Explore topic-wise MCQs in Vhdl.

This section includes 11 Mcqs, each offering curated multiple-choice questions to sharpen your Vhdl knowledge and support exam preparation. Choose a topic below to get started.

1.

Which of the following is the default mode for a port variable?

A. IN
B. OUT
C. INOUT
D. BUFFER
Answer» B. OUT
Discussion
2.

Which of the following can have more than one driver?

A. IN
B. OUT
C. INOUT
D. BUFFER
Answer» D. BUFFER
Discussion
3.

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
Answer» E.
Discussion
4.

GENERICs are not declared in the entity.

A. True
B. False
Answer» C.
Discussion
5.

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
Answer» D. Both are same
Discussion
6.

On which side of assignment operator, we can use the IN type signal?

A. Left
B. Right
C. Both
D. Can t be used
Answer» C. Both
Discussion
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
Answer» B. Right of <= operator
Discussion
8.

Which of the following mode of the signal is bidirectional?

A. IN
B. OUT
C. INOUT
D. BUFFER
Answer» D. BUFFER
Discussion
9.

The entity name xyz and XYZ will be treated the same.

A. True
B. False
Answer» B. False
Discussion
10.

Which of the following can be the name of an entity?

A. NAND
B. Nand_gate
C. Nand gate
D. AND
Answer» C. Nand gate
Discussion
11.

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
Answer» E.
Discussion