Which factor contributes to signal attenuation?
Noise
Short travel distance
Bandwidth
Network congestion - ANSWER Noise
What is bandwidth?
>The maximum theoretical capacity of a network communication link
>The instantaneous data-sending rate of network data transmission
>The difference between the highest and lowest frequency of data signals
>The length of time for a signal wave to complete one complete cycle - ANSWER >The
maximum theoretical capacity of a network communication link
Which term is defined as the number of cycles a signal completes in one second?
Frequency
Transmission rate
Peak amplitude
Bandwidth - ANSWER Frequency
How is phase defined?
1
,A wave position relative to a reference position
The total data capacity of network transmission
A stage of the pattern of sending and receiving signals
The amount of time a signal needs to finish one cycle - ANSWER A wave position relative
to a reference position
What is the absolute value of a signal's greatest magnitude in proportion to the energy that
it is able to carry?
Peak amplitude
Period
Spread
Delta - ANSWER Peak amplitude
What is one advantage of twisted-pair cables over fiber-optic cables?
They require less skill and experience to install.
They transmit signals over longer distances.
They are less susceptible to electromagnetic interference.
They have higher data transmission rates. - ANSWER They require less skill and experi-
ence to install.
What is one characteristic of coaxial cables?
They use a dielectric insulator to reduce electromagnetic field interference.
They can transmit signals to a maximum of 100 MHz.
They transmit only analog signals.
They make use of light in signal transmission from one point to another. - ANSWER They
use a dielectric insulator to reduce electromagnetic field interference.
2
, What is a characteristic of fiber-optic cables?
They are composed of a core, cladding, a buffer, and a jacket.
They have large diameters and tend to be heavy.
They have four nodes in most cases.
They only carry data over distances of 2-100 meters. - ANSWER They are composed of a
core, cladding, a buffer, and a jacket.
What is one advantage of fiber-optic cables?
Fiber-optic cables can be used in safety-critical places.
Fiber-optic cables can be installed cheaply and quickly.
Fiber-optic cables can be tensioned without resulting in damage.
Fiber-optic cables can be used over mobile communication links. - ANSWER Fiber-optic
cables can be used in safety-critical places.
What is one drawback of fiber-optic cable?
It contains fragile components.
It has high attenuation.
It cannot be used in dangerous places.
It performs poorly over long distances. - ANSWER It contains fragile components.
What is one type of waveform used to transmit electromagnetic signals in wireless media?
Radio waves
Ultraviolet waves
3
Noise
Short travel distance
Bandwidth
Network congestion - ANSWER Noise
What is bandwidth?
>The maximum theoretical capacity of a network communication link
>The instantaneous data-sending rate of network data transmission
>The difference between the highest and lowest frequency of data signals
>The length of time for a signal wave to complete one complete cycle - ANSWER >The
maximum theoretical capacity of a network communication link
Which term is defined as the number of cycles a signal completes in one second?
Frequency
Transmission rate
Peak amplitude
Bandwidth - ANSWER Frequency
How is phase defined?
1
,A wave position relative to a reference position
The total data capacity of network transmission
A stage of the pattern of sending and receiving signals
The amount of time a signal needs to finish one cycle - ANSWER A wave position relative
to a reference position
What is the absolute value of a signal's greatest magnitude in proportion to the energy that
it is able to carry?
Peak amplitude
Period
Spread
Delta - ANSWER Peak amplitude
What is one advantage of twisted-pair cables over fiber-optic cables?
They require less skill and experience to install.
They transmit signals over longer distances.
They are less susceptible to electromagnetic interference.
They have higher data transmission rates. - ANSWER They require less skill and experi-
ence to install.
What is one characteristic of coaxial cables?
They use a dielectric insulator to reduce electromagnetic field interference.
They can transmit signals to a maximum of 100 MHz.
They transmit only analog signals.
They make use of light in signal transmission from one point to another. - ANSWER They
use a dielectric insulator to reduce electromagnetic field interference.
2
, What is a characteristic of fiber-optic cables?
They are composed of a core, cladding, a buffer, and a jacket.
They have large diameters and tend to be heavy.
They have four nodes in most cases.
They only carry data over distances of 2-100 meters. - ANSWER They are composed of a
core, cladding, a buffer, and a jacket.
What is one advantage of fiber-optic cables?
Fiber-optic cables can be used in safety-critical places.
Fiber-optic cables can be installed cheaply and quickly.
Fiber-optic cables can be tensioned without resulting in damage.
Fiber-optic cables can be used over mobile communication links. - ANSWER Fiber-optic
cables can be used in safety-critical places.
What is one drawback of fiber-optic cable?
It contains fragile components.
It has high attenuation.
It cannot be used in dangerous places.
It performs poorly over long distances. - ANSWER It contains fragile components.
What is one type of waveform used to transmit electromagnetic signals in wireless media?
Radio waves
Ultraviolet waves
3
