Infosys Software Engineering Specialist Interview Questions and Answers

Q1. Java 8 questions date,stream
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Q1. Java,Java 8 exceptions project related questions
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Q1. HR round for final discussion
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Coding questions will be in data structures and algorithms. Mostly from binary tree, linked list, and tree map. Interviewer will ask depth about space and time complexity

Q1. 1. Executor service in java 2. String array coding questions 3. Design pattern with industry example (in your current project) 4. Async communication between microservices 5. Event based architecture 6...read more
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Q2. 12. Spring boot annotations ( you probably never heard ) like sneakythrows 13. Integration test
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Q1. Manager round most of the question are scenario based like conflict management, stakeholders management, product support, impact in production delivery
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Q1. Even hr will ask behaviour questions
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Given some JavaScript program to solve

Q1. Difference between Pure and Impure Pipe?
Ans. 
Pure pipes do not have any side effects and always return the same output for the same input, while impure pipes can have side effects and may not return the same output for the same input.
• Pure pipes are stateless and deterministic.

• Impure pipes can have side effects like modifying global variables or making network requests.

• Pure pipes always return the same output for the same input.

• Impure pipes may not return the same...read more
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Q2. Explain Angular life cycle hook with example
Ans. 
Angular life cycle hooks are methods that allow you to tap into specific points in a component's life cycle.
• ngOnChanges: called when an input property changes

• ngOnInit: called once after the first ngOnChanges

• ngDoCheck: called during every change detection run

• ngAfterContentInit: called after content is projected into the component

• ngAfterContentChecked: called after every check of projected content

• ngAfterViewInit: called ...read more
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Q3. What is interceptor?
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An interceptor is a software component that intercepts incoming and outgoing requests, allowing for manipulation or monitoring of the data.
• Interceptors are commonly used in web development frameworks to add cross-cutting concerns such as logging, authentication, or caching.

• They can be used to modify the request or response before it reaches the intended destination.

• Examples include HTTP interceptors in AngularJS or req
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Q1. How axios is different from fetch API?
Ans. 
Axios is a third-party library that provides more features and flexibility than the fetch API.
• Axios allows for easy cancellation of requests.

• Axios has built-in support for handling request and response interceptors.

• Axios can handle request and response transformations.

• Axios has a larger community and more documentation than fetch API.

• Fetch API is built into modern browsers and requires no additional installation or set
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Q2. What is HOC in React?
Ans. 
HOC stands for Higher Order Component in React.
• HOC is a function that takes a component and returns a new component with additional functionality.

• It is used for code reuse, logic abstraction, and render hijacking.

• Examples of HOCs are connect() and withRouter() in React-Redux and React-Router respectively.
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Q3. What is map, filter and reduce in JavaScript?
Ans. 
Map, filter and reduce are higher-order functions in JavaScript used to manipulate arrays.
• Map transforms each element of an array into a new array based on a provided function.

• Filter creates a new array with all elements that pass a test implemented by a provided function.

• Reduce applies a function to each element of an array and reduces the array to a single value.

• These functions are commonly used in functional program...read more
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Q1. It was mostly scenario based questions on react, next.js, express and agile framework.
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Q2. The interviewer asked about previous projects.
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Q1. The HR round was the salary discussion round.
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Q1. About past projects Interface, class and objects Dependency injection Spring annotations
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Q1. React vs angular vs javascript React hooks React lifecycle Parent child class data passing
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Q1. It was managerial round where I was asked about my past projects and challenges
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Q1. What is routing,hooks,service, directives.
Ans. 
Routing, hooks, service, and directives are all important concepts in software engineering.
• Routing refers to the process of determining how an application responds to a client request.

• Hooks are functions that allow developers to tap into the lifecycle of a component or application.

• Services are reusable pieces of code that provide functionality to an application.

• Directives are markers on a DOM element that tell AngularJ...read more
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Q1. Senario base questions
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