Theory of Computation (Automata)
What is the name for a finite, non-empty set of symbols used to construct strings in a formal language?
Difficulty: Easy
About this MCQ
This Easy Theory of Computation (Automata) question asks: What is the name for a finite, non-empty set of symbols used to construct strings in a formal language? The correct choice is A. Alphabet. Read the options below, commit to one, then use the explanation to see why that choice holds and why the others do not.
Theory of Computation (Automata) items like this one are written for Pakistan exams such as CSS, FPSC, PPSC, and NTS. The difficulty label is a hint about how much of the topic the stem assumes, not a score. Tags and exam names, when they are present, tell you where else the same idea is tested. Previous and next links stay in Theory of Computation (Automata) so you can continue the subject. Related questions point at nearby stems if you want another angle on the same idea.
Treat the explanation as part of the question, not a footnote. If you missed it, reread the stem against the correct option before you open the next Theory of Computation (Automata) item. A timed quiz is the same pool with a clock and a score. A past paper is a full sitting rather than this single question.
- A. Alphabet ✓
- B. Non-deterministic finite automaton (NFA)
Why not B: “Non-deterministic finite automaton (NFA)” does not fit this question. The answer is Alphabet.
- C. Pushdown automaton
Why not C: “Pushdown automaton” does not fit this question. The answer is Alphabet.
- D. Deterministic finite automaton (DFA)
Why not D: “Deterministic finite automaton (DFA)” does not fit this question. The answer is Alphabet.
Correct answer
A. Alphabet
Explanation
Alphabet is the value that answers “What is the name for a finite, non-empty set of symbols used to construct strings in a formal language” (option A). Option B (Non-deterministic finite automaton (NFA)) does not fit this question. Option C (Pushdown automaton) does not fit this question. Option D (Deterministic finite automaton (DFA)) does not fit this question. For this Theory of Computation (Automata) question, the accepted answer is Alphabet.
Source: Theory of Computation (Automata) Official Reference Guide
Tags: computer science, automata theory, theory of computation, formal languages
Submitted by: MCQsHub Editorial
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