19 Questions
What is a key advantage of digital signals over analog signals?
Digital signals incur less attenuation
How does the bandwidth of a signal relate to its data rate?
Bandwidth increases as data rate increases
Why are digital signals the preferred choice despite greater attenuation?
Digital signals are more cost-effective
What characteristic of digital signals makes them less prone to distortion from external interference?
Use of dc components
In the context of signals, what role does data rate play in determining the effectiveness of digital communication?
Data rate impacts the speed and efficiency of digital communication
Which characteristic of digital signals contributes to their reduced vulnerability to external disturbances?
Less susceptibility to noise
What is the term for a direct link between two devices without any intermediate devices?
Point-to-point
Which type of signal maintains a constant level and then changes to another constant level?
Digital signal
What is the term for a transmission system with a limited band of frequencies that restricts the data rate?
Absolute bandwidth
Which term refers to entities that convey meaning in a data transmission system?
Data
What is the advantage of digital signals over analog signals in terms of noise resilience?
Digital signals are more resilient to noise
In multi-point transmission, how many devices share the link?
More than two devices
What is the main advantage of a digital signal being less susceptible to errors compared to an analog signal?
Presence or absence of transitions in the signal
Which modulation method is known for changing the height of the wave to encode data?
Amplitude Modulation (AM)
What happens when a carrier wave's phase remains unchanged in Phase Modulation (PM)?
Corresponds to a bit value of 0
What does a modem do in digital communication?
Encodes and decodes data by manipulating the carrier wave
Which multiplexing technique breaks up a high-speed circuit into several slower logical circuits?
Time Division Multiplexing (TDM)
What is the function of a Codec in digital communication?
Translates analog voice signals into digital form
In Analog Transmission of Digital Data, what device is used to translate digital data into analog signals?
Modem
Test your knowledge on analog signals, digital signals, advantages and disadvantages of digital signals, sockets programming, and client/server computing. Learn about the differences between analog and digital signals, the benefits of using digital signals, and how sockets programming enables client/server communication.
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