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Exam 2: Fundamentals of Data and Signals

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Question 1

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The three basic components of analog and digital signals are: amplitude,frequency,and ____.

A) cycles
B) baud
C) hertz
D) phase

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Question 2

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What are common examples of data?

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Common examples of data include:
* A co...

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Certain control characters provide data transfer control between a computer source and computer destination.

The Manchester encoding schemes solve the synchronization problem but are relatively inefficient because they have a baud rate that is ____ the bps.

What are the four possible data-to-signal conversion combinations?

With the ____________________ encoding scheme,to transmit a 1,the signal changes from low to high in the middle of the interval; to transmit a 0,the signal changes from high to low in the middle of the interval.

IBM mainframe computers are major users of the EBCDIC character set.

The terms "data" and "signal" mean the same thing.

____________________ are the electric or electromagnetic impulses used to encode and transmit data.

Amplitude shift keying is restricted to only two possible amplitude levels: low and high.

Using ____,when a device transmits a binary 0,a zero voltage is transmitted.When the device transmits a binary 1,either a positive voltage or a negative voltage is transmitted.

The amplitude of a signal can be expressed as volts,____,or watts.

A problem inherent with delta modulation is that if the analog waveform rises or drops too quickly,the codec may not be able to keep up with the change,and ____________________ results.

What happens when you introduce noise into digital data and digital signals?

What is the purpose of using digital encoding schemes?

The big disadvantage of the Manchester schemes is that roughly half the time there will be two transitions during each bit.

One of the major problems with Unicode is that it cannot represent symbols other than those found in the English language.

By convention,the minimum and maximum values of analog data and signals are presented as voltages.

The ____________________ digital encoding scheme transmits 1s as zero voltages and 0s as positive voltages.

The most common example of ____ data is the human voice.