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BSOL Systems Interview Questions and Answers

Updated 6 Nov 2024
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Q1. What is abstract class give real life example of abstraction?

Ans.

Abstract class is a class that cannot be instantiated and is used as a blueprint for other classes.

  • Abstract class can have abstract methods that must be implemented by its subclasses.

  • Real life example of abstraction is a vehicle class with abstract methods like start() and stop().

  • Subclasses like Car and Bike can implement these abstract methods in their own way.

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Q2. Write code to test a number divisible by 2 or not?

Ans.

Check if a number is divisible by 2 using modulo operator.

  • Use the modulo operator (%) to check if the remainder is 0 when dividing the number by 2.

  • If the remainder is 0, then the number is divisible by 2.

  • For example, if num % 2 == 0, then the number is divisible by 2.

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Q3. The approach for finding the palindrome words within the sentence.

Ans.

To find palindrome words in a sentence, split the sentence into words and check if each word is equal to its reverse.

  • Split the sentence into words using whitespace as a delimiter

  • Iterate through each word and check if it is equal to its reverse

  • If a word is a palindrome, add it to the list of palindrome words

  • Consider case-insensitivity while checking for palindromes

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Q4. Write code to print prime number?

Ans.

Code to print prime numbers in a given range

  • Iterate through numbers in the range and check if each number is prime

  • Use a nested loop to check divisibility of each number by numbers less than itself

  • Print the number if it is prime

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Discover BSOL Systems interview dos and don'ts from real experiences

Q5. What are access modifiers?

Ans.

Access modifiers are keywords in programming languages that define the accessibility of classes, methods, and variables.

  • Access modifiers include public, private, protected, and default (package-private) in Java.

  • Public access allows classes, methods, and variables to be accessed from any other class.

  • Private access restricts access to only within the same class.

  • Protected access allows access within the same package or subclasses.

  • Default access allows access only within the same...read more

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Q6. What are classes and objects?

Ans.

Classes are blueprints for creating objects in object-oriented programming. Objects are instances of classes.

  • Classes define the properties and behaviors of objects.

  • Objects are instances of classes that can hold data and perform actions.

  • Classes can inherit properties and behaviors from other classes.

  • Objects can interact with each other by calling methods or accessing properties.

  • Example: Class 'Car' can have properties like 'color' and 'speed', and objects of class 'Car' can be...read more

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Q7. 1 Explain oops concept 2 Design patterns

Ans.

OOPs is a programming paradigm based on the concept of objects that interact with each other.

  • OOPs stands for Object-Oriented Programming.

  • It focuses on the creation of objects that have properties and methods.

  • Encapsulation, Inheritance, Polymorphism, and Abstraction are the four main pillars of OOPs.

  • Design patterns are reusable solutions to common software problems.

  • Some popular design patterns are Singleton, Factory, Observer, and Decorator.

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Q8. Oops concepts with Database

Ans.

Object-oriented programming concepts can be applied to databases for better organization and efficiency.

  • Encapsulation: Data and methods are encapsulated within classes to ensure data integrity.

  • Inheritance: Tables can inherit properties and methods from other tables, reducing redundancy.

  • Polymorphism: Different tables can have different implementations of the same method.

  • Abstraction: Complex database structures can be abstracted into simpler, more manageable entities.

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Q9. What is Oops concept

Ans.

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

  • Oops concept focuses on creating objects that contain data in the form of fields (attributes) and code in the form of procedures (methods).

  • It allows for the creation of reusable code and modular programs.

  • Encapsulation, inheritance, polymorphism, and abstraction are the four main principles of Oops concept.

  • Example: Inheritance allows a class to inherit properties a...read more

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Resume Shortlist Round
Aptitude Test Round
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