Q.1
Is a machine that makes powerful single color light
  • fiber optic signals
  • electromagnetic signal (radio waves)
  • laser
  • fiber optic cable
Q.2
Which is the Snell's law ?
  • y = ab + c
  • n1 = n2 sin ϴ2
  • n1 sin ϴ1 = n2 sin ϴ2
  • sin ϴ1 = sin ϴ2
Q.3
From the innermost portion moving outward, the order of fiber-optic cable elements are _____.
  • glass or plastic core, cladding, buff er, sheath
  • glass or plastic core, sheath, buff er, cladding
  • glass or plastic core, buff er, cladding, sheath
  • glass or plastic core, buffer, sheath, cladding
Q.4
Major causes of attenuation in fiber-optic cable can be characterized as scattering, dispersion, extrinsic losses, and _____.
  • Crosstalk
  • Interference
  • Fresnel reflection loss
  • Magnetic Induction
Q.5
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.
Q.6
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
Q.7
Information and data that are sent over glass or plastic cables using light
  • fiber optic signals
  • electromagnetic signal
  • laser
  • fiber optic cable
Q.8
Signals that travel through the air without wires.
  • fiber optic signals
  • electromagnetic signal
  • laser
  • fiber optic cable
Q.9
Is the glass or plastic cable light is sent through in fiber optics.
  • fiber optic signals
  • electromagnetic signal (radio waves)
  • laser
  • fiber optic cable
Q.10
The signals sent in fiber optics are numbers coded into a signal that looks like a series of steps.
  • total internal reflection
  • digital
  • laser
  • fiber optic cable
Q.11
A(n) _____ wave is a form of energy that behaves like a wave and can travel through a vacuum.
  • radio
  • sound
  • surface
  • electromagnetic
Q.12
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
Q.13
Fiber-optic cable uses _____ instead of electrical energy to transmit data.
  • Radio Waves
  • Microwaves
  • Light Pulses
  • Satellite Transmissions
Q.14
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
Q.15
Classifications of fiber-optic cable based on the design of the cable core are _____ and _____.
  • graded-index, step-index
  • step-index, single-mode
  • single-mode, graded-index
  • multimode, single-mode
Q.16
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
Q.17
Information and data that are sent over copper or metal wires using electricity
  • encode
  • transmit
  • decode
  • electrical signal
Q.18
To read or interpret information. When you read a book
  • encode
  • transmit
  • decode
  • electrical signal
Q.19
To send a message. When you hit send or post for a text message.
  • encode
  • transmit
  • decode
  • electrical signal
Q.20
To create a message in a code. Typing or writing a message is an example.
  • encode
  • transmit
  • decode
  • electrical signal
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