Gemini Solutions HR Trainee Interview Questions and Answers

Q1. Question related to FEM,
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Q2. Questions related to SOM, Projects, basic of coding etc
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Q1. Sql joins and types of joins
Ans. 
SQL joins are used to combine rows from two or more tables based on a related column between them.
• Types of joins include INNER JOIN, LEFT JOIN, RIGHT JOIN, and FULL JOIN.

• INNER JOIN returns rows when there is at least one match in both tables.

• LEFT JOIN returns all rows from the left table and the matched rows from the right table.

• RIGHT JOIN returns all rows from the right table and the matched rows from the left table.

• F...read more
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Q2. Powerbi and done projects
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Q1. Find repeated nos in arrays
Ans. 
Find repeated numbers in arrays of strings
• Iterate through each string in the array

• Convert each string to an array of numbers

• Use a hash map to track the frequency of each number

• Identify and return the repeated numbers
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Q1. Current company work, reason for change, etc.
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Q1. What is components
Ans. 
Components are reusable and independent parts of a software system that perform specific functions.
• Components are modular and can be easily integrated into different parts of a software system.

• They help in organizing code and promoting reusability.

• Examples include buttons, input fields, and dropdown menus in a user interface.
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Q2. What is react.js
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React.js is a JavaScript library for building user interfaces.
• React.js is developed and maintained by Facebook.

• It allows developers to create reusable UI components.

• React.js uses a virtual DOM for better performance.

• It follows a component-based architecture.

• React.js can be used for building single-page applications.
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Q3. What is state and props
Ans. 
State and props are two important concepts in React for managing data and passing data between components.
• State is used to store and manage data within a component. It is mutable and can be updated using setState() method.

• Props (short for properties) are used to pass data from parent components to child components. Props are immutable.

• State is internal to a component, while props are external and passed down from paren...read more
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Q4. What is hooks in reactjs
Ans. 
Hooks in ReactJS are functions that let you use state and other React features without writing a class.
• Hooks were introduced in React 16.8 to allow functional components to have state and lifecycle methods.

• Some commonly used hooks are useState, useEffect, useContext, and useRef.

• Hooks can be used to manage component state, perform side effects, and access context in functional components.

• Example: useState hook allows yo...read more
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Q1. What is components in react
Ans. 
Components in React are reusable, independent pieces of code that manage their own state and can be composed together to build complex UIs.
• Components are the building blocks of a React application

• They can be either functional components or class components

• Components can have their own state and lifecycle methods

• Components can be reused and composed together to create complex UIs

• Example:

  , ,
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Q1. How to switch variable
Ans. 
To switch variable values, use a temporary variable to hold one value while swapping the other.
• Create a temporary variable to hold the value of one variable

• Assign the value of the second variable to the first variable

• Assign the value of the temporary variable to the second variable
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Q2. They about your introduction and background
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