WorksheetsOptical Newtorks
Total questions: 25
Worksheet time: 13mins
____________ is a multi-functional element of optical network.
Hop
Optical node
Wavelength
Optical attenuation
A signal carried on a dedicated wavelength from source to destination node is known as a ___________
Light path
Light wave
Light node
Light source
___________ is a multi-functional element of optical network.
Hop
Optical node
Wavelength
Optical attenuation
The network structure formed due to the interconnectivity patterns is known as a ____________
Network
Struck
Topology
D-pattern
In the __________ topology, the data generally circulates bi-directionally.
Mesh
Bus
Star
Ring
The ring and star topologies are combined in a ________ configuration.
Mesh
Fringe
Data
Singular
Packet switching is also called as ___________
Frame switching
Cell switching
Trans-switching
Buffer switching
___________ mode is temporary, selective and continuous.
Cell switching
Buffer switching
Burst Switching
Circuit switching
A _______________ is a series of logical connections between the source and destination nodes.
Cell circuit
Attenuation circuit
Virtual circuit
Switched network
____________ refers to the process whereby a node finds one or more paths to possible destinations in a network.
Routing
Framing
Lightning
Cloning
SONET stands for ___________
synchronous optical network
synchronous operational network
stream optical network
shell operational network
In SONET, STS-1 level of electrical signalling has the data rate of _________
51.84 Mbps
155.52 Mbps
2488.320 Mbps
622.080 Mbps
The path layer of SONET is responsible for the movement of a signal _________
from its optical source to its optical destination
across a physical line
across a physical section
back to its optical source
The photonic layer of the SONET is similar to the __________ of OSI model.
network layer
data link layer
physical layer
transport layer
In SONET, each synchronous transfer signal STS-n is composed of __________
2000 frames
4000 frames
8000 frames
16000 frames
Which one of the following is not true about SONET?
frames of lower rate can be synchronously time-division multiplexed into a higher-rate frame
multiplexing is synchronous TDM
all clocks in the network are locked to a master clock
STS-1 provides the data rate of 622.080Mbps
What is SDH?
a) sdh is similar standard to SONET developed by ITU-T
b) c)
d)
synthesized digital hierarchy
synchronous digitized hierarchy
sdh stands for synchronous digital hierarchy and is a similar standard to SONET developed by ITU-T
none of the mentioned
An STS-1 frame is made up of _______ rows
1
9
90
270
An STS-3 frame is made up of ______________ columns
9
90
270
87
ATM uses _______________
asynchronous frequency division multiplexing
asynchronous time division multiplexing
asynchronous space division multiplexing
asynchronous amplitude division multiplexing
ATM can be used for ________
local area network
wide area network
campus area network
networks covering any range
An ATM cell has the payload field of __________
32 bytes
48 bytes
64 bytes
128 bytes
DSL telcos provide which of the following services?
Wired phone access
ISP
Wired phone access and ISP
Network routing and ISP
HFC contains _______
Fiber cable
Coaxial cable
A combination of Fibre cable and Coaxial cable
Twisted Pair Cable
ONT is connected to splitter using _________
High speed fibre cable
HFC
Optical cable
Twisted pair cable
