. - ANSWER- Reflection When a light ray bends when changing speed from one material to another it is called _____________. - ANSWER- refraction