Enqos Software Developer Interview Questions and Answers

There was aptitude test out of which 12 candidate selected

Q1. Asked me about my project in details
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Q2. What does group by do in SQL.
Ans. 
GROUP BY in SQL is used to group rows that have the same values into summary rows.
• GROUP BY is used with aggregate functions like COUNT, SUM, AVG, etc.

• It is used to summarize data by grouping rows based on specified columns.

• GROUP BY is often used in conjunction with the SELECT statement.
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Q3. Then asked about spring boot
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Q1. Explain OOPS Concept ?
Ans. 
OOPS (Object-Oriented Programming) is a programming paradigm based on the concept of objects, which can contain data and code.
• OOPS focuses on creating objects that interact with each other to solve problems.

• It involves concepts like classes, objects, inheritance, polymorphism, and encapsulation.

• For example, a class 'Car' can have objects like 'Toyota', 'Honda', etc., each with their own properties and methods.

• Inheritan...read more
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Q1. What is dependency injection
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Dependency injection is a design pattern in which components are given their dependencies rather than creating them internally.
• Dependency injection helps in achieving loose coupling between classes.

• It allows for easier testing by providing mock dependencies.

• There are three types of dependency injection: constructor injection, setter injection, and interface injection.
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Q2. What is state in react
Ans. 
State in React is a JavaScript object that stores data and determines how a component renders and behaves.
• State is mutable and can be updated using the setState() method

• State should be used for data that will change over time and affect the component's rendering

• State should not be modified directly, use setState() instead
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Practical Question based on case study

Q1. More about the Techno Managerial
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Q2. More about the Techno functional round
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Q3. Technical Question
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Q4. Related to Skills
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Q5. Based on work we did
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Q1. Technical round interview with Java Spring Boot questions
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Q1. Simple question not very hard related to java
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Round duration - 30 minutes
Round difficulty - Easy

Basic questioning about my work experiences, things I have developed and created, my work experience(internships). The challenges which I have faced and how I overcame them. Basic questions about some android concepts

Q1. What puzzles were asked during the interview, and can you describe the projects you discussed?
Ans. 
Tip 1: Create some good projects and keep learning
Tip 2: Have knowledge in deep about the concepts you have implemented while working on the projects
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Round duration - 45 minutes
Round difficulty - Medium

The interviewer was very friendly and asked about various things and tried to judge my understanding of the projects and how deep I know about the concepts I have implemented in my projects

Q1. RxJava
RxJava
Ans. 
Tip 1: Just know about various new technogies which are currently trending in the market
Tip 2: Keep yourself updated and have a community of fellow developers
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Round duration - 40 minutes
Round difficulty - Medium

This was a system design round

Q1. Can you explain the fragment lifecycle in Android system design?
Ans. 
Tip 1: Keep reading several blogs
Tip 2: Deep understanding of the concepts you have implemented in your projects
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