Question 1

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.

Accepted Answer

slope overload noise

Question 2

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.

Accepted Answer

Manchester

Question 3

One of the most common forms of data transmitted between a transmitter and a receiver is textual data.

Accepted Answer

A) True 
 B)False  True

Question 4

The lowest note possible on the piano is ____ Hz, and the highest note possible is 4200 Hz.

Accepted Answer

A)  30
B)  80
C)  300
D)  450

Question 5

One encoding technique that converts analog data to a digital signal is ____.

Accepted Answer

A)  NRZ-L
B)  Manchester
C)  pulse code modulation (PCM) 
D)  NRZ-I

Question 6

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

Accepted Answer

A) True 
 B)False

Question 7

____ shift keying incorporates four different phase angles, each of which represents 2 bits.

Accepted Answer

A)  Quadrature amplitude
B)  Quadrature frequency
C)  Quadrature noise
D)  Quadrature phase

Question 8

Currently, ____________________ supports more than 110 different code charts (languages and symbol sets).

Accepted Answer

The answer of Currently, ____________________ supports more than 110 different...

Question 9

____________________ is unwanted electrical or electromagnetic energy that degrades the quality of signals and data.

Accepted Answer

The answer of ____________________ is unwanted electrical or electromagnetic energy...

Question 10

The ____________________ of a signal is the height of the wave above (or below) a given reference point.

Accepted Answer

The answer of The ____________________ of a signal is the...

Question 11

Attenuation in a medium such as copper wire is a logarithmic loss and is a function of distance and the resistance within the wire.

Accepted Answer

A) True 
 B)False

Question 12

The NRZ-L encoding scheme is simple to generate and inexpensive to implement in hardware.

Accepted Answer

A) True 
 B)False

Question 13

The ability to separate noise from a digital waveform is one of the great strengths of digital systems.

Accepted Answer

A) True 
 B)False

Question 14

A sine wave is common example used to demonstrate an analog signal.

Accepted Answer

A) True 
 B)False

Question 15

The set of all textual characters or symbols and their corresponding binary patterns is called a(n) ____________________.

Accepted Answer

The answer of The set of all textual characters or...

Question 16

____________________ is a simpler form of modulation in which binary 1s and 0s are represented by uniquely different values of amplitude, frequency, or phase.

Accepted Answer

The answer of ____________________ is a simpler form of modulation...

Question 17

According to a famous communications theorem created by Nyquist, the sampling rate using pulse code modulation must be at least three times the highest frequency of the original analog waveform.

Accepted Answer

A) True 
 B)False

Question 18

The ____ encoding scheme has a voltage change at the beginning of a 1 and no voltage change at the beginning of a 0.

Accepted Answer

A)  nonreturn to zero inverted (NRZI) 
B)  nonreturn to zero-level (NRZ-L) 
C)  Manchester
D)  Differential Manchester

Question 19

The ____________________ of a signal is the position of the waveform relative to a given moment of time, or relative to time zero.

Accepted Answer

The answer of The ____________________ of a signal is the...

Question 20

____ is the process of sending data over a signal by varying either its amplitude, frequency, or phase.

Accepted Answer

A)  Amplification
B)  Modulation
C)  Attenuation
D)  Digital encoding

Exam 2: Fundamentals of Data and Signals

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.

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.

One of the most common forms of data transmitted between a transmitter and a receiver is textual data.

The lowest note possible on the piano is ____ Hz, and the highest note possible is 4200 Hz.

One encoding technique that converts analog data to a digital signal is ____.

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

____ shift keying incorporates four different phase angles, each of which represents 2 bits.

Currently, ____________________ supports more than 110 different code charts (languages and symbol sets).

____________________ is unwanted electrical or electromagnetic energy that degrades the quality of signals and data.

The ____________________ of a signal is the height of the wave above (or below) a given reference point.

Attenuation in a medium such as copper wire is a logarithmic loss and is a function of distance and the resistance within the wire.

The NRZ-L encoding scheme is simple to generate and inexpensive to implement in hardware.

The ability to separate noise from a digital waveform is one of the great strengths of digital systems.

A sine wave is common example used to demonstrate an analog signal.

The set of all textual characters or symbols and their corresponding binary patterns is called a(n) ____________________.

____________________ is a simpler form of modulation in which binary 1s and 0s are represented by uniquely different values of amplitude, frequency, or phase.

According to a famous communications theorem created by Nyquist, the sampling rate using pulse code modulation must be at least three times the highest frequency of the original analog waveform.

The ____ encoding scheme has a voltage change at the beginning of a 1 and no voltage change at the beginning of a 0.

The ____________________ of a signal is the position of the waveform relative to a given moment of time, or relative to time zero.

____ is the process of sending data over a signal by varying either its amplitude, frequency, or phase.