Theory of Automata MCQs with Answers
Practice important Theory of Automata MCQs with answers and explanations.
Multiple Choice Questions
Q371: A problem that has a decision procedure is called ______.
- A: Regular
- B: Decidable
- C: Solvable
- D: Non-solvable
View Answer
B
Q372: The regular expression (L1 ∩ L2c) ∪ (L1c ∩ L2) accepts which kind of words?
- A: Words in both L1 and L2
- B: Words in either L1 or L2, but not both
- C: Words in neither L1 nor L2
- D: Words in L1 only
View Answer
B
Q373: The finite automaton (FA) can be used to determine if ______.
- A: Two languages are regular
- B: A language is infinite
- C: A language is empty
- D: Two languages are context-free
View Answer
C
Q374: Pref(Q in R) is regular if which condition is met?
- A: R is regular, regardless of Q
- B: Q is regular, regardless of R
- C: Both R and Q are regular
- D: Neither R nor Q is regular
View Answer
A
Q375: What does FA stand for in automata theory?
- A: Finite Acceptance
- B: Finite Automaton
- C: Full Automaton
- D: Final Acceptance
View Answer
B
Q376: If a Finite Automaton (FA) has no final state, it ______.
- A: accepts nothing
- B: accepts all strings
- C: accepts some strings
- D: accepts one string
View Answer
A
Q377: In the intersection of two languages L1 and L2, when is it determined that they are not equivalent?
- A: If the FA accepts any word
- B: If the FA rejects all words
- C: If the FA is deterministic
- D: If the FA has an odd number of states
View Answer
A
Q378: What happens when an FA accepts a word with a length greater than or equal to N and less than 2N?
- A: The language is finite
- B: The FA stops functioning
- C: The FA accepts an infinite language
- D: The FA is in an invalid state
View Answer
C
Q379: How many strings need to be tested for an FA with 3 states and an alphabet of 2 letters to check if it accepts an infinite language?
- A: 56
- B: 12
- C: 24
- D: 36
View Answer
A
Q380: Which method involves testing words of length less than the number of states in an FA?
- A: Method 1
- B: Method 2
- C: Method 3
- D: Method 4
View Answer
C