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PowerSchool India Associate Software Engineer Interview Questions and Answers

Updated 5 Feb 2024

Q1. Do you know anything about memory allocation and how it's done?

Ans.

Memory allocation is the process of assigning memory to programs during runtime.

  • Memory allocation is done dynamically during runtime

  • It involves allocating and deallocating memory as needed

  • Common methods include malloc(), calloc(), and realloc()

  • Memory leaks can occur if memory is not properly deallocated

  • Memory allocation is important for efficient program execution

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Q2. What is the purpose of garbage collector

Ans.

Garbage collector is a program that automatically frees up memory occupied by objects that are no longer in use.

  • Garbage collector is used to prevent memory leaks and improve memory management.

  • It automatically identifies and frees up memory occupied by objects that are no longer in use.

  • Garbage collector is used in programming languages like Java, C#, and Python.

  • It helps to reduce the burden of manual memory management on developers.

  • Garbage collector can impact the performance ...read more

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Q3. Could you implement those in code ?

Ans.

Yes, I can implement those in code.

  • I have experience in coding and implementing various algorithms and data structures.

  • I am proficient in programming languages such as Java, Python, and C++.

  • I can provide examples of my previous coding projects upon request.

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Q4. What is oops ?

Ans.

OOPs stands for Object-Oriented Programming. It is a programming paradigm based on the concept of objects.

  • OOPs is based on the four main principles: Encapsulation, Inheritance, Polymorphism, and Abstraction.

  • Encapsulation is the process of hiding the implementation details from the user.

  • Inheritance is the process of creating new classes from existing classes.

  • Polymorphism is the ability of an object to take on many forms.

  • Abstraction is the process of hiding the unnecessary deta...read more

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Q5. Main purposes of oops?

Ans.

The main purposes of OOP are encapsulation, inheritance, and polymorphism.

  • Encapsulation helps to hide the complexity of the code and protect data from outside access.

  • Inheritance allows for the creation of new classes based on existing ones, reducing code duplication.

  • Polymorphism enables objects to take on multiple forms and behave differently depending on the context.

  • OOP promotes code reusability, modularity, and maintainability.

  • Examples of OOP languages include Java, C++, an...read more

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Q6. Pillars of oops?

Ans.

Pillars of OOPs are Abstraction, Encapsulation, Inheritance, and Polymorphism.

  • Abstraction: Hiding implementation details and showing only necessary information.

  • Encapsulation: Binding data and functions together to protect data from outside interference.

  • Inheritance: Creating new classes from existing ones, inheriting properties and methods.

  • Polymorphism: Ability of objects to take on multiple forms or behaviors.

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