Volansys Technologies Associate Engineer Interview Questions and Answers

15 Min for the aptitude test and 15 Min for verbal and Quantitative Aptitude

3 coding questions were asked. Level of Difficulty is from Easy-Medium. Someone with basic knowledge in computer programming and fundamentals can easily do it.

Print a specific pattern using any programming language.

Q1. What is a class in Object-Oriented Programming (OOP)?
Ans. 
A class in OOP is a blueprint for creating objects, defining their properties and behaviors.
• Classes are templates for creating objects in OOP

• They define the properties (attributes) and behaviors (methods) of objects

• Objects are instances of classes, each with its own unique data

• Inheritance allows classes to inherit properties and behaviors from other classes

• Encapsulation ensures that the data is hidden and can only be a...read more
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Q2. What is the difference between an abstract class and an interface?
Ans. 
Abstract class can have both abstract and non-abstract methods, while interface can only have abstract methods.
• Abstract class can have constructors, fields, and methods, while interface cannot have any implementation.

• A class can only extend one abstract class, but can implement multiple interfaces.

• Abstract classes are used to define common characteristics of subclasses, while interfaces are used to define contracts for...read more
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Q3. What is joining and creating an inner join query?
Ans. 
Joining is combining data from two or more tables based on a related column, while an inner join query retrieves only the matching records.
• Joining is used to combine data from multiple tables in a database.

• Inner join query retrieves only the records that have matching values in both tables.

• Syntax for inner join: SELECT columns FROM table1 INNER JOIN table2 ON table1.column = table2.column;

• Example: SELECT orders.order_i...read more
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Q1. Why should I hire u
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Q1. Oops concepts, core java
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Q2. Java 8 stream api and lambda
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Q1. What was your job role in previous company.
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Q2. How many years of experience do you have.
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Q1. Can you brief about your technical skills.
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Q2. Tell me about yourself.
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Q1. Oops, Data Structure, python and c++ briefly some core questions about ECE as i am a ECE student.
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Q2. Basic idea about OOps
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Q3. Briefly about Python and C++ and thier difference
Ans. 
Python and C++ are both programming languages, but Python is interpreted and dynamically typed while C++ is compiled and statically typed.
• Python is easier to learn and write code quickly, while C++ is more complex and requires more time to write code.

• Python is often used for scripting, web development, and data analysis, while C++ is used for system programming, game development, and high-performance computing.

• Python h...read more
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Q1. Sql is the most important , Focus on Joins ,Sub query and Sql basics
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Q2. Joining tables with different joins
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Joining tables with different joins in SQL
• Use INNER JOIN to return rows when there is at least one match in both tables

• Use LEFT JOIN to return all rows from the left table and the matched rows from the right table

• Use RIGHT JOIN to return all rows from the right table and the matched rows from the left table

• Use FULL JOIN to return rows when there is a match in one of the tables
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