Deloitte Senior Consultant Interview Questions, Process, and Tips

Basic aptitude questiond and logical reasoning

Q1. Informatica related basic auestions
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Q2. Regarding specific job role and responsbility
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Q1. .net related question must be prepared
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Q2. Oops concept question must be prepared
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Q1. Basics in kotlin
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Q2. Android basics questions
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Q1. What are the different LifeCycle Methods of React?
Ans. 
React has three main lifecycle methods: Mounting, Updating, and Unmounting.
• Mounting: These methods are called when an instance of a component is being created and inserted into the DOM.

• Updating: These methods are called when a component is being re-rendered as a result of changes to either its props or state.

• Unmounting: This method is called when a component is being removed from the DOM.
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Q2. What are the different hooks in React?
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React hooks are functions that allow you to use state and other React features in functional components.
• useState() - for managing state in functional components

• useEffect() - for performing side effects in functional components

• useContext() - for accessing context in functional components

• useReducer() - for managing complex state and actions in functional components

• useCallback() - for memoizing functions in functional com...read more
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Q3. What is useEffect Hook? What are dependency arrays wrt useEffect?
Ans. 
useEffect Hook is a built-in hook in React that allows you to perform side effects in functional components.
• useEffect Hook is used to handle side effects in functional components, such as fetching data, subscribing to events, or manipulating the DOM.

• It takes two arguments: a function that represents the side effect, and an optional dependency array.

• The function passed to useEffect will be executed after every render, u...read more
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Q4. Is Javascript a single/multi threaded language? If single threaded then how does backend calls work?
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Javascript is a single-threaded language, but it can handle asynchronous operations through callbacks and promises.
• Javascript is single-threaded, meaning it can only execute one task at a time.

• However, it can handle asynchronous operations by using callbacks, promises, and async/await.

• Backend calls in Javascript are typically made using asynchronous functions, allowing the program to continue executing other tasks whil...read more
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Q5. Name different package managers of Node JS and Javascript
Ans. 
npm is the most popular package manager for Node.js and JavaScript.
• npm (Node Package Manager) is the default package manager for Node.js and JavaScript.

• Yarn is an alternative package manager that offers faster and more reliable dependency management.

• pnpm is another package manager that uses a unique approach of hard-linking dependencies to save disk space.

• Bower is a package manager specifically designed for front-end w...read more
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Q6. How javascript runs on servers?
Ans. 
JavaScript can run on servers using server-side JavaScript platforms like Node.js.
• JavaScript can be executed on servers using server-side JavaScript platforms like Node.js.

• Node.js allows JavaScript to run on the server-side by providing a runtime environment.

• Server-side JavaScript enables developers to build scalable and high-performance web applications.

• Node.js uses the V8 JavaScript engine to execute JavaScript code ...read more
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Q1. Business related
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Q1. Sap related , general knowledge
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Q2. Business related and project related
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Q1. Data Science basics
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Q1. Questions on resume
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