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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 9 years ago
eric rinehart
Copied by eric rinehart almost 9 years ago
eric rinehart
Copied by eric rinehart almost 9 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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