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Black & White Business Solutions Interview Questions and Answers

Updated 5 Feb 2024

Q1. What is MVC, does laravel follow MVC architecture

Ans.

MVC stands for Model-View-Controller. Laravel follows the MVC architecture.

  • MVC is a software design pattern that separates an application into three interconnected components: Model, View, and Controller.

  • Model represents the data and business logic of the application.

  • View is responsible for rendering the user interface.

  • Controller handles the user input, updates the model, and interacts with the view.

  • Laravel, a popular PHP framework, follows the MVC architecture.

  • For example, i...read more

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Q2. What is model, controller, migrations in laravel

Ans.

Model, controller, and migrations are key components in the Laravel framework for organizing and managing database-related operations.

  • Model: Represents the data structure and logic of a specific table in the database.

  • Controller: Handles the logic and flow of the application, interacting with models and views.

  • Migrations: Allow for database schema changes and version control, making it easy to manage and deploy database changes.

  • Example: In a blog application, the 'Post' model w...read more

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Q3. What is mean by linear regression and their types

Ans.

Linear regression is a statistical method to model the relationship between a dependent variable and one or more independent variables.

  • Linear regression is used to predict a continuous outcome based on one or more input features.

  • Types of linear regression include simple linear regression (one independent variable), multiple linear regression (multiple independent variables), and polynomial regression (non-linear relationships).

  • Example: Predicting house prices based on square ...read more

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Q4. What is middleware

Ans.

Middleware is software that acts as a bridge between different applications, allowing them to communicate and share data.

  • Middleware facilitates communication and data exchange between different software components.

  • It provides a layer of abstraction, allowing applications to interact without needing to understand each other's internal workings.

  • Examples of middleware include web servers, message queues, and API gateways.

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Q5. Difference between == and ===

Ans.

The difference between == and === is that == performs type coercion, while === does not.

  • The == operator compares two values for equality, allowing type coercion.

  • The === operator compares two values for equality, without type coercion.

  • Using ==, different types can be considered equal if they can be coerced into the same value.

  • Using ===, different types are not considered equal, even if they have the same value.

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Q6. Explain OOPS Concept

Ans.

OOPS (Object-Oriented Programming) is a programming paradigm that uses objects to represent and manipulate data.

  • OOPS focuses on creating reusable code through the use of classes and objects.

  • It emphasizes the concepts of encapsulation, inheritance, and polymorphism.

  • Encapsulation allows data and methods to be bundled together within a class.

  • Inheritance enables the creation of new classes based on existing ones, inheriting their properties and behaviors.

  • Polymorphism allows objec...read more

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