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

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