HCL Infosystems Senior Software Engineer Interview Questions and Answers

Q1. What are new features in java 11?
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Q2. Explain parameterised testing in juint?
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Q1. What is the SQL query to find the second highest rank in a dataset?
Ans. 
Use a subquery to find the second highest rank in a dataset.
• Use a subquery to select the maximum rank from the dataset.

• Then use another subquery to select the maximum rank that is less than the maximum rank found in the first subquery.
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Q2. What is a program to determine whether a number is odd or even?
Ans. 
A simple program using modulo operator to determine if a number is odd or even.
• Use the modulo operator (%) to check if the number divided by 2 leaves a remainder

• If the remainder is 0, the number is even. If the remainder is 1, the number is odd

• Example: num % 2 == 0 (even), num % 2 == 1 (odd)
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API Design using Node and Mongo

NodeJs , JavaScript, System Design

Related to the Magent

Magento coding test create module

Q1. Explain projects
Ans. 
Projects are specific tasks or assignments that require a team to work together to achieve a common goal.
• Projects involve a defined scope, timeline, and budget.

• They require a team of individuals with different skills and expertise.

• Examples include developing a new software application, implementing a new system, or conducting a research study.
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Q2. Tech stack u worked on
Ans. 
I have worked on a variety of tech stacks including Java Spring, React, Node.js, and MongoDB.
• Java Spring

• React

• Node.js

• MongoDB
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Q3. Collection framework
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Q4. Spring Framework questions
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Q1. Springs questions
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Q2. Working knowledge in Java
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Q1. Java 8 features
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Q2. Explain lamda function and thread concept
Ans. 
Lambda function is an anonymous function used for short tasks. Threads allow for concurrent execution in a program.
• Lambda function is a concise way to define small functions without a name.

• Threads allow multiple tasks to run concurrently in a program.

• Lambda functions are often used in functional programming and for callbacks.

• Threads can improve performance by utilizing multiple cores of a CPU.

• Example of lambda function...read more
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Q3. Explain cicd functionality
Ans. 
CI/CD stands for Continuous Integration/Continuous Deployment, a practice in software development to automate the process of testing and deploying code changes.
• CI/CD automates the process of integrating code changes from multiple developers into a shared repository.

• It includes automated testing to ensure that code changes do not break existing functionality.

• CI/CD also automates the deployment of code changes to product...read more
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Q1. What is DI in Asp.ner core
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Q2. What is Middleware
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Q3. What is Threading
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Q4. Async and await
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