Quiz  /  Optoelectronics Gate & PSU MCQ Questions With Answers

  • 1. 
    When both active and passive devices are integrated on a single chip, in multilayered form, then these devices are known as _____________

  • IP devices
  • IO devices
  • Wavelength converters
  • Optical parametric amplifiers

  • 2. 
    ___________________ is defined as a process by which the wavelength of the transmitted signal is changed without altering the data carried by the signal.

  • Wavelength conversion
  • Attenuation
  • Sigma management
  • Wavelength dispersion

  • 3. 
    Integrated technology for optical devices are developed within optical fiber communication.

  • True
  • False

  • 4. 
    Th e broad classifications of fiber-optic cable based on the diameter of the core are _____ and _____.

  • graded-index, step-index
  • step-index, multimode
  • multimode, single-mode
  • graded-index, multimode

  • 5. 
    What is the most prominent use of Fiber Optics today?

  • Phones
  • Television Screens
  • The Internet
  • MRI imaging

  • 6. 
    A(n) _____ is a device for testing and troubleshooting long runs of fiber-optic cable.

  • tone generator
  • optical time domain reflectometer
  • digital multimeter
  • punch down tool

  • 7. 
    For linear as well as in nonlinear mode _______________ are most important network elements.

  • Optical amplifier
  • Optical detector
  • A/D converter
  • D/A converters

  • 8. 
    Is when light bounces off of the inside of a glass or plastic cable or fiber.

  • total internal reflection
  • electromagnetic signal (radio waves)
  • laser
  • fiber optic cable

  • 9. 
    He device which is used to perform wavelength conversion is called as ___________

  • Attenuator
  • Wavelength Gyrator
  • Wavelength Circulator
  • Wavelength translator

  • 10. 
    Signals that travel through the air without wires.

  • fiber optic signals
  • electromagnetic signal
  • laser
  • fiber optic cable

  • 11. 
    A(n) _____ wave is a form of energy that behaves like a wave and can travel through a vacuum.

  • radio
  • sound
  • surface
  • electromagnetic

  • 12. 
    Is a machine that makes powerful single color light

  • fiber optic signals
  • electromagnetic signal (radio waves)
  • laser
  • fiber optic cable

  • 13. 
    What are the two general types of fiber optic cable found in current networking environments?

  • Red and Green
  • Singlemode and Multimode
  • High-frequency and Low-frequency
  • Narrowband and Wideband

  • 14. 
    True or False: All fiber optic cables have the same type of physical connector?

  • True
  • False

  • 15. 
    How does light travel through the cable?

  • Refraction and Reflection
  • Refraction only
  • Dispersion
  • Total Internal Reflection

  • 16. 
    The ___________ converters cannot process different modulation formats.

  • Shifting
  • Optoelectronic wavelength
  • Opt-circular
  • Magnetic simulating

  • 17. 
    The more advantages optical amplifier is ____________

  • Fiber amplifier
  • Semiconductor amplifier
  • Repeaters
  • Mode hooping amplifier

  • 18. 
    What is the difference between scattering and dispersion?

  • Scattering is the loss of signal strength due to impurities in the core material; dispersion is the distortion of a light wave pattern as it reflects off the core cladding.
  • Scattering is due to the refraction property diff erences in the core material; dispersion occurs when intervening material absorbs some of the signal.
  • Scattering is loss of signal strength due to physical factors outside the core; dispersion is the loss of signal strength due to impurities in the core material.
  • Scattering occurs due to an improper termination; dispersion occurs due to a poorly spliced cable.

  • 19. 
    What does this represent?

  • electromagnetic signal
  • electrical signal
  • fiber optic signal
  • information

  • 20. 
    The optical medium, in case of optical wavelength conversion is ___________

  • Depleted
  • Linear
  • Non-linear
  • Dispersive

  • 21. 
    Information and data that are sent over copper or metal wires using electricity

  • encode
  • transmit
  • decode
  • electrical signal

  • 22. 
    Which of the following is not a benefit of fiber-optic cable over copper-core cable?

  • Increased security
  • Less cost
  • Higher Bandwidth
  • Immune to electromagnetic interference

  • 23. 
    For what are Fiber Optics mainly used?

  • Long distance communication
  • Imaging
  • Phones
  • Downloading Apps

  • 24. 
    ______________ are operated at current beyond normal lasing threshold current, practically.

  • Semiconductor optical amplifier
  • Erbium-doped fiber amplifier
  • Raman fiber amplifier
  • Brillouin fiber amplifier
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