Infosys Developer Interview Questions and Answers

C++ is a compiled language while Java is an interpreted language. Both have their own advantages and disadvantages.

• C++ is faster and more efficient than Java due to its compiled nature.

• Java is more platform-independent and has better memory management.

• C++ is commonly used for system-level programming while Java is used for web and mobile applications.

• Choosing between the two depends on the specific project requirements and goals.

The most popular SDLC model is Agile.

• Agile is iterative and flexible, allowing for changes throughout the development process.

• It emphasizes collaboration and customer satisfaction.

• Other popular models include Waterfall, Spiral, and V-Model.

• Agile is commonly used in software development, but can be applied to other industries as well.

Entity Framework is an ORM tool for .NET applications. It allows developers to work with databases using objects.

• Entity Framework is a Microsoft product

• It supports various database providers such as SQL Server, MySQL, Oracle, etc.

• It uses LINQ to query data from the database

• It supports Code First, Database First, and Model First approaches

• Recorded details can be viewed using SQL Profiler or logging frameworks like Serilog

Defiance refers to resistance or disobedience, while first and default are different spellings of words with distinct meanings.

• Defiance implies a refusal to comply with authority or rules.

• First refers to the initial or primary thing in a sequence or list.

• Default refers to a pre-set value or option that is used when no other choice is made.

• Examples: Defiance - civil disobedience, First - first place in a race, Default - default font in a word processor.

Var is statically typed while dynamic is dynamically typed.

• Var is used to declare variables with a specific type at compile time.

• Dynamic is used to declare variables whose type is determined at runtime.

• Var is faster than dynamic because it doesn't require type checking at runtime.

• Dynamic is more flexible than var because it allows for late binding and duck typing.

• Example: var x = 5; dynamic y = "hello";

C and C++ are programming languages used for system and application development.

• C is a procedural language used for system programming and embedded systems.

• C++ is an object-oriented language used for application development and game programming.

• Both languages are compiled and have a strong influence on modern programming languages.

• C++ is an extension of C with additional features like classes, templates, and exceptions.

• Examples of C and C++ applications include operating syst...read more

CPP is better due to its performance, memory management, and object-oriented features.

• CPP is faster than many other programming languages due to its compiled nature.

• CPP allows for manual memory management, which can lead to more efficient use of resources.

• CPP supports object-oriented programming, which can make code more modular and easier to maintain.

• CPP has a large community and many libraries available, making it a versatile language for various applications.

Objects in programming are instances of classes that encapsulate data and behavior.

• Objects are created from classes, which act as blueprints for the object's structure and behavior

• Objects have attributes (data) and methods (behavior) that define their characteristics and actions

• Objects allow for modular and reusable code by grouping related data and functions together