Object-Oriented Programming (OOP)
Choose the correct description of Singleton pattern.
Difficulty: Hard
About this MCQ
This Hard Object-Oriented Programming (OOP) question asks: Choose the correct description of Singleton pattern. The correct choice is B. A design pattern that restricts the instantiation of a class to a single shared object.. Read the options below, commit to one, then use the explanation to see why that choice holds and why the others do not.
Object-Oriented Programming (OOP) 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 Object-Oriented Programming (OOP) 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 Object-Oriented Programming (OOP) 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. The process by which objects communicate with one another by invoking each other's methods.
Why not A: “The process by which objects communicate with one another by invoking each other's methods.” does not fit this question. The answer is A design pattern that restricts the instantiation of a class to a single shared object..
- B. A design pattern that restricts the instantiation of a class to a single shared object. ✓
- C. A mechanism where the method to be executed is determined at runtime rather than at compile time.
Why not C: “A mechanism where the method to be executed is determined at runtime rather than at compile time.” does not fit this question. The answer is A design pattern that restricts the instantiation of a class to a single shared object..
- D. A keyword that controls the visibility and accessibility of a class's members, such as public or private.
Why not D: “A keyword that controls the visibility and accessibility of a class's members, such as public or private.” does not fit this question. The answer is A design pattern that restricts the instantiation of a class to a single shared object..
Correct answer
B. A design pattern that restricts the instantiation of a class to a single shared object.
Explanation
A design pattern that restricts the instantiation of a class to a single shared object option B is the accepted answer to Choose the correct description of Singleton pattern Option A The process by which objects communicate with one another by invoking each other's methods does not fit this question Option C A mechanism where the method to be executed is determined at runtime rather than at compile time does not fit this question Option D A keyword that controls the visibility and accessibility of a class's members such as public or private does not fit this question For this Object-Oriented Programming OOP question the accepted answer is A design.
Source: Object-Oriented Programming (OOP) Official Reference Guide
Tags: computer science, oop, object-oriented programming, software design
Submitted by: MCQsHub Editorial
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