Description : Optical amplifiers use a ____________________ laser.
Last Answer : pump
Description : SONET stands for ____________________ Optical Network.
Last Answer : Synchronous
Description : For safety, you should never ____________________ at the end of an optical fiber unless you know it is not connected to a light source.
Last Answer : look
Description : The optical fiber is not free to move around in a ____________________ cable.
Last Answer : tight-buffer
Last Answer : loose-tube
Description : With optical fiber, ____________________ light is more common than visible light.
Last Answer : infrared
Description : Optical fiber relies on total ____________________ reflection.
Last Answer : internal
Description : Optical fibers for telecommunications are typically about _____ mils thick and consists of a glass core, a glass cladding of lower index of refraction, and a protective coating ∙ a. 5 ∙ b. 6 ∙ c. 7 ∙ d. 8
Last Answer : ∙ a. 5
Description : An increase in light intensity produces fast optic switching due to ∙ a. Increase in index of glass ∙ b. Amplification of optical signal ∙ c. High gain ∙ d. Photoconductivity
Last Answer : b. Amplification of optical signal
Description : Which is not a possible cause of optical fiber loss? ∙ a. Impurities ∙ b. Glass attenuation ∙ c. Stepped index operation ∙ d. Microbending
Last Answer : ∙ c. Stepped index operation
Description : The ultrapure glass used to manufacture optical fibers is approximately ___pure ∙ a. 99.9 % ∙ b. 99.99 % ∙ c. 99.999 % ∙ d. 99.9999 %
Last Answer : d. 99.9999 %
Description : A Soliton is a: a. defect in the glass b. type of particle c. type of pulse d. type of optical network
Last Answer : c. type of pulse
Description : FDDI systems use two ____________________ rings to carry signals.
Last Answer : token
Description : SONET does not use bit ____________________ to synchronize two digital signals.
Last Answer : stuffing
Description : In SONET, SPE stands for synchronous payload ____________________.
Last Answer : envelope
Description : SONET frame rows contain path overhead and ____________________ overhead.
Last Answer : transport
Description : The number of path overhead bytes in a SONET frame row is ____________________.
Last Answer : 1
Description : The total number of overhead bytes in a SONET frame row is ____________________.
Last Answer : 4
Description : The number of rows in a SONET frame is ____________________.
Last Answer : 9
Description : The number of bytes in the payload of a SONET frame is ____________________.
Last Answer : 774
Description : The number of bytes in a SONET frame is ____________________.
Last Answer : 810
Description : SONET frames have considerably more ____________________ than do DS frames for information about signal routing and setup.
Last Answer : overhead
Description : The data rate of an FDDI system is ____________________ bps.
Last Answer : 100 M
Description : FDDI uses ____________________ mode cables.
Last Answer : multi
Description : Each ____________________ in an FDDI system acts as a regenerative repeater.
Last Answer : node
Description : The two rings of an FDDI system carry data in ____________________ directions.
Last Answer : opposite
Description : SONET uses a ____________________ to denote the starting position of an information frame.
Last Answer : pointer
Description : The OC-1 line rate is ____________________ Mbps.
Last Answer : v51.84
Description : Dense ____________________ allows many different wavelengths of light to share a cable.
Last Answer : WDM
Description : FDDI stands for Fiber ____________________ Data Interface.
Last Answer : Distributed
Description : WDM stands for ____________________-division multiplexing.
Last Answer : Wavelength
Description : SDH stands for Synchronous Data ____________________.
Last Answer : Hierarchy
Description : FITL stands for Fiber In The ____________________.
Last Answer : Loop
Description : FTTC stands for Fiber To The ____________________.
Last Answer : Curb
Description : A ____________________ diode is the usual light detector for single-mode
Last Answer : PIN
Description : The quantum of light is called the ____________________.
Last Answer : photon
Description : A ____________________ diode is the usual light source for single-mode cable.
Last Answer : laser
Description : Good connections are more critical with ____________________-mode fiber.
Last Answer : single
Description : A ____________________ is a short length of fiber that carries the light away from the source
Last Answer : pigtail
Description : Dispersion can be expressed in units of ____________________ rather than
Last Answer : time
Description : For laser diodes, the term ____________________ is used instead of bandwidth.
Last Answer : linewidth
Description : In multimode fiber, ____________________ index has less dispersion than step index.
Last Answer : graded
Description : Chromatic dispersion is also called ____________________ dispersion.
Last Answer : intramodal
Description : The numerical aperture is the ____________________ of the angle of
Last Answer : sine
Description : An electron-volt is a measure of ____________________
Last Answer : energy
Description : The ____________________ angle is where refraction changes to reflection.
Last Answer : : critical
Description : The core is surrounded by the ____________________.
Last Answer : cladding
Description : In the core, the angle of incidence equals the angle of ____________________
Last Answer : reflection
Description : Which of the following is not a part of the optical spectrum? ∙ A. infrared ∙ B. ultraviolet ∙ C. visible color ∙ D. x-rays
Last Answer : ∙ D. x-rays
Description : The minimum optical power a light detector can receive and still produce a usable electrical output signal. ∙ A. light responsivity ∙ B. light sensitivity ∙ C. light collectivity ∙ D. illumination
Last Answer : B. light sensitivity