Q.1
Which of the following is not defined by the entity?
  • a) Direction of any signal
  • b) Names of signal
  • c) Different ports
  • d) Behavior of the signals
Q.2
Which of the following can be the name of an entity?
  • a) NAND
  • b) Nand_gate
  • c) Nand gate
  • d) AND
Q.3
Which of the following is correct syntax for entity declaration?
  • a)
  • b)
  • c)
  • d)
Q.4
Refer to the VHDL code given below, how many input-output pins are there in MUX entity? ENTITY entity_name IS PORT( signal_names : signal_modes; signal_names : signal_modes); END entity_name;
  • a) 5
  • b) 4
  • c) 3
  • d) 2
Q.5
The entity name ‘xyz’ and ‘XYZ’ will be treated the same.
  • a) True
  • b) False
Q.6
Which of the following mode of the signal is bidirectional?
  • a) IN
  • b) OUT
  • c) INOUT
  • d) BUFFER
Q.7
In an assignment statement, OUT signal can be used only to the ___________
  • a) Left of <= operator
  • b) Right of <= operator
  • c) Any side of <= operator
  • d) Right of := operator
Q.8
On which side of assignment operator, we can use the IN type signal?
  • a) Left
  • b) Right
  • c) Both
  • d) Can’t be used
Q.9
What is the difference between OUT and BUFFER?
  • a) BUFFER can’t be used inside the entity for reading the value and OUT can be
  • b) BUFFER can only be read whereas OUT can only be assigned a value
  • c) BUFFER can be read as well as assigned a value but OUT can only be assigned
  • d) Both are same
Q.10
GENERICs are not declared in the entity.
  • a) True
  • b) False
Q.11
Which of the following is an entity declared for a full adder?
  • a)
  • b)
  • c)
  • d)
Q.12
How to control the structure and timing of the entity can be changed?
  • a) By using TIME variable in the entity
  • b) By changing the entity declaration from time to time
  • c) By using some special code
  • d) By using GENERICS
Q.13
Which of the following can have more than one driver?
  • a) IN
  • b) OUT
  • c) INOUT
  • d) BUFFER
Q.14
Which of the following is the default mode for a port variable?
  • a) IN
  • b) OUT
  • c) INOUT
  • d) BUFFER
0 h : 0 m : 1 s