Description : The two rings of an FDDI system carry data in ____________________ directions.
Last Answer : opposite
Description : FDDI stands for Fiber ____________________ Data Interface.
Last Answer : Distributed
Description : Each ____________________ in an FDDI system acts as a regenerative repeater.
Last Answer : node
Description : FDDI uses ____________________ mode cables.
Last Answer : multi
Description : FDDI systems use two ____________________ rings to carry signals.
Last Answer : token
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 : The OC-1 line rate is ____________________ Mbps.
Last Answer : v51.84
Description : SDH stands for Synchronous Data ____________________.
Last Answer : Hierarchy
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 : 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 : SONET does not use bit ____________________ to synchronize two digital signals.
Last Answer : stuffing
Description : Dense ____________________ allows many different wavelengths of light to share a cable.
Last Answer : WDM
Description : Optical amplifiers use a ____________________ laser.
Last Answer : pump
Description : Optical amplifiers use ____________________-doped glass.
Last Answer : erbium
Description : SONET stands for ____________________ Optical Network.
Last Answer : Synchronous
Description : WDM stands for ____________________-division multiplexing.
Last Answer : Wavelength
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 : The three major groups of the optical system are ∙ A. the components, the data rate and the response time ∙ B. the source, the link and the receiver ∙ C. the transmitter, the cable and the receiver ∙ D. the source, the link and the detector
Last Answer : B. the source, the link and the receiver
Description : ECE Board Exam March 1996 What is the transmission rate of a system for transmitting the output of a microcomputer to a line printer operating at a speed of 30 lines/minute? Assume that the line printer has 8 bits ... and prints out 80 characters/line. A. 800 bps B. 400 bps C. 320 bps D. 640 bps
Last Answer : C. 320 bps
Description : . The product of the bit rate and distance of a fiber-optic system is 2 Gbits-km/s. What is the maximum rate at 5 km? ∙ A. 100 Mbits/s ∙ B. 200 Mbits/s ∙ C. 400 Mbits/s ∙ D. 1000 Gbits/s
Last Answer : C. 400 Mbits/s
Description : The product of the bit rate and distance of a fiber-optic system is 2 Gbits km/s. What is the maximum rate at 5 km? ∙ a. 100 Mbits/s ∙ b. 200 Mbits/s ∙ c. 400 Mbits/s ∙ d. 1000 Gbits/s
Last Answer : c. 400 Mbits/s