Optical Technology
Get
this solution : mail to- help@aidlo.com
Assignment A
Q1: What is the structure of an Optical
Fiber? How does light propagate along a fiber?
Q2: Discuss the Signal Loss or attenuation
mechanism in a fiber. What and to what degree does a signal get distorted as it
travels along a fiber?
Q3: Discuss the differences between LEDs
and LASER. Also discuss the properties that makes the LASER better than LEDs.
Q4: Discuss the implementation of typical
WDM network and also discuss its various compenets in detail.
Q5: Discuss the four possible applications
of optical amplifier. Of the various amplifiers types, which amplifier is the
best and why?
Assignment - B
Q1: Discuss the architecture of SONET and
SDH.Discuss its transmission format and Speeds.
Q2: Discuss Inter symbol Interfernce and
Crosstalk in Optical Fibers.
Q3: Splices are permanent Joints and
Connectors are temporary Joints.
Discuss the various types and the signal
loss of each type of Permanent Joints and Connectors.
Case
Study
Two SONET rings need to be interconnected
at two mutual nodes in order to ensure redundant paths under failure
conditions. Draw the interconnection between two bi-directional line-switched
(BLSR) SONET rings showing the primary and secondary path setups that designate
the signal flows under normal and failure conditions. In designing the
interface, consider the following possible failure conditions of two mutual
nodes:
a) Failure of a transmitter or receiver in
one of the nodes.
b) Failure of an entire node
c) A fiber break in the link between the
two nodes.
Assignment
C
Q1. The 3-D shape of an Optical Fiber is
a. A cylinder rod
b. Rectangular
c. Square
d. Circle
Q2. The waves that travels through the
fiber is
a. Electrical Wanes
b. Radio Waves
c. Light Waves
d. None of the above
Q3. Optical fiber are made up of
a. Sand & Glass
b. Conductor
c. Glass and Plastic
d. None of the Above
Q4. "Bare fibers" are having
protection Sheath
a. Yes
b. No
c. Not sure
d. There is no such term
Q5. Can fibers be bent at right angles?
a. Yes
b. No
c. Not sure
d. There is no such term
Q6. The principle on which the optical
fiber works is:
a. Total Internal Reflection
b. Critical Angle of Incidence
c. Angle of Inciddence
d. None of the Above
Q7. Transmission media are usually
categorized as_______.
a.
fixed
or unfixed
b.
guided
or unguided
c.
determinate
or indeterminate
d.
metallic
or nonmetallic
Q8. Transmission media lie below the __________
layer.
a.
physical
b.
network
c.
transport
d.
application
Q9. ________cable consists of an inner
copper core and a second conducting outer sheath.
a.
Twisted-pair
b.
Coaxial
c.
Fiber-optic
d.
Shielded
twisted-pair
Q10. In fiber optics, the signal is _______
waves.
a.
light
b.
radio
c.
infrared
d.
very
low-frequency
Q11. Which of the following primarily uses
guided media?
a.
cellular
telephone system
b.
local
telephone system
c.
satellite
communications
d.
radio
broadcasting
Q12. Which of the following is not a guided
medium?
a.
twisted-pair
cable
b.
coaxial
cable
c.
fiber-optic
cable
d.
atmosphere
Q13. What is the major factor that makes
coaxial cable less susceptible to noise than twisted-pair cable?
a.
inner
conductor
b.
diameter
of cable
c.
outer
conductor
d.
insulating
material
Q14. In an optical fiber, the inner core is
the ________cladding.
a.
denser
than
b.
less
dense than
c.
the
same density as
d.
another
name for
Q15. The inner core of an optical fiber is
in _________composition.
a) glass or plastic
b) copper
c) bimetallic
d) liquid
Q16. When a beam of light travels through
media of two different densities, if the angle of incidence is greater than the
critical angle, ___________occurs.
a.
reflection
b.
refraction
c.
incidence
d.
criticism
Q17. When the angle of incidence is ___________
the critical angle, the light beam bends along the interface
a.
more
than
b.
less
than
c.
equal
to
d.
none
of the above
Q18. Signals with a frequency below 2 MHz
use _______propagation.
a.
ground
b.
sky
c.
line-of-sight
d.
none
of the above
Q19. _________cable consists of two
insulated copper wires twisted together.
a.
