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Chapter 1 Transmission

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Technician
eric rinehart
Quiz by eric rinehart, updated more than 1 year ago More Less
eric rinehart
Created by eric rinehart almost 10 years ago
eric rinehart
Copied by eric rinehart almost 10 years ago
eric rinehart
Copied by eric rinehart almost 10 years ago
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Resource summary

Question 1

Question
Widening or spreading out of modes in a light pulse as it progresses along the optical fiber
Answer
  • Dispersion
  • Core
  • Photons
  • Modal Bandwidth

Question 2

Question
What is the information carrying capacity of a system
Answer
  • Bandwidth
  • Megabit
  • Megahertz
  • Decibel

Question 3

Question
This is a result from different optical fiber lengths in multimode fiber
Answer
  • Overfill Launch
  • Modal Dispersion
  • Modal Bandwidth

Question 4

Question
Why is copper a preferred conductor (select all correct)
Answer
  • Economical
  • Offers less resitance
  • Readily available
  • Easy to produce

Question 5

Question
Humans can hear in what frequency range
Answer
  • 20-20,000Hz
  • 20-20,000MHz
  • 20-2,000Hz
  • 20-2,000MHz

Question 6

Question
What is the movement of information in the form of electrical or optical signals from one point to another through a transport medium
Answer
  • Transmission
  • Signal Transfer
  • Attenuation
  • Propagation Delay

Question 7

Question
What does OSHA have the authority to do (select all correct)
Answer
  • Develop, publish & enforce safety regulations
  • Shut down unsafe job site
  • Levy fines against individuals and companies
  • confiscate tools and equipment

Question 8

Question
1 cycle in 1 second = ?
Answer
  • 1Hz
  • 100Hz
  • 10Hz
  • 1MHz

Question 9

Question
Which transmission method transmits a signal in one direction only
Answer
  • Simplex
  • Full Duplex
  • Half Duplex

Question 10

Question
What is the measure of analog signal strength
Answer
  • Bit
  • Bel
  • Volt
  • Watt

Question 11

Question
___________ are not dependent on ITS installers
Answer
  • Customers
  • Employees
  • IT Professionals

Question 12

Question
What the 3 distinct ways in which others perceive and employee (select all correct)
Answer
  • Body language
  • Tone of voice
  • Choice of words
  • Facial expressions

Question 13

Question
Tone of voice is ____% of communication perceptions
Answer
  • 7%
  • 38%
  • 55%

Question 14

Question
Which method transmits in either direction but in only 1 direction at a time
Answer
  • Simplex
  • Half duplex
  • Full duplex

Question 15

Question
This is a property of an electrical force field built around a conductor that opposes and changes in current flow in a circuit
Answer
  • Inductance
  • Capacitance
  • Resistance
  • Impedance

Question 16

Question
Words are _____% of communication perceptions
Answer
  • 7%
  • 38%
  • 55%

Question 17

Question
What refers to the amount of information that can be transported over the media
Answer
  • Megahertz
  • Megabit
  • Decibel

Question 18

Question
Increasing the length of fiber or wavelength of the light source will decrease bandwidth
Answer
  • True
  • False

Question 19

Question
What is the basic unit of inductance
Answer
  • Henry
  • Watt
  • Farad
  • Ohm

Question 20

Question
This is the property of conductors that allows storage of electric charges when potential differences exist between conductors
Answer
  • Capacitance
  • Inductance
  • Resistance
  • Impedance

Question 21

Question
Body language is ______% of communication perceptions
Answer
  • 7%
  • 38%
  • 55%

Question 22

Question
Capacitance is measured in ________
Answer
  • Farads
  • Henry
  • Ohm
  • Watts

Question 23

Question
What describes the amount of information a fiber is capable of transporting
Answer
  • Modal Bandwidth
  • Dispersion
  • Megahertz

Question 24

Question
Which method transmits a signal in both directions at the same time
Answer
  • Full duplex
  • Half duplex
  • Simplex

Question 25

Question
What is the total opposition to current flow
Answer
  • Impedance
  • Capacitance
  • Resistance
  • Inductance

Question 26

Question
What is the basic unit of digital information
Answer
  • bit
  • megabit
  • bel

Question 27

Question
True power is measured in ______
Answer
  • Watts
  • Volts
  • Amps
  • Decibels

Question 28

Question
Measure of signal loss resulting from the insertion of component, link or channel between transmitter and receiver (often referred to as attenuation)
Answer
  • Crosstalk
  • Return loss
  • Delay skew
  • Insertion loss

Question 29

Question
All electrical activity produces electric & magnetic fields
Answer
  • True
  • False

Question 30

Question
What quantifies the bandwidth of a cabling system in a frequency range
Answer
  • megahertz
  • megabit
  • decibel

Question 31

Question
What device converts a digital signal into 2 distinctive analog frequencies
Answer
  • modem
  • codec

Question 32

Question
What is the ratio expressed in decibels of the power of the outgoing signal to the power of the reflected signal
Answer
  • Return loss
  • Insertion loss
  • Crosstalk
  • Delay skew

Question 33

Question
This is the unwanted transfer of a signal's EM energy from one or more circuits to other circuits
Answer
  • Crosstalk
  • Delay Skew
  • Return Loss
  • Insertion Loss

Question 34

Question
Test equipment uses what to determine the length of a cable
Answer
  • Crosstalk
  • NVP (nominal velocity of propagation)
  • Insertion Loss
  • Propagation Delay

Question 35

Question
What device converts analog data, from a video device, to a digital signal
Answer
  • modem
  • codec

Question 36

Question
Time for a signal to be transmitted from one end to the other
Answer
  • Crosstalk
  • Delay Skew
  • Propagation Delay
  • Insertion Loss

Question 37

Question
Difference in propagation delay between slowest & fastest pairs within same cable sheath
Answer
  • delay skew
  • crosstalk
  • insertion loss
  • return loss

Question 38

Question
What is the signal range for POTS
Answer
  • 20Hz-20,000Hz
  • 300Hz-3400Hz
  • 300MHz-3400MHz

Question 39

Question
To confine the light within the core by creating a reflective boundary is the purpose of the _______
Answer
  • cladding
  • buffer
  • acrylate
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