eric rinehart
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Technician

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eric rinehart
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eric rinehart
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Chapter 1 Transmission

Question 1 of 39

1

Widening or spreading out of modes in a light pulse as it progresses along the optical fiber

Select one of the following:

  • Dispersion

  • Core

  • Photons

  • Modal Bandwidth

Explanation

Question 2 of 39

1

What is the information carrying capacity of a system

Select one of the following:

  • Bandwidth

  • Megabit

  • Megahertz

  • Decibel

Explanation

Question 3 of 39

1

This is a result from different optical fiber lengths in multimode fiber

Select one of the following:

  • Overfill Launch

  • Modal Dispersion

  • Modal Bandwidth

Explanation

Question 4 of 39

1

Why is copper a preferred conductor (select all correct)

Select one or more of the following:

  • Economical

  • Offers less resitance

  • Readily available

  • Easy to produce

Explanation

Question 5 of 39

1

Humans can hear in what frequency range

Select one of the following:

  • 20-20,000Hz

  • 20-20,000MHz

  • 20-2,000Hz

  • 20-2,000MHz

Explanation

Question 6 of 39

1

What is the movement of information in the form of electrical or optical signals from one point to another through a transport medium

Select one of the following:

  • Transmission

  • Signal Transfer

  • Attenuation

  • Propagation Delay

Explanation

Question 7 of 39

1

What does OSHA have the authority to do (select all correct)

Select one or more of the following:

  • Develop, publish & enforce safety regulations

  • Shut down unsafe job site

  • Levy fines against individuals and companies

  • confiscate tools and equipment

Explanation

Question 8 of 39

1

1 cycle in 1 second = ?

Select one of the following:

  • 1Hz

  • 100Hz

  • 10Hz

  • 1MHz

Explanation

Question 9 of 39

1

Which transmission method transmits a signal in one direction only

Select one of the following:

  • Simplex

  • Full Duplex

  • Half Duplex

Explanation

Question 10 of 39

1

What is the measure of analog signal strength

Select one of the following:

  • Bit

  • Bel

  • Volt

  • Watt

Explanation

Question 11 of 39

1

___________ are not dependent on ITS installers

Select one of the following:

  • Customers

  • Employees

  • IT Professionals

Explanation

Question 12 of 39

1

What the 3 distinct ways in which others perceive and employee (select all correct)

Select one or more of the following:

  • Body language

  • Tone of voice

  • Choice of words

  • Facial expressions

Explanation

Question 13 of 39

1

Tone of voice is ____% of communication perceptions

Select one of the following:

  • 7%

  • 38%

  • 55%

Explanation

Question 14 of 39

1

Which method transmits in either direction but in only 1 direction at a time

Select one of the following:

  • Simplex

  • Half duplex

  • Full duplex

Explanation

Question 15 of 39

1

This is a property of an electrical force field built around a conductor that opposes and changes in current flow in a circuit

Select one of the following:

  • Inductance

  • Capacitance

  • Resistance

  • Impedance

Explanation

Question 16 of 39

1

Words are _____% of communication perceptions

Select one of the following:

  • 7%

  • 38%

  • 55%

Explanation

Question 17 of 39

1

What refers to the amount of information that can be transported over the media

Select one of the following:

  • Megahertz

  • Megabit

  • Decibel

Explanation

Question 18 of 39

1

Increasing the length of fiber or wavelength of the light source will decrease bandwidth

Select one of the following:

  • True
  • False

Explanation

Question 19 of 39

1

What is the basic unit of inductance

Select one of the following:

  • Henry

  • Watt

  • Farad

  • Ohm

Explanation

Question 20 of 39

1

This is the property of conductors that allows storage of electric charges when potential differences exist between conductors

Select one of the following:

  • Capacitance

  • Inductance

  • Resistance

  • Impedance

Explanation

Question 21 of 39

1

Body language is ______% of communication perceptions

Select one of the following:

  • 7%

  • 38%

  • 55%

Explanation

Question 22 of 39

1

Capacitance is measured in ________

Select one of the following:

  • Farads

  • Henry

  • Ohm

  • Watts

Explanation

Question 23 of 39

1

What describes the amount of information a fiber is capable of transporting

Select one of the following:

  • Modal Bandwidth

  • Dispersion

  • Megahertz

Explanation

Question 24 of 39

1

Which method transmits a signal in both directions at the same time

Select one of the following:

  • Full duplex

  • Half duplex

  • Simplex

Explanation

Question 25 of 39

1

What is the total opposition to current flow

Select one of the following:

  • Impedance

  • Capacitance

  • Resistance

  • Inductance

Explanation

Question 26 of 39

1

What is the basic unit of digital information

Select one of the following:

  • bit

  • megabit

  • bel

Explanation

Question 27 of 39

1

True power is measured in ______

Select one of the following:

  • Watts

  • Volts

  • Amps

  • Decibels

Explanation

Question 28 of 39

1

Measure of signal loss resulting from the insertion of component, link or channel between transmitter and receiver (often referred to as attenuation)

Select one of the following:

  • Crosstalk

  • Return loss

  • Delay skew

  • Insertion loss

Explanation

Question 29 of 39

1

All electrical activity produces electric & magnetic fields

Select one of the following:

  • True
  • False

Explanation

Question 30 of 39

1

What quantifies the bandwidth of a cabling system in a frequency range

Select one of the following:

  • megahertz

  • megabit

  • decibel

Explanation

Question 31 of 39

1

What device converts a digital signal into 2 distinctive analog frequencies

Select one of the following:

  • modem

  • codec

Explanation

Question 32 of 39

1

What is the ratio expressed in decibels of the power of the outgoing signal to the power of the reflected signal

Select one of the following:

  • Return loss

  • Insertion loss

  • Crosstalk

  • Delay skew

Explanation

Question 33 of 39

1

This is the unwanted transfer of a signal's EM energy from one or more circuits to other circuits

Select one of the following:

  • Crosstalk

  • Delay Skew

  • Return Loss

  • Insertion Loss

Explanation

Question 34 of 39

1

Test equipment uses what to determine the length of a cable

Select one of the following:

  • Crosstalk

  • NVP (nominal velocity of propagation)

  • Insertion Loss

  • Propagation Delay

Explanation

Question 35 of 39

1

What device converts analog data, from a video device, to a digital signal

Select one of the following:

  • modem

  • codec

Explanation

Question 36 of 39

1

Time for a signal to be transmitted from one end to the other

Select one of the following:

  • Crosstalk

  • Delay Skew

  • Propagation Delay

  • Insertion Loss

Explanation

Question 37 of 39

1

Difference in propagation delay between slowest & fastest pairs within same cable sheath

Select one of the following:

  • delay skew

  • crosstalk

  • insertion loss

  • return loss

Explanation

Question 38 of 39

1

What is the signal range for POTS

Select one of the following:

  • 20Hz-20,000Hz

  • 300Hz-3400Hz

  • 300MHz-3400MHz

Explanation

Question 39 of 39

1

To confine the light within the core by creating a reflective boundary is the purpose of the _______

Select one of the following:

  • cladding

  • buffer

  • acrylate

Explanation

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