Multiplexer Quiz

What is the purpose of a multiplexer?

• Control the speed of data transmission

• Convert analogue signals to digital signals

• Switch one of several input lines to a single common output line

• Combine multiple output lines to a single input line

What is the generic term used to describe sending one or more signals over a common transmission line at different times or speeds?

• Multiplexing

• Decoding

• Encoding

• Demultiplexing

Which type of gates are used to construct digital multiplexers?

• OR gates

• AND gates

• NOT gates

• XOR gates

What is the function of the control lines in a multiplexer?

• Regulate the power supply

• Determine the output voltage level

• Select the appropriate data input line

• Control the clock speed

What is the Boolean expression for a 2-input multiplexer circuit?

• Q = A + I0

• Q = A + I1

• Q = A.I0 + A.I1

• Q = A.I0.I1

How many control address lines are required for a 4-input multiplexer?

• 1

• 2

• 4

• 3

What is the primary advantage of using multiplexers in data communications?

• Reduce the number of logic gates required

• Increase the number of output lines

• Increase heat dissipation

• Slow down data transmission

What is the function of a demultiplexer?

• Convert digital signals to analogue signals

• Switch one of several output lines to a single common input line

• Control the frequency of data transmission

• Combine multiple input lines to a single output line

Which type of circuits are multiplexers commonly used in?

• Power circuits

• Audio circuits

• Lighting circuits

• Heating circuits

What is the purpose of a multiplexer symbol in logic diagrams?

• Show the output voltage level

• Denote the start of a circuit

• Indicate the presence of a NOT gate

• Represent a combinational logic circuit