Uplers Interview Questions and Answers

Mostly asked about the aptitude and English grammar test with some reasoning questions

Q1. Process knowledge about the post the question where just basic understanding questions about the Salesforce marketing cloud and some related to the organisation and some HR questions
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Q2. What is Salesforce Marketing cloud
Ans. 
Salesforce Marketing Cloud is a platform for creating and managing personalized customer journeys across email, mobile, social, web, and advertising channels.
• Allows businesses to create targeted marketing campaigns

• Provides tools for email marketing, social media advertising, and customer segmentation

• Helps businesses track and analyze customer interactions to optimize marketing strategies
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Q3. Difference between digital Marketing and traditional marketing
Ans. 
Digital marketing uses online channels like social media and email, while traditional marketing uses offline channels like TV and print.
• Digital marketing is more cost-effective and measurable than traditional marketing.

• Digital marketing allows for targeted advertising based on demographics and interests.

• Traditional marketing relies on physical materials like brochures and billboards.

• Digital marketing can reach a larger...read more
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Q4. Basic questions about marketing cloud
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Q5. And some basic questions related to company and personal
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Q1. Can you outline a simple strategy for fallback error handling in a Node.js application using async/await?
Ans. 
Use try-catch blocks to handle errors in async/await functions in Node.js applications.
• Wrap the async function in a try block and catch any errors using a catch block.

• Use the throw keyword to throw custom errors within the async function.

• Handle promise rejections using the catch block of the async/await function.

• Use the finally block to execute cleanup code regardless of whether an error occurred or not.
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Q1. What are design patterns in laravel ?
Ans. 
Design patterns in Laravel are reusable solutions to common problems in software design.
• Design patterns help in organizing code and improving code reusability.

• Some common design patterns in Laravel include Singleton, Factory, Repository, and Observer.

• Singleton pattern ensures that only one instance of a class is created.

• Factory pattern is used to create objects without specifying the exact class of object that will be ...read more
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Q1. What are Facades in laravel?
Ans. 
Facades in Laravel provide a simple and convenient way to access classes and services from the container.
• Facades act as static proxies to underlying classes, allowing easy access to their methods.

• They provide a clean and expressive syntax for accessing services.

• Facades are used to access Laravel's core services, such as the database, cache, and session.

• They can be used to access custom classes and services registered i...read more
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Q1. What are higher order components
Ans. 
Higher order components are functions that take a component and return a new component with additional functionality.
• Higher order components are used for code reuse and logic sharing.

• They allow you to abstract common logic into a reusable component.

• Examples include components that handle authentication, data fetching, or styling.
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Q2. Diff between state amd props
Ans. 
State is mutable and controlled by the component itself, while props are immutable and passed down from parent components.
• State is managed within a component and can be changed using setState() method

• Props are passed down from parent components to child components

• State can be updated and re-render the component, while props are read-only
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Q3. How to pass data from child to parent
Ans. 
Using callback functions or props to pass data from child to parent in React
• Use callback functions to pass data from child to parent

• Pass data as props from child component to parent component

• Utilize state management libraries like Redux to pass data between components
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Q4. UseEffect , useState , useMemo hooks
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Q5. How you will optimize the performance of react application
Ans. 
Optimizing performance of React application involves code splitting, lazy loading, minimizing bundle size, using memoization, and optimizing render methods.
• Implement code splitting to load only necessary code for each route or component.

• Utilize lazy loading to load components only when they are needed.

• Minimize bundle size by removing unnecessary dependencies and using tools like Webpack Bundle Analyzer.

• Use memoization ...read more
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Q6. Explain context Api
Ans. 
Context API is a feature in React that allows sharing data between components without having to pass props through every level of the component tree.
• Context API provides a way to pass data through the component tree without having to pass props down manually at every level.

• It is useful for passing global data like themes, user authentication, etc. to multiple components.

• Context API consists of three main parts: Provide...read more
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Q7. What is meant by props drilling
Ans. 
Props drilling is the process of passing props from a parent component to multiple levels of nested child components.
• Props drilling can lead to a lot of unnecessary passing of props through intermediate components.

• It can make the code harder to maintain and understand.

• One way to avoid props drilling is by using React Context API or Redux for managing global state.
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Q8. What is meant by redux
Ans. 
Redux is a predictable state container for JavaScript apps.
• Redux is a state management library for JavaScript applications.

• It helps in managing the state of the application in a predictable way.

• Redux follows a unidirectional data flow pattern.

• Actions are dispatched to update the state in the store.

• Components can subscribe to the store to get updates.
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Q9. How you implement redux in react js
Ans. 
Redux is implemented in React by creating a store, defining actions, creating reducers, and connecting components.
• Create a Redux store using createStore() function from 'redux' package

• Define actions as plain objects with a 'type' property

• Create reducers to specify how the state changes in response to actions

• Connect components to the Redux store using connect() function from 'react-redux' package
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Q1. Angular concepts, javascript concepts
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Coderbyte - mcqs, 1 string qs, 2 angular qs

Html css question and some aptitude questions.. english also

Q1. What are css version
Ans. 
CSS has different versions like CSS1, CSS2, CSS3, and CSS4.
• CSS1 was released in 1996

• CSS2 was released in 1998

• CSS3 introduced new features like animations, transitions, and media queries

• CSS4 is still in development
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