Description : The two rings of an FDDI system carry data in ____________________ directions.
Last Answer : opposite
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 : FDDI stands for Fiber ____________________ Data Interface.
Last Answer : Distributed
Description : SONET does not use bit ____________________ to synchronize two digital signals.
Last Answer : stuffing
Description : Using fiber-optic cable in a telephone system except for the connection to the subscriber’s phone is called: a. FDDI b. FTTC c. FITL d. SONET
Last Answer : b. FTTC
Description : A commonly used fiber-based system for LANs is: a. FDDI b. high-speed Ethernet c. gigabit Ethernet d. all of the above
Last Answer : d. all of the above
Description : FDDI stands for: a. Fiber Digital Data Interface b. Fiber Distributed Data Interface c. Fiber Distribution Delay Interface d. Frequency-Division Data Interface
Last Answer : b. Fiber Distributed Data Interface
Description : Optical amplifiers use a ____________________ laser.
Last Answer : pump
Description : Optical amplifiers use ____________________-doped glass.
Last Answer : erbium
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 : 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 : SONET stands for ____________________ Optical Network.
Last Answer : Synchronous
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 : 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 : 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 : The optical fiber is not free to move around in a ____________________ cable.
Last Answer : tight-buffer
Last Answer : loose-tube
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 : With optical fiber, ____________________ light is more common than visible light.
Last Answer : infrared
Description : Chromatic dispersion is also called ____________________ dispersion.
Last Answer : intramodal
Description : Optical fiber relies on total ____________________ reflection.
Last Answer : internal
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 : A function of an optic isolator ∙ a. Cancels reflective waves ∙ b. Amplifies signal transmitted ∙ c. Filters unnecessary signals ∙ d. All of these
Last Answer : a. Cancels reflective waves
Description : In fiber optics, higher-order mode refers to ∙ a. Cladding boundary at high angle ∙ b. Backscattering electromagnetic signals ∙ c. Diffracting signals ∙ d. All of these
Last Answer : ∙ a. Cladding boundary at high angle
Description : Fiber-optic cables do not: a. carry current b. cause crosstalk c. generate EMI d. all of the above
Description : In FDDI, data normally travel on .................. A) The primary ring B) The Secondary ring C) Both rings D) Neither ring
Last Answer : A) The primary ring