Lesson 7 - Communicating With Waves
3 years ago
wcorr1
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20 QuestionsShow answers
  • Question 1
    10 seconds
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    Q. What are Fiber Optics?
    answer choices
    Thin, flexible fibers of glass
    Flexible fibers of glass
    Thin fibers of glass
    Those glow toys
  • Question 2
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    Q. How are Fiber Optics used in everyday life?
    answer choices
    IPads
    iPods
    Cell phones
    Land lines
  • Question 3
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    Q. What is the most prominent use of Fiber Optics today?
    answer choices
    Phones
    Television Screens
    The Internet
    MRI imaging
  • Question 4
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    Q. For what are Fiber Optics mainly used?
    answer choices
    Long distance communication
    Imaging
    Phones
    Downloading Apps
  • Question 5
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    Q. How do Fiber Optics work?
    answer choices
    By connecting and transferring energy
    By remitting and subtracting power from other fiber optics
    By using light pulses to transfer data
    By converting sound waves in to binary code
  • Question 6
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    Q. Are fiber optics used for long or short distance calls?
    answer choices
    Long Distance
    Both
    Short Distance
  • Question 7
    20 seconds
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    Q. How does light travel through the cable?
    answer choices
    Refraction and Reflection
    Refraction only
    Dispersion
    Total Internal Reflection
  • Question 8
    20 seconds
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    Q. What is one benefit of Analog Data Storage?
    answer choices
    Analog signals become distorted over long distances
    Analog systems preserve waves forms
    Analog devices for playback wear out
    Analog systems are less expensive
  • Question 9
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    Q. Find the false statement.
    answer choices
    Digital systems sample the wave form
    Digital files are distorted over long distances
    Digital media is less expensive to produce than analog media
    Digital systems convert waves into a binary code
  • Question 10
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    Q. Which statement is true?
    answer choices
    Digital files of binary code are easy to transmit
    Analog systems convert wave information into a binary code
    Digital recordings sound more like the original
    Analog signals do not distort over long distances
  • Question 11
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    Q. Which of the following increased the efficiency of systems such as TV, telephone, and internet?
    answer choices
    DVD burners
    MP3 players
    Electrical Wires
    Fiber Optics
  • Question 12
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    Q. The person tapping in a signal to send through Morse code is doing what to the message?
    answer choices
    encoding it
    transmiting it
    decoding it
    storing it
  • Question 13
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    Q. Which of the following allows fiber optic cables to transmit data?
    answer choices
    total bending of light
    total dispersion of light
    total internal combustion
    total internal reflection
  • Question 14
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    Q. In fiberoptic cables used to transmit communication data, what does a receiver and decoder do?
    answer choices
    receive the sound signal and convert to binary data
    receive the light signal and convert to binary data
    receive the audio signal and convert to analog data
    receive the direct signal and convert it to analog data
  • Question 15
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    Q. What increases the amount of information transmitted by fiberoptic cables?
    answer choices
    increasing the length
    using plastic instead of glass in the cable
    increasing the number of fibers
    using fewer optical amplifiers along the cable
  • Question 16
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    Q. Why are fiberoptic cables preferred over copper wire in telephone and Internet applications?
    answer choices
    used both indoors and outdoors
    easier to manufacture and install into office buildings
    more flexible and needs no power source
    less sensitive to temperature/electromagnetic interference
  • Question 17
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    Q. Which of the following devices uses laser technology to function?
    answer choices
    USB drive
    DVD player
    computer monitor
    bluetooth headset
  • Question 18
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    Q. When would fiber optics most likely be preferred over radio waves for communication?
    answer choices
    The content of the communication needs to remain secure
    The climate of the area is hot and humid
    There are frequent power outages in the area
    little money available to build the communication system
  • Question 19
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    Q. Which describes an advantage of total internal reflection within an optical fiber?
    answer choices
    It converts electrical signals into optical signals
    allows optical signals to be transmitted along a curved path
    It converts optical signals into electrical signals
    It allows electrical signals to be transmitted along a curve
  • Question 20
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    Q. What has replaced much of the copper circuitry that connected telephone switching stations?
    answer choices
    microelectronics
    tungsten wire
    fiber optic cable
    reinforced plastic
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