PHYSICAL LAYER AND TRANSMISSION MEDIA
DATA AND SIGNALS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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They are represented as continuous waveforms only
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They are represented in the form of binary 1s and 0s only
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They can exist in either analog or digital form
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Not in the choices
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Detailed explanation-1: -An analog signal is time-varying and generally bound to a range (e.g. +12V to-12V), but there is an infinite number of values within that continuous range. An analog signal uses a given property of the medium to convey the signal’s information, such as electricity moving through a wire.
Detailed explanation-2: -The difference between analog and digital is in how the information/data is measured: Analog technology uses data that is continuous and the goal is to capture a likeness of reality. Digital technology uses sampling to encode the data and then reproduces it as closely as needed.
Detailed explanation-3: -Analog Signals are time-varying electronic signals. Analog Signals are continuous in nature. It can be either periodic or non-periodic. These are less accurate signals in comparison to Digital signals. More items
Detailed explanation-4: -Digital signals are time separated signals. This type of electronic l signals can be processed and transmitted better compared to analog signal. Digital signals are versatile, so it is widely used. The accuracy of the digital signal is better than that of the analog signal. 01-Apr-2023