Excellent Automata Theory Test - 35+ MCQs: Automata Theory test: Evaluate Your Understanding with Automata Questions and Answers

1. Which automaton has the most computational power?

Deterministic Finite Automaton

Pushdown Automaton

Turing Machine

Nondeterministic Finite Automaton

2. What is an automaton in computer science?

A software for data processing

A mathematical model of computation

A programming language feature

A type of data structure

3. What is the primary purpose of a Turing Machine?

Recognize context-free languages

Recognize regular languages

Simulate any computer algorithm

Recognize deterministic languages

4. Which automaton recognizes a regular language?

Pushdown automaton

Turing machine

Finite automaton

Linear bounded automaton

5. In automata theory, what does ε denote?

An empty string

A non-empty string

A single character

An infinite string

6. What is the primary limitation of deterministic context-free languages?

They cannot parse ambiguous grammars efficiently

They can only recognize regular languages

They are not expressive enough to represent all formal languages

They cannot be used to define context-free grammars

7. What is the significance of the hierarchy theorem in formal languages?

It demonstrates the existence of languages that cannot be recognized by machines of a certain type

It establishes a hierarchy of Turing machines based on computational power

It proves that every context-free language is also regular

It defines the limits of regular expressions

8. What does the halting problem state?

It is undecidable whether a given Turing machine halts on all inputs

Every Turing machine halts on every input

There exists a Turing machine that halts on no inputs

Every Turing machine halts on some input

9. Define a decidable language in the context of Turing machines.

A language for which there exists a Turing machine that accepts all strings

A language that can be recognized by a non-deterministic Turing machine

A language that has a unique Turing machine

A language that cannot be recognized by any Turing machine

10. What is the primary purpose of a deterministic finite automaton (DFA)?

To recognize regular languages

To recognize context-free languages

To recognize context-sensitive languages

To recognize Turing-complete languages

Automata Theory MCQ Test 3