XpertDox SAS Developer Interview Questions and Answers

Q1. React Life cycle
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Q2. What React hooks have you utilized in your projects?
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Q3. What is Redux, and what are the differences between Redux and Context?
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Q4. What is the difference between visibility: hidden and display: none in CSS?
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Q5. What are JavaScript closures, the temporal dead zone (TDZ), hoisting, and the JavaScript engine?
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Identify the duplicate character in the string.

The first round comprised of 4 sections online questions including aptitude, logical, Coding questions, and technical portions (Test Duration: 90 mins):

Debugging: We had to choose a language and debug up to 7 questions most probably. Codes were very basic like sorting, etc. I completed 6 of them.

Coding: There were two medium-hard level questions.

Work-style Assessment: Just try to answer as an ideal employee. Make sure you answers don’t contradict each other.

Aptitude: Around 25 questions.

Q1. Find diameter of tree
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Q2. Count inversion
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Q1. Find n’th node from the end of a Linked List
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Q2. Find shortest distance between 2 points in a matrix, where 2 points can be anywhere
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Q1. Hoisting concept with examples and guess the output
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Q2. Map functionality with a call back function
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Q3. Copy object, spread operator usage . Deep copy, sallow copy
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Q4. Flexbox vs grid, dom, box model,
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Q5. React optimization, why React,
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Q1. Why did you choose the flask over the django and fastapi?
Ans. 
I chose Flask over Django and FastAPI due to its simplicity, flexibility, and ease of use for smaller projects.
• Flask is lightweight and minimalistic, making it easier to set up and use for smaller projects.

• Flask allows for more flexibility in terms of project structure and customization compared to Django.

• Flask is well-suited for rapid prototyping and smaller applications where simplicity is key.

• Django, on the other ha...read more
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Q2. Write the code for flask request and response block?
Ans. 
Flask request and response block code snippet
• Use Flask's request object to access incoming request data

• Use Flask's jsonify function to create a JSON response

• Handle different HTTP methods like GET, POST, etc. in the route function
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Q1. What is ORM? which ORM tool, have you used?
Ans. 
ORM stands for Object-Relational Mapping, a programming technique for converting data between incompatible type systems in object-oriented programming languages.
• ORM is used to map objects from an application to tables in a relational database.

• It simplifies data manipulation by allowing developers to work with objects instead of SQL queries.

• Popular ORM tools include Hibernate for Java, Entity Framework for .NET, and Seq
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Q2. Write ORM code for select item from table?
Ans. 
Use ORM code to select item from a table in database.
• Use ORM query methods like find(), findOne(), or where() to select items from a table.

• Specify the table name and any conditions for the selection.

• Example: User.find({ where: { id: 1 } }) will select a user with id 1 from the User table.
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Q1. Ask about filters
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Q2. What are all the maps used in tableau
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Q3. Difference between tree map and heat map
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Q4. What are Lods used
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Q5. Windows analytical function
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Q6. Real time question connecting to the data source facing any issues
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Q7. Any other bi tool you know
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Q8. What is groups and sets and when to you use
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Q9. Data source filter
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Q10. Handle null values
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Q1. Project related question , Interface , Abstraction
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Q1. Scenario based question
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Q1. Salary Discussioon
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Basic apptitude qwuestions were asked

Q1. Questions on java and cybersecurity what is cybersecurity what is malware and ransomeware
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Q2. What is java how is it different from python
Ans. 
Java is a statically typed, object-oriented programming language, while Python is dynamically typed and focuses on simplicity and readability.
• Java is statically typed, meaning variables must be declared with a specific data type, while Python is dynamically typed.

• Java is more verbose and requires more code to accomplish tasks compared to Python.

• Python emphasizes simplicity and readability, making it easier for beginner...read more
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Q1. Introduction why ltimindtree
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I chose Mindtree because of its reputation for innovation, collaborative work culture, and opportunities for growth.
• Reputation for innovation: Mindtree is known for its cutting-edge technology solutions and innovative projects.

• Collaborative work culture: Mindtree fosters a team-oriented environment where employees can learn and grow together.

• Opportunities for growth: Mindtree offers various training programs and career...read more
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Q2. Relocation situastion based questions
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