Jocata Financial Advisory and Technology 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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Focused on the functionality of hashmaps and sorting.

Q1. Follow up questions based on coding test.
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Q2. Multiple systems design questions starting with different design patterns and principles, Database sharding, cap theorem. Multiple concepts from springboot were asked.
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Q1. More focused on system design, task scheduler and db schema etc. Also multiple questions from resume.
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Q1. What is dependency injection
Ans. 
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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