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Welcome to the Finite Automata and Regular Expression MCQs Page

Dive deep into the fascinating world of Finite Automata and Regular Expression with our comprehensive set of Multiple-Choice Questions (MCQs). This page is dedicated to exploring the fundamental concepts and intricacies of Finite Automata and Regular Expression, a crucial aspect of Compiler Design. In this section, you will encounter a diverse range of MCQs that cover various aspects of Finite Automata and Regular Expression, from the basic principles to advanced topics. Each question is thoughtfully crafted to challenge your knowledge and deepen your understanding of this critical subcategory within Compiler Design.

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Check out the MCQs below to embark on an enriching journey through Finite Automata and Regular Expression. Test your knowledge, expand your horizons, and solidify your grasp on this vital area of Compiler Design.

Note: Each MCQ comes with multiple answer choices. Select the most appropriate option and test your understanding of Finite Automata and Regular Expression. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

Finite Automata and Regular Expression MCQs | Page 6 of 6

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Q51.
Which NDFA correctly represents the following RE :

a(bab)*∪a(ba)*

a.

a

b.

b

c.

c

d.

d

Discuss
Answer: (a).a
Q52.
Which is the correct NDFA for the following mentioned expression? (ab)*∪(aba)*.

a.

a

b.

b

c.

c

d.

d

Discuss
Answer: (b).b
Q53.
Construct a NDFA for the following regular expression :

(a∪b)*aba(a∪b)*

a.

a

b.

b

c.

c

d.

d

Discuss
Answer: (a).a
Q54.
A deterministic finite automation (DFA)D with alphabet ∑= {a,b} is given below.
Which of the following is a valid minimal DFA which accepts the same language as D?

a.

a

b.

b

c.

c

d.

d

Discuss
Answer: (a).a
Q55.
What is the complement of the language accepted by the NFA shown below? Assume ∑ = {a} and ε is the empty string.

a.

Φ

b.

ε

c.

a

d.

{a, ε}

Discuss
Answer: (b).ε
Q56.
Consider the set of strings on {0,1} in which, every substring of 3 symbols has at most two zeros. Complete the partially completed DFA that accepts this language is shown below. The missing arcs in the DFA are

a.

a

b.

b

c.

c

d.

d

Discuss
Answer: (d).d
Q57.
Convert the NFA to DFA

a.

a

b.

b

c.

c

d.

d

Discuss
Answer: (a).a
Q58.
Examine the following DFA: If input is 011100101, which edge is NOT traversed?

a.

A B

b.

C

c.

C D

d.

D A

Discuss
Answer: (c).C D
Q59.
If string s is accepted by this DFA, which of these strings cannot be suffix of s?

a.

111001

b.

111111

c.

111000

d.

101010

Discuss
Answer: (a).111001
Page 6 of 6

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