Multiplexers (Data Selectors) MCQ

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• What is data routing in a multiplexer?
  ক

  It spreads the information to the control unit

  খ

  It can be used to route data from one of several source to destination

  গ

  It is an application of multiplexer

  ঘ

  It can be used to route data and it is an application of multiplexer
• If enable input is high then the multiplexer is ______________
  ক

  Enable

  খ

  Disable

  গ

  Saturation

  ঘ

  High Impedance
• The inputs/outputs of an analog multiplexer/demultiplexer are ____________
  ক

  Bidirectional

  খ

  Unidirectional

  গ

  Even parity

  ঘ

  Binary-coded decimal
• One multiplexer can take the place of ____________
  ক

  Several SSI logic gates

  খ

  Combinational logic circuits

  গ

  Several Ex-NOR gates

  ঘ

  Several SSI logic gates or combinational logic circuits
• A basic multiplexer principle can be demonstrated through the use of a ____________
  ক

  Single-pole relay

  খ

  DPDT switch

  গ

  Rotary switch

  ঘ

  Linear stepper
• Without any additional circuitry an 8:1 MUX can be used to obtain ____________
  ক

  Some but not all Boolean functions of 3 variables

  খ

  All function of 3 variables but none of 4 variables

  গ

  All functions of 3 variables and some but not all of 4 variables

  ঘ

  All functions of 4 variables
• A combinational circuit is one in which the output depends on the ____________
  ক

  Input combination at the time

  খ

  Input combination and the previous output

  গ

  Input combination at that time and the previous input combination

  ঘ

  Present output and the previous output
• Which of the following circuit can be used as parallel to serial converter?
  ক

  Multiplexer

  খ

  Demultiplexer

  গ

  Decoder

  ঘ

  Digital counter
• A combinational circuit that selects one from many inputs are ____________
  ক

  Encoder

  খ

  Decoder

  গ

  Demultiplexer

  ঘ

  Multiplexer
• The two input MUX would have ____________
  ক

  1 select line

  খ

  2 select lines

  গ

  4 select lines

  ঘ

  3 select lines
• 4 to 1 MUX would have ____________
  ক

  2 inputs

  খ

  3 inputs

  গ

  4 inputs

  ঘ

  5 inputs
• The enable input is also known as ___________
  ক

  Select input

  খ

  Decoded input

  গ

  Strobe

  ঘ

  Sink
• In the given 4-to-1 multiplexer, if c1 = 0 and c0 = 1 then the output M is ___________
  ক

  X0

  খ

  X1

  গ

  X2

  ঘ

  X3
• How many NOT gates are required for the construction of a 4-to-1 multiplexer?
  ক

  3

  খ

  4

  গ

  2

  ঘ

  5
• A basic multiplexer principle can be demonstrated through the use of a ___________
  ক

  Single-pole relay

  খ

  DPDT switch

  গ

  Rotary switch

  ঘ

  Linear stepper
• How many select lines would be required for an 8-line-to-1-line multiplexer?
  ক

  2

  খ

  4

  গ

  8

  ঘ

  3
• If the number of n selected input lines is equal to 2^m then it requires _____ select lines.
  ক

  2

  খ

  m

  গ

  n

  ঘ

  2n
• In a multiplexer, the selection of a particular input line is controlled by ___________
  ক

  Data controller

  খ

  Selected lines

  গ

  Logic gates

  ঘ

  Both data controller and selected lines
• A digital multiplexer is a combinational circuit that selects ___________
  ক

  One digital information from several sources and transmits the selected one

  খ

  Many digital information and convert them into one

  গ

  Many decimal inputs and transmits the selected information

  ঘ

  Many decimal outputs and accepts the selected information
• One multiplexer can take the place of ___________
  ক

  Several SSI logic gates

  খ

  Combinational logic circuits

  গ

  Several Ex-NOR gates

  ঘ

  Several SSI logic gates or combinational logic circuits
• What is the function of an enable input on a multiplexer chip?
  ক

  To apply Vcc

  খ

  To connect ground

  গ

  To active the entire chip

  ঘ

  To active one half of the chip
• Which is the major functioning responsibility of the multiplexing combinational circuit?
  ক

  Decoding the binary information

  খ

  Generation of all minterms in an output function with OR-gate

  গ

  Generation of selected path between multiple sources and a single destination

  ঘ

  Encoding of binary information
• It is possible for an enable or strobe input to undergo an expansion of two or more MUX ICs to the digital multiplexer with the proficiency of large number of ___________
  ক

  Inputs

  খ

  Outputs

  গ

  Selection lines

  ঘ

  Enable lines
• Which combinational circuit is renowned for selecting a single input from multiple inputs & directing the binary information to output line?
  ক

  Data Selector

  খ

  Data distributor

  গ

  Both data selector and data distributor

  ঘ

  DeMultiplexer
• What is a multiplexer?
  ক

  It is a type of decoder which decodes several inputs and gives one output

  খ

  A multiplexer is a device which converts many signals into one

  গ

  It takes one input and results into many output

  ঘ

  It is a type of encoder which decodes several inputs and gives one output