Vanenburg Interview Questions, Process, and Tips

Normal Aptitude and Basics of the Computer Core Questions

Q1. Tell about Yourself
Ans. 
I am a software developer with 5 years of experience in developing web applications using Java, Spring Boot, and Angular.
• 5 years of experience in software development

• Proficient in Java, Spring Boot, and Angular

• Strong problem-solving skills

• Experience working in Agile development environment

• Passionate about learning new technologies
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Q2. Write the code abt the right binary tree?
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Q1. Normal Hr Questions
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General aptitude questions and technical questions

Q1. Array data structure based programming question
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Q2. Object Oriented Programming concepts
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Q1. Describe OOPs with a real world example using your understanding.
Ans. 
OOPs is a programming paradigm based on the concept of objects, which can contain data in the form of fields and code in the form of procedures.
• OOPs focuses on creating objects that interact with each other to solve a problem.

• Encapsulation, inheritance, and polymorphism are key principles of OOPs.

• Example: In a car manufacturing company, a 'Car' object can have properties like 'model', 'color', and methods like 'startEn
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Q2. Programming exercises to demonstrate design and architecture knowledge
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Q1. Questions that will prove your commitment and integrity.
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Q1. Find the second largest number in an given array?
Ans. 
Iterate through the array to find the second largest number.
• Iterate through the array and keep track of the largest and second largest numbers.

• Compare each element with the largest and second largest numbers to update them accordingly.

• Return the second largest number once the iteration is complete.
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Q2. Find the frequency of given character in the given string?
Ans. 
Use a loop to iterate through the string and count the occurrences of the given character.
• Iterate through the string using a loop

• Check each character if it matches the given character

• Increment a counter if a match is found

• Return the counter as the frequency of the given character
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Q3. What is the spring boot and java version used in your project?
Ans. 
We are using Spring Boot 2.5.3 and Java 11 in our project.
• Spring Boot version: 2.5.3

• Java version: 11
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Q4. What is the use of transactional annotation?
Ans. 
Transactional annotation is used in Spring framework to manage transactions in a declarative way.
• Transactional annotation is used to define the scope of a single database transaction.

• It ensures that if any operation within the transaction fails, the entire transaction is rolled back.

• It simplifies the code by handling transaction management automatically.

• It can be applied at class level or method level in Spring applica
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Q5. Design employee database schema
Ans. 
Design a database schema for an employee database
• Create a table for employees with fields like employee_id, name, department, position, etc.

• Consider adding tables for departments, positions, and any other related entities

• Include relationships between tables using foreign keys

• Ensure data integrity with constraints like unique keys and not null constraints
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Q6. What is factory design patterns and give one example for it
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Factory design pattern is a creational pattern that provides an interface for creating objects in a superclass, but allows subclasses to alter the type of objects that will be created.
• Factory design pattern is used to create objects without specifying the exact class of object that will be created.

• It provides a way to delegate the instantiation logic to child classes.

• One example is the Factory Method pattern, where a s...read more
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