Theory of Computation (Automata)
Which term refers to a property of a problem indicating whether an algorithm can be constructed that always provides a correct yes/no answer?
Difficulty: Hard
About this MCQ
This Hard Theory of Computation (Automata) question asks: Which term refers to a property of a problem indicating whether an algorithm can be constructed that always provides a correct yes/no answer? The correct choice is D. Decidability. 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
Why not A: “Alphabet” does not fit this question. The answer is Decidability.
- B. Deterministic finite automaton (DFA)
Why not B: “Deterministic finite automaton (DFA)” does not fit this question. The answer is Decidability.
- C. Pushdown automaton
Why not C: “Pushdown automaton” does not fit this question. The answer is Decidability.
- D. Decidability ✓
Correct answer
D. Decidability
Explanation
Decidability is the term that matches “Which term refers to a property of a problem indicating whether an algorithm can be constructed that always provides a correct yes/no answer” (option D). Option A (Alphabet) does not fit this question. Option B (Deterministic finite automaton (DFA)) does not fit this question. Option C (Pushdown automaton) does not fit this question. For this Theory of Computation (Automata) question, the accepted answer is Decidability.
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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