Future Focus Infotech Senior Software Engineer Interview Questions and Answers

Q1. DIscussed on mIcroservice arch with AWS
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Q2. Question related to spring boot annotations
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Q3. Questions related to design pattern
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Q1. Question related to previous project.
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Q2. Some questions of MySQL
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Q3. Multithreading related questions,
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One coding test happen

Q1. Java questions, spring boot framework questions
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Q2. DSA using stream api
Ans. 
Using stream API for Data Structures and Algorithms
• Stream API in Java can be used to perform operations on collections like filtering, mapping, reducing, etc.

• It can be used for implementing various data structures and algorithms efficiently.

• For example, you can use stream API to find the sum of all elements in an array or filter out even numbers from a list.
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Q1. Java questions and spring boot questions
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Q2. One program using stream api
Ans. 
Using stream API to filter a list of numbers and find the sum of even numbers
• Use Stream.filter() to filter out even numbers

• Use Stream.mapToInt() to convert stream to IntStream

• Use IntStream.sum() to find the sum of even numbers
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Q1. What are closures
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Closures are functions that have access to variables from their containing scope even after the scope has closed.
• Closures allow functions to access variables from their outer function even after the outer function has finished executing.

• They are commonly used in event handlers, callbacks, and asynchronous programming.

• Closures help in maintaining state in functional programming.
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Q2. What is virtual DOM
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Virtual DOM is a lightweight copy of the actual DOM used for efficient updates in web development.
• Virtual DOM is a concept used in frameworks like React to improve performance by minimizing actual DOM manipulations.

• When changes are made to the virtual DOM, a comparison is done with the actual DOM to determine the minimal updates needed.

• This approach reduces the number of costly DOM operations, resulting in faster rende
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Q3. What are the data types in JS
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Data types in JavaScript include number, string, boolean, object, function, undefined, and null.
• Number - represents numeric data, e.g. 10, 3.14

• String - represents textual data, e.g. 'hello', '123'

• Boolean - represents true or false values, e.g. true, false

• Object - represents complex data structures, e.g. { key: 'value' }

• Function - represents executable code, e.g. function() { }

• Undefined - represents a variable that has ...read more
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Q1. Write react code for counter
Ans. 
React code for a simple counter
• Create a functional component for the counter

• Use useState hook to manage the count state

• Render the count value and buttons to increment and decrement the count
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Q1. Salary discussion
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Q1. Mostly asked c questions
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Q2. Project related questions
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Q1. Project related questions
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Q1. Salary discussion
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Q1. Technical discussion over how the microservices communicate internally.
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Q2. Immutable class implementation
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Q3. Singleton class implementation
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Q1. Explain some Design patterns
Ans. 
Design patterns are reusable solutions to common problems in software design.
• Design patterns help in creating flexible, maintainable, and scalable software.

• Some common design patterns include Singleton, Factory, Observer, Strategy, and Decorator.

• Singleton pattern ensures a class has only one instance and provides a global point of access to it.

• Factory pattern creates objects without specifying the exact class of object...read more
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Q2. Explain Delegates , async/ await
Ans. 
Delegates are type-safe function pointers in C# used for implementing callbacks. async/await is used for asynchronous programming in C#.
• Delegates in C# are similar to function pointers in C or C++. They allow methods to be passed as parameters to other methods.

• Async/await in C# is used for asynchronous programming, allowing methods to run asynchronously without blocking the main thread.

• Delegates can be used with async/
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Q1. What is a interceptor
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An interceptor is a design pattern commonly used in software development to capture and manipulate requests and responses.
• Interceptors can be used for logging, authentication, authorization, caching, error handling, etc.

• In Angular, interceptors can be used to modify HTTP requests before they are sent and responses before they are received.

• In Spring framework, interceptors can be used to intercept client requests and se
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Q2. What is Authentication, how to achieve it
Ans. 
Authentication is the process of verifying the identity of a user or system.
• Authentication involves confirming the identity of a user through credentials such as passwords, biometrics, or security tokens.

• Common methods of authentication include single-factor authentication (e.g. password) and multi-factor authentication (e.g. password + SMS code).

• Authentication can be achieved through protocols like OAuth, OpenID, SAML...read more
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Q1. What are the OOPS concepts
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Q2. MultiThreading, synchronization
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Q1. Tell me about yourself
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Q1. Appian based interview
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Q1. Appian based interview
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Q1. Client interview
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