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Which transmission media has the highest transmission speed in a network?
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optical fiber
Bits can be send over guided and unguided media as analog signal by
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digital modulation
Wireless transmission can be done via
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all of the mentioned
Which of the following networks extends a private network across public networks?
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vpn
In the OSI model, as a data packet moves from the lower to the upper layers headers are
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removed
What is the process of examining the frequency content of a signal?
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Spectrum analysis
The amount of data transmitted for a given amount of time is called
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bandwidth
OSI stands for
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open system interconnection
Transmission data rate is decided by
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physical layer
The data link layer takes the packet from ... and encapsulates them into frames for transmission.
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network layer
When 2 or more bits in a data unit has been changed during the transmission, the error is called
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burst error
Amplitude modulation is
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change in frequency
What happens then the amplitude of modulating signal is greater than the aplitue od the carrier?
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distortion
The ratio between the modulating signal voltage and the carrier voltage is calles?
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modulation index
Types of analog modulation are:
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all of the above
Analog signal may be converted into digital signal by
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sampling
A distored signal of frequency fm is recovered from a sampled signal if the sampling frequency is
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fs < 2fm
One of the protocols dedicated to the beacon is
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Eddystone
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