MULTIPLEXING

In a multiplex unit, the computer reads data: randomly throughout transmission. only during the time period assigned to it. according to parameter variations.

In Time Division Multiplexing (TDM): all signals are transmitted all the time in the same frequency band. all signals are transmitted all the time but in different frequency bands. messages occupy all the channel bandwidth but for short time intervals of time.

In WDM, how are signals differentiated?. By time slots. By different wavelengths. By voltage.

What is the transmission nature in TDM?. All users share all channels. Each user has a unique wavelength. Each user gets a time slice.

What kind of address line does a 12-bit, 16-channel encoder use?. 2 wire series address line. 4 bit parallel address line. 3 bit parallel address line.

What happens in TDM?. All messages transmit simultaneously on the same frequency. Signals vary depending on data rate. Each message is given the full bandwidth for a specific time slot.

A demultiplexer can be used to: Join multiple inputs into one output. Convert analog signals to digital. Distribute one input to multiple outputs.

In data systems, what enables selection of multiple input lines?. Decoder. Multiplexer. Shift register.

What is the total number of inputs for a multiplexer with two select lines?. two inputs. four outputs. four inputs.

Which device breaks a single input into multiple outputs?. Encoder. Decoder. Demultiplexer.

A 3-bit select line in a multiplexer can address how many inputs?. 4. 8. 3.

What is the main concept of Frequency Division Multiplexing (FDM)?. all signals are transmitted all the time in the same band. all signals are transmitted at the same time but in different frequency bands. messages occupy all the bandwidth for short time.

An 8-to-1 multiplexer has: two select inputs. four select inputs. three select inputs.

In a de-multiplexer, what determines the output line?. Select lines. Input voltage. Output current.

To multiplex digital signals, which technique is most suitable?. Frequency Division Multiplexing. Time Division Multiplexing. Wavelength Division Multiplexing.

Sharing of a medium between two or more devices is called: Multiplexing. Fully Duplexing. Duplexing.

Which device converts serial data to parallel form?. Multiplexer. Demultiplexer. Shift register.

Which of the following is an output type of a multiplexer?. Parallel input. Multiple parallel outputs. Serial transmission.

The role of a multiplexer includes: Sending outputs to all inputs simultaneously. Selecting one data source from many. Converting analog to digital.

What device performs serial to parallel and parallel to serial conversion?. Switching. Encoder/Decoder. Multiplexer/Demultiplexer.

What is the function of a demultiplexer?. Serial-in, serial-out data transfer. Parallel-in, parallel-out data transfer. Serial-in, parallel-out data transfer.

Which of the following allows many signals on a single line?. Multiplexer. Resistor. Capacitor.

How many select lines are needed for an 8-input multiplexer?. 4. 3. 8.

How many select lines are needed for a 16-input multiplexer?. Four. Two. Three.

Which multiplexing technique is used in optical fiber networks?. Wavelength Division Multiplexing. Frequency Division Multiplexing. Time Division Multiplexing.

A multiplexer primarily: takes one input and broadcasts it in parallel. converts parallel data to multiple outputs. takes many input signals and converts them to a serial transmission output.

Another name for a multiplexer is: a shift register. a bus transceiver. a data selector.

A de-multiplexer with three select lines will have: three outputs. eight outputs. eight inputs.

FDM works by: Assigning frequency ranges. Using voltage differences. Assigning time slots.

A multiplexer with 3 select lines can control: 8 inputs. 4 inputs. 16 outputs.