Deloitte Senior Consultant Interview Questions, Process, and Tips

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?
Ans. 
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?
Ans. 
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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Q1. Java related questions asked
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Q2. Agile related questions asked
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Q3. Only 2 round were there
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Q1. Present best of yourself G
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Q1. End to End R2R Process End to End P2P process What is new in S4 Hana How can you optimise the business process by using S/4 Hana Major charactristics of ACDOCA
Ans. 
The end-to-end R2R process involves all the steps from recording financial transactions to generating financial statements.
• The R2R process starts with recording financial transactions in the general ledger.

• It includes sub-processes like accounts payable, accounts receivable, and fixed asset accounting.

• The process also involves reconciling accounts, closing the books, and generating financial statements.

• S/4 Hana can opt...read more
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Q1. How do you approach a conflict
Ans. 
I approach conflicts by actively listening, understanding perspectives, and finding common ground for resolution.
• Actively listen to all parties involved to understand their perspectives

• Stay calm and composed to avoid escalating the conflict

• Seek common ground and areas of agreement to find a resolution

• Communicate effectively and respectfully to address concerns

• Consider alternative solutions and compromise if necessary
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Q2. Give an example and what resolution did u provide.
Ans. 
Provided resolution for an example
• Example: Resolved a client's issue with inefficient inventory management by implementing a new software system.

• Example: Resolved a conflict between team members by facilitating open communication and finding a compromise.

• Example: Resolved a technical problem with a software application by identifying and fixing a bug in the code.

• Example: Resolved a customer complaint by offering a refu...read more
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Q3. What is the biggest risk to a project.
Ans. 
The biggest risk to a project is poor communication.
• Poor communication can lead to misunderstandings and delays.

• Lack of clear communication can result in misalignment of goals and objectives.

• Inadequate communication can lead to conflicts and issues not being addressed in a timely manner.

• Communication breakdowns can hinder collaboration and coordination among team members.

• Failure to communicate effectively with stakehol...read more
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Need to score more than 70% to qualify for next round

Q1. All concepts and handson on react native
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Q1. Security related question on hybrid devices
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Q1. Salary discussion
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