Question 1

The environment for interior installations is usually well controlled. Which of the following is an exposure factor for interior installations?

Accepted Answer

A) Vibrations 
B) Rodents 
C) Chemicals 
D) Water 
A) Vibrations 
B) Rodents 
C) Chemicals 
D) Water A

Question 2

What is optical fiber made of?

Accepted Answer

A) Ultrapure glass 
B) Plastic 
C) Copper 
D) Polymers 
A) Ultrapure glass 
B) Plastic 
C) Copper 
D) Polymers A

Question 3

What is the purpose of an isolator?

Accepted Answer

A) Allows optical power to flow in one direction only 
B) Reduces the received signal level 
C) Used in simplex systems where a single optical signal is divided and sent to several receivers 
D) Combines or divides two or more optical signals 
A) Allows optical power to flow in one direction only 
B) Reduces the received signal level 
C) Used in simplex systems where a single optical signal is divided and sent to several receivers 
D) Combines or divides two or more optical signals A

Question 4

What type of a system typically has high channel density and high bit rate,is highly reliable,incorporates redundant equipment,and involves extensive engineering studies?

Accepted Answer

A) LANs 
B) Long-haul 
C) MANs 
D) WANs 
A) LANs 
B) Long-haul 
C) MANs 
D) WANs

Question 5

What was developed in an effort to overcome pulse dispersion?

Accepted Answer

A) Step-index fibers 
B) Commercial grade fibers 
C) Graded-index fibers 
D) Single-mode fibers 
A) Step-index fibers 
B) Commercial grade fibers 
C) Graded-index fibers 
D) Single-mode fibers

Question 6

Which of the following is a major criteria that affects the choice of fiber type?

Accepted Answer

A) Ease of interconnection 
B) Size of light wavelength 
C) Signal strength 
D) Beamwidth 
A) Ease of interconnection 
B) Size of light wavelength 
C) Signal strength 
D) Beamwidth

Question 7

Which of the following is a composite of light interaction with the atomic structure of the glass and involves the conversion of optical power to heat?

Accepted Answer

A) Scattering 
B) Macrobending 
C) Absorption 
D) Microbending 
A) Scattering 
B) Macrobending 
C) Absorption 
D) Microbending

Question 8

The ____________ specifies the maximum losses that can be tolerated in the fiber system.

Accepted Answer

A) power budget 
B) bit error rate 
C) spectral width test 
D) optical power meter 
A) power budget 
B) bit error rate 
C) spectral width test 
D) optical power meter

Question 9

Where does modal dispersion predominantly occur?

Accepted Answer

A) Multimode fiber 
B) Single-mode fiber 
C) Diode lasers 
D) LEDs 
A) Multimode fiber 
B) Single-mode fiber 
C) Diode lasers 
D) LEDs

Question 10

Since glass is basically inert,what effects of certain environments are not a problem with optical communications?

Accepted Answer

A) Shrinkage 
B) Corrosion 
C) Warping 
D) Expansion 
A) Shrinkage 
B) Corrosion 
C) Warping 
D) Expansion

Question 11

In which of the following would you find plastic fibers?

Accepted Answer

A) Long-haul telecommunications 
B) Robotics 
C) Data networks 
D) Military applications 
A) Long-haul telecommunications 
B) Robotics 
C) Data networks 
D) Military applications

Question 12

Light is emitted from an LED as a result of the recombining of electrons and __________.

Accepted Answer

A) optic fibers 
B) holes 
C) decibels 
D) nanometers 
A) optic fibers 
B) holes 
C) decibels 
D) nanometers

Question 13

Fiber optics has the capacity to carry more ___________.

Accepted Answer

A) multimode fibers 
B) bandwidth 
C) transmitter power 
D) photodiodes 
A) multimode fibers 
B) bandwidth 
C) transmitter power 
D) photodiodes

Question 14

What are the electromagnetic light waves just below the frequencies in the visible spectrum called?

Accepted Answer

A) Fiber optic 
B) Optical 
C) Ultraviolet 
D) Infrared 
A) Fiber optic 
B) Optical 
C) Ultraviolet 
D) Infrared

Question 15

Which of the following defines the broadening of a pulse due to different propagation velocities of the spectral components of the light pulse?

Accepted Answer

A) Polarization mode dispersion 
B) Modal dispersion 
C) Microbending 
D) Chromatic dispersion 
A) Polarization mode dispersion 
B) Modal dispersion 
C) Microbending 
D) Chromatic dispersion

Question 16

__________ is a long-term method in which two fibers are fused or welded together.

Accepted Answer

A) Mechanical splicing 
B) Index matching 
C) Fusion splicing 
D) Connectorization 
A) Mechanical splicing 
B) Index matching 
C) Fusion splicing 
D) Connectorization

Question 17

Visible light striking a prism causes refraction at both air/glass interfaces and separates the light into its various frequencies,which appear as__________.

