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Worksheetsoptical commuication
Total questions: 15
Worksheet time: 8mins
SONET system can use _________.
STS multiplexers
regenerators
add/drop multiplexers
all of the above
_________ allow insertion and extraction of signals.
ADMs
STS multiplexer/demultiplexers
regenerators
none of the above
_________ is a standard developed by ANSI for fiber-optic networks.
SONET
SDH
either (a) or (b)
neither (a) nor (b)
_________ is a standard developed by ITU-T.
SONET
SDH
either (a) or (b)
neither (a) nor (b)
_________ signal is the optical modulation of an STS-n (or STM-n) signal.
OC-n
TDM-n
FDM-n
none of the above
A _________ is a repeater.
regenerator
ADM
STS multiplexer/demultiplexer
none of the above
A _________ is the end-to-end portion of the network between two STS multiplexers.
section
line
path
none of the above
A _________ is the optical link connecting two neighbor devices.
section
line
path
none of the above
A linear SONET network can be _________.
point-to-point
multipoint
either (a) or (b)
neither (a) nor (b)
Which of the following is used to provide wavelength signal service among the nodes?
a) Regularization
b) Optical enhancing
c) Hopping
d) Pulse breakdown
How many types of hopping are present?
a) Two
b) One
c) Three
d) Four
In the __________ topology, the data generally circulates bi-directionally.
a) Mesh
b) Bus
c) Star
d) Ring
The ring and star topologies are combined in a ________ configuration.
a) Mesh
b) Fringe
c) Data
d) Singular
The ___________ sits at the top of hierarchy of the OSI layer model.
a) Session layer
b) Transport layer
c) Application layer
d) Data link layer
The ____________ controls the dialogs between intelligent devices.
a) Physical layer
b) Transport layer
c) Application layer
d) Session layer
