L&T Technology Services Technical Lead Interview Questions, Process, and Tips

Dependency injection is a design pattern in which components are given their dependencies rather than creating them internally.

• Dependency injection helps in achieving loose coupling between classes.

• It allows for easier testing and maintenance of code.

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

Dependency injection is a design pattern where objects are passed their dependencies rather than creating them internally. Inversion of Control (IoC) is a broader concept where the control of object creation is inverted from the application to a framework.

• Dependency injection is a technique to achieve Inversion of Control (IoC)

• In DI, objects are given their dependencies rather than creating them internally

• IoC is a desi...read more

Abstract class can have both abstract and non-abstract methods, while interface can only have abstract methods.

• Abstract class can have constructors, fields, and methods, while interface cannot have any of these.

• A class can implement multiple interfaces but can only inherit from one abstract class.

• Abstract classes are used to provide a common base for multiple classes, while interfaces are used to define a contract for ...read more

TCP is connection-oriented, reliable, and slower. UDP is connectionless, unreliable, and faster.

• TCP is connection-oriented, meaning a connection is established before data is sent.

• TCP is reliable, as it ensures all data is received in the correct order.

• TCP is slower than UDP due to the overhead of establishing a connection and error-checking.

• UDP is connectionless, meaning data can be sent without establishing a connect...read more

OOPS (Object-Oriented Programming) is a programming paradigm based on the concept of objects, which can contain data in the form of fields and code in the form of procedures.

• OOPS focuses on creating reusable and modular code by organizing it into objects.

• It involves concepts like classes, objects, inheritance, polymorphism, and encapsulation.

• Example: Inheritance allows a class to inherit properties and behavior from an

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

• Model represents the data and business logic of the application

• View is responsible for displaying the data to the user

• Controller acts as an intermediary between Model and View, handling user input and updating the Model accordingly

The .Net framework is better due to its versatility, performance, and strong community support.

• Versatile - Supports multiple languages like C#, F#, and Visual Basic

• Performance - Optimized for Windows environments and offers high performance

• Strong community support - Large community of developers and resources available

• Integration with Microsoft technologies - Seamless integration with other Microsoft products like Azur

C language is a high-level programming language known for its efficiency and flexibility.

• C language was developed by Dennis Ritchie at Bell Labs in the early 1970s.

• It is widely used for system programming, embedded systems, and software development.

• C is a procedural language with a rich set of built-in functions and operators.

• Example: printf() function is used to print output in C language.