24/7 Customer Software Development Engineer II Interview Questions and Answers

Q1. Mvc , mapping , rest endpoints
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Q2. Oops concepts from java
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Object-oriented programming concepts in Java
• Encapsulation: bundling data and methods together

• Inheritance: creating new classes from existing ones

• Polymorphism: using a single interface to represent different types

• Abstraction: hiding implementation details and providing a simplified view

• Encapsulation example: using private variables and public methods

• Inheritance example: creating a subclass that inherits properties and m...read more
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Q3. System design ques were asked
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It is Hacker rank test ,asked 2 questions and needs to solve in 1 hour

Q1. Tested problem solving
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Q1. Low level designing
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Q1. It is managerial round
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Mental and Verbal aptitude - 1 hour

Q1. Basic C++, DSA questions
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Question related to operating system and computer network

Q1. Traverse all child nodes in tree
Ans. 
Traverse all child nodes in a tree data structure
• Use depth-first or breadth-first traversal algorithms

• Recursively visit each child node starting from the root node

• Consider using a stack or queue data structure for traversal

• Example: Traverse all nodes in a binary tree
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Q1. Question related to cloud and oops
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Q1. Question related to my background and how web site work
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Q1. Basics of oops, .net framework and .net core
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Q2. Sql query for student department id
Ans. 
SQL query to retrieve student department id.
• Use SELECT statement to retrieve data

• Specify the columns to be selected, including the department id column

• Specify the table where the student data is stored

• Use WHERE clause to filter the results based on student information
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Q3. Solid principles and design patterns
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Q1. Asked to code palindrome
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Q2. Code duplicate string from main string and get index of sub string
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Code to find index of sub string in main string and duplicate the sub string
• Use a loop to iterate through the main string and check for the sub string

• If sub string is found, duplicate it and store the index

• Return the index of the duplicated sub string
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Q1. Manager asked me to code the count index of substring and sum of substring
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Q2. Questions as HR informed, it was worst and all interviews were scheduled at night time.he was more technical than the second round team lead instead of asking manager round
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1 coding question and MCQ on CS fundamentals were asked.

Q1. Questions were on my project. It was a full stack project on MERN. I was asked about non blocking IO, promises, alternatives to react.
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Q2. I was asked a DSA question to find the set of element that occurs twice in the array. I was expected to run the code.
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Q3. I was asked basics about cloud and if I have any related experience as the role would be devops.
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Q1. I was asked basics questions about myself. It was a very short 15 minute interview.
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