20+ Tatvasoft Interview Questions and Answers

Array map transforms each element of an array, array filter filters elements based on a condition, and for each iterates over each element.

• Array map returns a new array with transformed elements

• Array filter returns a new array with elements that pass a condition

• For each does not return anything, it just iterates over each element

• All three methods do not modify the original array

• Examples: map - doubling each element of an array, filter - getting all even numbers from an array,...read more

Dependency injection is a design pattern used to remove hard-coded dependencies and make code more flexible and testable.

• Dependency injection is a way to provide objects with the dependencies they need to function.

• It involves creating objects with their dependencies injected from outside rather than hard-coding them.

• This makes code more flexible, reusable, and testable.

• There are three types of dependency injection: constructor injection, setter injection, and interface inject...read more

useMemo is used to memoize a value, while useCallback is used to memoize a function.

• useMemo is used to optimize expensive computations by caching the result and returning it if the inputs haven't changed.

• useCallback is used to optimize expensive function creation by caching the function instance and returning it if the inputs haven't changed.

• useMemo returns a value, while useCallback returns a memoized function.

• useMemo is useful for memoizing values that are expensive to comp...read more

ERD stands for Entity Relationship Diagram, a visual representation of entities and their relationships in a database.

• ERD is used to design and model databases.

• It shows the relationships between entities, such as one-to-one, one-to-many, and many-to-many.

• Entities are represented as rectangles, and relationships are represented as lines connecting them.

• Attributes of entities are also shown in ERD.

• Example: A customer can have many orders, but an order can only belong to one cus...read more

LLM stands for Master of Laws, a postgraduate degree in law. The world is crazy about it due to its specialized focus and career opportunities.

• LLM is a postgraduate degree in law, focusing on specialized areas such as international law, human rights, or intellectual property.

• It is highly valued in the legal field for providing in-depth knowledge and expertise in specific areas of law.

• Many professionals pursue LLM to advance their legal careers, work in specialized legal field...read more

Left Join is a type of join operation in SQL that returns all rows from the left table and the matched rows from the right table.

• Left Join is used to combine rows from two or more tables based on a related column between them.

• If there is no match found in the right table, NULL values are returned for the columns of the right table.

• Example: SELECT * FROM table1 LEFT JOIN table2 ON table1.id = table2.id;

Redux is a predictable state container for JavaScript apps.

• Redux is commonly used with React to manage the state of an application.

• It helps in maintaining a single source of truth for the state.

• Actions are dispatched to update the state in a predictable way.

• Reducers are used to specify how the state changes in response to actions.

• Selectors can be used to extract specific pieces of state from the store.

• Example: Redux is used in e-commerce websites to manage the shopping cart s...read more

Serverless is a cloud computing model where the cloud provider manages the infrastructure and automatically allocates resources.

• Serverless allows developers to focus on writing code without worrying about infrastructure management.

• It is event-driven and scales automatically based on demand.

• Examples include AWS Lambda, Azure Functions, and Google Cloud Functions.

Hoisting is a JavaScript mechanism where variable and function declarations are moved to the top of their scope.

• Variable declarations are hoisted but not their values

• Function declarations are fully hoisted

• Let and const declarations are not hoisted

Normalization is the process of organizing data in a database to reduce redundancy and improve data integrity.

• Normalization is used to eliminate redundant data and ensure data dependencies are logical.

• It involves dividing a database into two or more tables and defining relationships between them.

• Normalization helps in reducing data anomalies and inconsistencies.

• Examples of normalization forms include 1NF, 2NF, 3NF, and BCNF.

EF Core is a lightweight, extensible, open-source ORM framework for .NET applications.

• EF Core stands for Entity Framework Core

• It allows developers to work with databases using .NET objects

• Supports LINQ queries, change tracking, and database migrations

• Can be used with various database providers like SQL Server, SQLite, MySQL, etc.

Answers to common interview questions for Full Stack Developer position.

• For error in Laravel storage bytes, increase the storage limit in the configuration file or clear the storage cache.

• Static keyword in PHP is used to declare class properties or methods that can be accessed without instantiating the class.

• Final keyword in PHP is used to prevent a class from being extended or a method from being overridden.

• An interface in PHP defines a contract that classes must follow by i...read more

SDLC stands for Software Development Life Cycle, which is the process of developing software. STLC stands for Software Testing Life Cycle, which is the process of testing software.

• SDLC involves planning, designing, coding, testing, and deployment of software.

• STLC involves test planning, test case development, test execution, and test closure.

• SDLC focuses on the overall development of software, while STLC focuses on ensuring the quality of the software through testing.

• SDLC is ...read more

The existing project is a software application for managing inventory in a retail store.

• The project uses a database to store product information, stock levels, and sales data.

• It includes features for adding new products, updating stock levels, and generating sales reports.

• The application has a user interface that allows store employees to easily perform inventory management tasks.

• It also has a backend system that handles data processing and synchronization with other systems....read more

Microsoft .NET is a software framework for building and running applications on Windows. It consists of different versions like .NET Framework, .NET Core, and .NET 5.

• .NET Framework is the original version of .NET, primarily for Windows desktop applications.

• .NET Core is a cross-platform version of .NET for building modern cloud-based applications.

• .NET 5 is the latest version that unifies .NET Framework and .NET Core into a single platform.

• Each version of .NET comes with its ow...read more

Object-oriented programming concepts include inheritance, encapsulation, polymorphism, and abstraction.

• Inheritance: Allows a class to inherit properties and behavior from another class.

• Encapsulation: Bundling data and methods that operate on the data into a single unit.

• Polymorphism: Ability to present the same interface for different data types.

• Abstraction: Hiding the complex implementation details and showing only the necessary features.

The four pillars of OOP are encapsulation, inheritance, polymorphism, and abstraction.

• Encapsulation: Bundling data and methods that operate on the data into a single unit. Example: Class in Java.

• Inheritance: Ability of a class to inherit properties and behavior from another class. Example: Subclass extending a superclass.

• Polymorphism: Ability to present the same interface for different data types. Example: Method overloading in Java.

• Abstraction: Hiding the complex implementat...read more

Reverse a string and check if it is a palindrome

• Reverse the string using built-in functions or manually

• Compare the reversed string with the original string to check if it is a palindrome

• Ignore spaces and punctuation when checking for palindrome

SDLC stands for Software Development Life Cycle, which is a process used by software development teams to design, develop, and test high-quality software products. STLC stands for Software Testing Life Cycle, which is a subset of SDLC focused on testing activities.

• SDLC involves phases like planning, analysis, design, implementation, and maintenance.

• STLC involves phases like test planning, test design, test execution, and test closure.

• SDLC is focused on the overall development...read more

I will draw a pyramid pattern using Python language.

• Use nested loops to print spaces and stars in a pyramid shape

• Start with 1 star at the top and increase stars in each row

• Decrease spaces in each row to create the pyramid shape

My sales approach is consultative and relationship-focused, aiming to understand the client's needs and provide tailored solutions.

• Building strong relationships with clients to understand their needs

• Listening actively to identify pain points and challenges

• Offering customized solutions that address specific client needs

• Providing ongoing support and follow-up to ensure client satisfaction

Agile methodology is a software development approach that emphasizes flexibility, collaboration, and iterative development.

• Iterative development with short, time-boxed iterations called sprints

• Frequent collaboration between cross-functional teams

• Adaptability to changing requirements and feedback

• Focus on delivering working software in small increments

• Use of tools like Scrum, Kanban, and Lean to manage projects