1. What is the primary purpose of finite automata in computer science?

A . To recognize patterns

B . To perform arithmetic operations

C . To manage memory

D . To process data

Answer

2. Which of the following is a central concept in Automata theory?

A . Strings

B . Memory

C . Registers

D . Processing power

Answer

3. In Automata Theory, a string is defined as:

A . A sequence of states

B . A sequence of symbols

C . A set of rules

D . A single character

Answer

4. What is an example of an application of Non-deterministic Finite Automata (NFA)?

A . Text Search

B . Sorting numbers

C . Arithmetic calculations

D . Data storage

Answer

5. A Non-deterministic Finite Automaton (NFA) differs from a DFA by:

A . Having a single transition for every symbol

B . Having multiple transitions for the same input

C . Being deterministic

D . Using no transitions

Answer

6. Which of the following is the main feature of Epsilon-Transitions in NFAs?

A . Transitions with no input

B . State-based transitions

C . Direct transitions to other states

D . Infinite loops

Answer

7. The formal definition of a DFA includes which of the following?

A . A set of states, alphabet, transition function, start state, and accept state(s)

B . Only a set of states

C . A set of transition rules

D . A set of symbols and states

Answer

8. How does a DFA process strings?

A . By following a unique path from start to an accepting state

B . By making random transitions

C . By using loops

D . By reading symbols and making no transitions

Answer

9. Which of the following is true about a DFA`s language?

A . The language consists of all possible strings

B . The language consists of strings that the DFA accepts

C . The language includes infinite symbols

D . The language includes only empty strings

Answer

10. Conversion of an NFA with ε-transitions to an NFA without ε-transitions is called:

A . NFA minimization

B . ε-NFA removal

C . DFA conversion

D . NFA to DFA

Answer

11. A Moore machine is a type of finite automaton where:

A . Output depends on the current state only

B . Output depends on the state and input

C . Output is always zero

D . There is no output

Answer

12. What does a Mealy machine use to determine output?

A . Current state

B . Current state and input symbol

C . Previous state

D . Random transitions

Answer

13. The transition function in a DFA is:

A . Undefined for some states

B . Deterministic for each state

C . Non-deterministic for each state

D . Based on ε-transitions

Answer

14. What does the term "alphabet" in Automata theory refer to?

A . A set of characters or symbols

B . The set of states

C . The set of transitions

D . A group of languages

Answer

15. Which of the following is true about an NFA?

A . It can have multiple transitions for the same input

B . It has only one transition for each symbol

C . It accepts no strings

D . It has no start state

Answer

16. What is the main advantage of Nondeterministic Finite Automata over DFAs?

A . NFAs require fewer states

B . NFAs are easier to implement

C . NFAs can process strings faster

D . NFAs can accept a wider variety of languages

Answer

17. Which of the following is a characteristic of deterministic finite automata (DFA)?

A . A DFA has multiple paths for the same input

B . A DFA has one path for each input symbol

C . A DFA doesn`t need a start state

D . A DFA has non-deterministic transitions

Answer

18. In the process of converting an NFA to a DFA, what is created for each subset of NFA states?

A . A unique DFA state

B . A set of transitions

C . An accepting state

D . An epsilon-transition

Answer

19. What type of machine can recognize regular languages?

A . Finite Automata

B . Turing Machines

C . Pushdown Automata

D . Recursive Machines

Answer

20. Which of the following is a limitation of a DFA?

A . It can only accept regular languages

B . It can have multiple paths for the same input

C . It cannot handle epsilon transitions

D . It cannot be represented graphically

Answer

21. What is the role of the start state in a DFA?

A . It determines which state the automaton starts in

B . It accepts or rejects the input string

C . It has no function

D . It provides the output

Answer

22. Which of the following is true about the transition diagram of a DFA?

A . Each state has multiple transitions for each input symbol

B . Each state has exactly one transition for each input symbol

C . Each state has no transition for any symbol

D . There are no start or accepting states

Answer

23. How many different states can a DFA have?

A . It can have an infinite number of states

B . It can have a finite number of states

C . It has only one state

D . It has at least two states

Answer

24. What does ε represent in an NFA with ε-transitions?

A . An empty string

B . A transition without consuming an input symbol

C . A special type of state

D . A random transition

Answer

25. What is the first step in the conversion of an NFA to a DFA?

A . Identify all possible subsets of NFA states

B . Find the final states in the NFA

C . Remove ε-transitions from the NFA

D . Define the alphabet

Answer

26. What is the result when a DFA processes a string that it does not accept?

A . It reaches a dead state

B . It loops back to the start state

C . It outputs a symbol

D . It stops processing

Answer

27. Which of the following is true for a DFA with n states?

A . It can only process strings of length n

B . It can process strings of any length

C . It can only process strings with n symbols

D . It requires exactly n symbols to transition

Answer

28. Which machine is primarily used for text search applications?

A . Non-deterministic Finite Automata (NFA)

B . Turing Machine

C . Deterministic Finite Automata (DFA)

D . Pushdown Automata

Answer

29. A transition function in a DFA is represented as:

A . A set of rules defining state transitions

B . A list of possible input symbols

C . A finite sequence of states

D . A set of ε-transitions

Answer

30. What is the role of an accepting state in a DFA?

A . It accepts or rejects strings

B . It starts the string processing

C . It defines the alphabet

D . It determines the output

Answer

31. Given the NFA transition table below, what is the transition for state q1​ on input a?

A . q1

B . q2

C . q0

D . No transition

Answer

32. Given the DFA transition table below, what is the final state for the input string "ab"?

A . q0

B . q1

C . q2

D . No final state

Answer

33.  Convert the following ε-NFA transition to an NFA without ε-transitions: δ(q0,ϵ)={q1}.

A . δ(q0,a)={q1}

B . δ(q0,ϵ)={q1}

C . δ(q0,a)={q0,q1}

D . δ(q0,a)={q0}

Answer

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