Infosys Senior Systems Engineer Interview Questions, Process, and Tips

Q1. What is MVC and MVC life cycle
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MVC stands for Model-View-Controller, a software design pattern for organizing code. MVC life cycle involves request handling and response generation.
• Model represents the data and business logic

• View displays the data to the user

• Controller handles user input and updates the model

• MVC life cycle involves routing the request to the appropriate controller, processing the request, updating the model, rendering the view, and
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Q2. Difference between ASP. Net and ASP. Net core
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ASP.NET is a framework for building web applications on the .NET platform, while ASP.NET Core is a cross-platform, high-performance framework for building modern, cloud-based, internet-connected applications.
• ASP.NET is Windows-only, while ASP.NET Core is cross-platform and can run on Windows, macOS, and Linux.

• ASP.NET Core is open-source and modular, allowing developers to include only the necessary components in their ...read more
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Q1. Basic question form java, Sql,and most important spring boot
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Questions related my project in my current company

Its java and spring based assessment

Q1. I don't understand why but yes they again taken the technical interview and that interviewer is rude and looking like not interested to take a interview.
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Q1. ArrayList working
Ans. 
ArrayList is a dynamic array in Java that can grow or shrink in size.
• ArrayList is part of Java's Collection framework.

• It allows for easy insertion, deletion, and retrieval of elements.

• Example: ArrayList<String> names = new ArrayList<>();

• Example: names.add("John"); names.remove(0); String firstElement = names.get(0);
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Q2. Difference between ArrayList and HashMap
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ArrayList is a resizable array implementation while HashMap is a key-value pair storage with constant time complexity for basic operations.
• ArrayList stores elements in an ordered sequence and allows duplicate values.

• HashMap stores key-value pairs and does not allow duplicate keys.

• Accessing elements in ArrayList is done by index, while accessing elements in HashMap is done by key.

• ArrayList is not synchronized by default...read more
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Q3. List some stream Methods
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Stream methods are used in Java to perform operations on a sequence of elements.
• forEach() - performs an action for each element in the stream

• filter() - filters elements based on a given predicate

• map() - transforms elements using a given function

• reduce() - combines elements into a single result

• collect() - accumulates elements into a collection

• flatMap() - transforms each element into zero or more elements
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Q1. How do you react when there is a prod issue?
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I remain calm, analyze the issue, prioritize tasks, collaborate with team members, and work towards a resolution.
• Remain calm and composed to think clearly

• Analyze the issue to identify root cause

• Prioritize tasks based on impact and urgency

• Collaborate with team members for input and support

• Work towards a resolution efficiently
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Q2. Difficulty faced in current Job
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Q1. What is OIC ?
Ans. 
OIC stands for Oracle Integration Cloud, a platform that enables users to integrate applications, automate processes, and manage APIs.
• Oracle Integration Cloud (OIC) is a cloud-based integration platform offered by Oracle.

• It allows users to connect applications, automate processes, and create APIs.

• OIC provides pre-built integrations for popular applications like Salesforce, NetSuite, and ServiceNow.

• Users can also create...read more
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Q1. What is OOPS principles
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OOPS principles refer to Object-Oriented Programming concepts like 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 detail
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Q2. Java 8 based interview questions
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Q1. Explain routing in Angular in depth
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Routing in Angular is the process of navigating between different components based on the URL.
• Angular uses the Angular Router module to handle routing in applications.

• Routes are defined in the app-routing.module.ts file using the RouterModule.forRoot() method.

• Routes can have path, component, redirectTo, pathMatch, and children properties.

• RouterOutlet directive is used in the main app component to display the routed com...read more
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Q2. Dependency Injection in Angular
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Dependency Injection in Angular allows for providing dependencies to a class without creating them inside the class.
• In Angular, Dependency Injection is used to provide dependencies to a class instead of creating them inside the class.

• It helps in making classes more modular, reusable, and easier to test.

• Dependencies are typically provided in the constructor of a class using TypeScript.

• Example: @Injectable() decorator is...read more
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Q1. Basic info about package and responsibilities
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