Coaxial
b.
Fiber-optic
c.
Twisted-pair
d.
none
of the above
Q20. _________cable is used for voice and
data communications.
a.
Coaxial
b.
Fiber-optic
c.
Twisted-pair
d.
none
of the above
Q21. ________cable can carry signals of
higher frequency ranges than ____cable.
a.
Twisted-pair;
fiber-optic
b.
Coaxial;
fiber-optic
c.
Coaxial;
twisted-pair
d.
none
of the above
Q22. _____cables are composed of a glass or
plastic inner core surrounded by cladding, all encased in an outside jacket.
a.
Coaxial
b.
Fiber-optic
c.
Twisted-pair
d.
none
of the above
Q23. ______cables carry data signals in the
form of light.
a.
Coaxial
b.
Fiber-optic
c.
Twisted-pair
d.
none
of the above.
Q24. Transmission media are usually
categorized as
a.
Fixed
or unfixed
b.
Guided
or unguided
c.
Determinate
or indeterminate
d.
Metallic
or nonmetallic
Q25. Transmission media are closest to the ______layer.
a.
Physical
b.
Network
c.
Transport
d.
Application
Q26. Category 1 UTP cable is most often
used in ______networks.
a.
Fast
Ethernet
b.
Traditional
Ethernet
c.
Infrared
d.
Telephone
Q27. BNC connectors are used by_______cables
a.
UTP
b.
STP
c.
Coaxial
d.
Fiber-optic.
Q28. ________cable consists of an inner
copper core and a second conducting outer sheath.
a.
Twisted-pair
b.
Coaxial
c.
Fiber-optic
d.
Shielded
twisted-pair Dr. Gihan NAGUIB 2
Q29. In fiber optics, the signal source is________waves
a.
Light
b.
Radio
c.
Infrared
d.
Very
low-frequency
Q30. Smoke signals are an example of
communication through_________
a.
A
guided medium
b.
An
unguided medium
c.
A
refractive medium
d.
A
small or large medium
Q31. Which of the following primarily uses
guided media?
a.
Cellular
telephone system
b.
Local
telephone system
c.
Satellite
communications
d.
Radio
broadcasting
Q32. Which of the following is not a guided
medium?
a.
Twisted-pair
cable
b.
Coaxial
cable
c.
Fiber-optic
cable
d.
Atmosphere
Q33. In an environment with many
high-voltage devices, the best transmission medium would be__________
a.
Twisted-pair
cable
b.
Coaxial
cable
c.
Optical
fiber
d.
The
atmosphere
Q34. What is the major factor that makes
coaxial cable less susceptible to noise than twisted-pair cable?
a.
Inner
conductor
b.
Diameter
of cable
c.
Outer
conductor
d.
Insulating
material
Q35. The RG number gives us information
about
a.
Twisted
pairs
b.
Coaxial
cables
c.
Optical
fibers
d.
All
the above
Q36. In an optical fiber, the inner core is
the ___________cladding.
a.
Denser
than
b.
Less
dense than
c.
The
same density as
d.
Another
name for
Q37. The inner core of an optical fiber is
in composition.
a.
Glass
or plastic
b.
Copper
c.
Bimetallic
d.
Liquid
Q39. Optical fibers, unlike wire media, are
highly resistant to
a.
High-frequency
transmission
b.
Low-frequency
transmission
c.
Electromagnetic
interference
d.
Refraction
Q40. When the angle of incidence is __________the
critical angle, the light beam bends along the interface
a.
More
than
b.
Less
than
c.
Equal
to
d.
None
of the above
No comments:
Post a Comment