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WorksheetsWCM Chapter 1.3
Total questions: 15
Worksheet time: 8mins
Which statement is Not True for 'Digital transmission'?
Easy to Apply Encryption
Transmit Longer Distance
Maintain Data Integrity
Difficult to Multiplex
'Analogue' transmission conveys voice, data, image or video information using an information signal that is _____________________.
continuously varying
constant frequency
constant voltage
discretely varying
Which of the following is TRUE about the advantages of 'Digital Transmission?
Maintains Data Integrity
Transmit shorter distance
Difficult to Multiplex
Difficult to apply Encryption
Digital signals is represent in __ bits and ___ bits.
one, zero
high, low
multiple, single
regular, irregular
ADC is used for ____
conversion from analog to digital
conversion of alternate current (AC) to direct current (DC)
conversion of digital to analog
conversion of direct current(DC) to alternate current (AC)
The disadvantages of digital transmission are ____
costly to convert from analogue system
higher bandwidth & system requirement
difficult to apply encryption
more sensitive to noise and impairments
Which type of transmission conveys information in a continuously varying signal?
Digital
Analog
Both
None
What is the name of the device used to convert analog signal into digital signal?
Analog Signal Converter
Digital Signal Converter
ADC
DAC
What is the name of the device used to convert digital signal into analog signal?
Analog Signal Converter
Digital Signal Converter
ADC
DAC
Which of the following is NOT an advantage of digital transmission over analog transmission?
Maintain Data Integrity
Easy to Multiplex
Transmit Longer Distance
Less Sensitive to Noise & Impairments
What is the main disadvantage of digital transmission?
Costly to convert from Analog system
Difficult to apply encryption
Limited to shorter distances
Less data integrity
Which of the following is NOT a reason why digital transmission is widely used?
Easier to apply encryption
Maintains data integrity
Less sensitive to noise and impairments
More cost effective
What is the main difference between analogue and digital transmission?
Analogue is a series of discrete pulses, whereas digital is continuously varying.
Analogue is continuously varying, whereas digital is a series of discrete pulses.
Both analogue and digital are continuously varying.
Both analogue and digital are a series of discrete pulses.
Why must analogue signals be converted into digital signals before digital transmission?
To make the transmission more sensitive to noise and impairments.
To make it easier to integrate voice, video and data.
To make it easier to hack encryption.
To enable the transmission to travel longer distances without repeater.
Which of the following is an advantage of digital transmission?
More cost-effective than analogue transmission.
Less sensitive to noise and impairments.
No need for a digital-to-analogue converter.
Does not require as much bandwidth or system requirements as analogue transmission.
