Gemini Solutions Software Engineer Interview Questions and Answers

Q1. Sql server table releated questions by the team
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Q1. What is threadlevel data paga and clipboard, difference between these two
Ans. 
Threadlevel data page and clipboard are both storage areas in Pega platform, but with different scopes.
• Threadlevel data page is a storage area that is specific to a single thread of execution.

• Clipboard is a storage area that is shared across threads and is used to store data that needs to be accessed across multiple requests.

• Threadlevel data page is created and destroyed with the thread, while clipboard persists across...read more
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Q2. What is declare expression,how to configure
Ans. 
Declare expression is a rule that defines a value or a property in Pega Platform.
• Declare expressions are used to calculate values that are used in decision-making.

• They can be configured in the Declare Expression rule form.

• They can reference properties, functions, and other declare expressions.

• They can be used in data transforms, activities, and other rules.

• Examples include calculating a customer's age based on their bi...read more
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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
Ans. 
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
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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. Technical questions based on profile.
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Q2. OOPS Questions, Database Questions
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Coding test based on the profile.