JethiTech Full Stack Developer Interview Questions and Answers

Eq and iq test that contain you emotions management

Q1. $lookup in mongodb
Ans. 
The $lookup operator in MongoDB is used to perform a left outer join between two collections.
• Used to combine data from two collections based on a common field

• Requires a local field and a foreign field to match documents

• Returns an array of documents that include matched data from both collections
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Q2. $graphlookup in mongo db
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The $graphlookup operator in MongoDB is used to perform recursive queries on graph-like data structures.
• Used to perform recursive queries on graph-like data structures

• Can be used to traverse relationships between documents in a collection

• Helps in querying hierarchical data structures
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It was good and to the point

Q1. Just about the previous job
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Q2. Projects and stuff about the previous job
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Aptitude questions with some basic coding questions

They have given 3 coding questions and some pseudo codings

Q1. Tell about your self
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Q2. Some coding questions
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They just gave me an assessment with a few questions to test my subject knowledge

Q1. They asked me all the general questions and a few technical questions
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Q1. What are oops concepts in java, explain real time scenario
Ans. 
OOPs concepts in Java include inheritance, polymorphism, encapsulation, and abstraction.
• Inheritance allows a subclass to inherit properties and methods from a superclass.

• Polymorphism allows objects to take on multiple forms and behave differently based on their context.

• Encapsulation hides the implementation details of an object and only exposes necessary information.

• Abstraction allows for the creation of abstract class...read more
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Q2. Uses of interface, inheritance
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Interfaces define contracts for behavior, while inheritance allows for code reuse and polymorphism.
• Interfaces allow for loose coupling and abstraction, enabling multiple implementations of the same behavior.

• Inheritance allows for code reuse and extension of existing classes, reducing code duplication.

• Polymorphism allows objects of different classes to be treated as if they were of the same class, simplifying code and i
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Q3. SQL query for join of tables
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SQL query for joining tables
• Use JOIN keyword to combine two or more tables based on a related column

• Specify the columns to be selected using SELECT keyword

• Use ON keyword to specify the condition for joining the tables

• Different types of joins include INNER JOIN, LEFT JOIN, RIGHT JOIN, and FULL OUTER JOIN
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Q4. Java concepts used in your project
Ans. 
Used Java concepts such as inheritance, polymorphism, and exception handling in my project.
• Implemented inheritance to create a base class and derived classes with specific functionalities.

• Utilized polymorphism to allow objects of different classes to be treated as if they were of the same class.

• Implemented exception handling to handle errors and prevent program crashes.

• Used interfaces to define a set of methods that a ...read more
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Q5. Overloading vs overriding, practical uses
Ans. 
Overloading is having multiple methods with the same name but different parameters. Overriding is having a method in a subclass with the same name and parameters as a method in the superclass.
• Overloading is used to provide different ways to call a method with different parameters

• Overriding is used to provide a specific implementation of a method in a subclass

• Overloading is resolved at compile-time while overriding is r...read more
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Q1. In trend java questions
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Q1. Advance java questions, questions related to microservice and java 8
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Q1. General fit to profile filtration
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Q1. To the profile applied for
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Q2. Explain an actual component
Ans. 
An actual component is a reusable and modular piece of software that performs a specific function within a larger system.
• Components are often designed to be independent and can be easily integrated into different systems.

• Examples of components include buttons, input fields, and dropdown menus in a user interface.

• Components can have their own logic, styling, and functionality, making them versatile building blocks for s
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Q3. Design the architecture
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Designing the architecture for a software system involves planning the structure and components of the system.
• Identify the key components of the system and their interactions

• Choose appropriate technologies and frameworks for each component

• Consider scalability, performance, security, and maintainability

• Create a detailed diagram or documentation of the architecture
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Q1. Attitude towards work
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