comm 5

Which type(s) of signal(s) can be easily corrected to remove noise?

• Analog
• Digital
• Both
• Neither

Analog signals can be converted to digital through a process called _____.

• conversion
• processing
• sampling
• translation

Which type(s) of signal(s) can be transmitted as radio waves?

• Analog
• Digital
• Both
• Neither

AM and FM radio stations

• switch between analog and digital signals to broadcast sound waves.

• transmit sound using multiple frequency ranges, including radio waves, visible light, and ultraviolet light.

• change the amplitude or frequency of waves to encode sounds.

• convert broadcasts into binary code.

What is a one or zero called in coding?

• Byte
• Code
• Switch
• Bit

Which value is represented by the 4-bit binary code 1001

• 2

• 4

• 8

• 9

Which 4-bit code represents the number 13?

• 1010

• 1101

• 0010

• 1100

An analog signal is sent in discrete pulses in two states, on= 1 or off= 0.

• True

• False

Below are the advantages of using digital modulation EXCEPT

• Digital modulation has better immunity to noise.

• Digital modulation has a more secure signal transmission.

• Digital modulation requires larger transmission bandwidth.

• Digital modulation has higher efficiency in multiplexing several signals.

Computers store information in bits, or binary digits. Which of the following could be represented in bits?

• Numbers

• Text

• Images

• Sounds

• All of the above