Accepted Answer

A) fibers 
B) beamwidths 
C) colors 
D) pulses 
A) fibers 
B) beamwidths 
C) colors 
D) pulses

Question 18

What portion of the fiber strand carries the transmitted light?

Accepted Answer

A) Cladding 
B) Core 
C) Protective jacket 
D) Couplings 
A) Cladding 
B) Core 
C) Protective jacket 
D) Couplings

Question 19

The eye can't see fiber-optic communications wavelengths,so there is no pain or awareness of exposure,but what part of the eye can still be exposed and damaged?

Accepted Answer

A) Iris 
B) Retina 
C) Lens 
D) Cornea 
A) Iris 
B) Retina 
C) Lens 
D) Cornea

Question 20

Which of the following is an important characteristic of light detectors?

Accepted Answer

A) Allows repeated matings and unmatings 
B) Less-complex driving circuitry 
C) Optical stabilization 
D) Spectral response 
A) Allows repeated matings and unmatings 
B) Less-complex driving circuitry 
C) Optical stabilization 
D) Spectral response

The environment for interior installations is usually well controlled. Which of the following is an exposure factor for interior installations?

What is optical fiber made of?

What is the purpose of an isolator?

What type of a system typically has high channel density and high bit rate,is highly reliable,incorporates redundant equipment,and involves extensive engineering studies?

What was developed in an effort to overcome pulse dispersion?

Which of the following is a major criteria that affects the choice of fiber type?

Which of the following is a composite of light interaction with the atomic structure of the glass and involves the conversion of optical power to heat?

The ____________ specifies the maximum losses that can be tolerated in the fiber system.

Where does modal dispersion predominantly occur?

Since glass is basically inert,what effects of certain environments are not a problem with optical communications?

In which of the following would you find plastic fibers?

Light is emitted from an LED as a result of the recombining of electrons and __________.

Fiber optics has the capacity to carry more ___________.

What are the electromagnetic light waves just below the frequencies in the visible spectrum called?

Which of the following defines the broadening of a pulse due to different propagation velocities of the spectral components of the light pulse?

__________ is a long-term method in which two fibers are fused or welded together.

Visible light striking a prism causes refraction at both air/glass interfaces and separates the light into its various frequencies,which appear as__________.

What portion of the fiber strand carries the transmitted light?

The eye can't see fiber-optic communications wavelengths,so there is no pain or awareness of exposure,but what part of the eye can still be exposed and damaged?

Which of the following is an important characteristic of light detectors?

Fundamental Communications Concept

Amplitude Modulation

Angle Modulation

Communications Circuits

Transmitters

Receivers

Digital Communications Techniques

Digital Modulation and Demodulation

Telephone Networks

Wireless Communications Systems

Computer Communication and the Internet

Transmission Lines

Wave Propagation

Antennas

Waveguides and Radar

Filters

Exam 16: Fiber Optics

The environment for interior installations is usually well controlled. Which of the following is an exposure factor for interior installations?

What is optical fiber made of?

What is the purpose of an isolator?

What type of a system typically has high channel density and high bit rate,is highly reliable,incorporates redundant equipment,and involves extensive engineering studies?

What was developed in an effort to overcome pulse dispersion?

Which of the following is a major criteria that affects the choice of fiber type?

Which of the following is a composite of light interaction with the atomic structure of the glass and involves the conversion of optical power to heat?

The ____________ specifies the maximum losses that can be tolerated in the fiber system.

Where does modal dispersion predominantly occur?

Since glass is basically inert,what effects of certain environments are not a problem with optical communications?

In which of the following would you find plastic fibers?

Light is emitted from an LED as a result of the recombining of electrons and __________.

Fiber optics has the capacity to carry more ___________.

What are the electromagnetic light waves just below the frequencies in the visible spectrum called?

Which of the following defines the broadening of a pulse due to different propagation velocities of the spectral components of the light pulse?

__________ is a long-term method in which two fibers are fused or welded together.

Visible light striking a prism causes refraction at both air/glass interfaces and separates the light into its various frequencies,which appear as__________.

What portion of the fiber strand carries the transmitted light?

The eye can't see fiber-optic communications wavelengths,so there is no pain or awareness of exposure,but what part of the eye can still be exposed and damaged?

Which of the following is an important characteristic of light detectors?

Fundamental Communications Concept

Amplitude Modulation

Angle Modulation

Communications Circuits

Transmitters

Receivers

Digital Communications Techniques

Digital Modulation and Demodulation

Telephone Networks

Wireless Communications Systems

Computer Communication and the Internet

Transmission Lines

Wave Propagation

Antennas

Waveguides and Radar

Filters