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ONE BCG Front end Developer Interview Questions and Answers
ONE BCG Front end Developer Interview Experiences
1 interview found
Anonymous
Selected
I applied via Campus Placement and was interviewed before Dec 2023. There were 3 interview rounds.
It was logical based question
(1 Question)
- Q1. They usually asked m oops concepts and did ask me to some coding
(1 Question)
- Q1. They will ask about salary location etc
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Navin Kumar
I applied via Approached by Company and was interviewed in Sep 2024. There was 1 interview round.
(5 Questions)
- Q1. Discussion about my previous project
- Q2. Question on html, css, javascript & react
- Q3. Explain about promises
- Ans.
Promises are objects representing the eventual completion or failure of an asynchronous operation.
Promises are used to handle asynchronous operations in JavaScript.
They can be in one of three states: pending, fulfilled, or rejected.
Promises can be chained using .then() to handle success and .catch() to handle errors.
Example: const myPromise = new Promise((resolve, reject) => { ... });
- Q4. Use state, context api
- Q5. Box modelling in css, css pre processors
- Ans.
Box model in CSS refers to the way elements are rendered in a web page. CSS preprocessors like SASS or LESS help streamline CSS development.
Box model in CSS includes content, padding, border, and margin.
CSS preprocessors like SASS or LESS allow for variables, nesting, and mixins to be used in CSS.
Example: box-sizing: border-box; in CSS changes the box model to include padding and border in the element's total width and
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Skills evaluated in this interview
I applied via LinkedIn and was interviewed in Nov 2024. There was 1 interview round.
(2 Questions)
- Q1. Mostly js questions, not so many of angular or react.
- Q2. Like fizbuzz or things like that.
Interview Preparation Tips
(2 Questions)
- Q1. What is event bubbling
- Q2. What is TDD and why TDD
Interview Preparation Tips
I applied via Naukri.com and was interviewed in Oct 2024. There were 2 interview rounds.
Reactive form and crud operations pipes crud operations
(1 Question)
- Q1. Basic understanding of js and angular is must expeciallly how js works questions on arrays objects shallow deep copy
Selected
I applied via Naukri.com and was interviewed in Aug 2024. There was 1 interview round.
(2 Questions)
- Q1. Angular life cycle, angular loading and some scenarios about authentication
- Q2. Javascript out put based questions based on it's execution
Selected
I applied via Naukri.com and was interviewed in Apr 2024. There was 1 interview round.
(5 Questions)
- Q1. Caching Strategy
- Q2. What is micro Frontend architecture
- Ans.
Micro Frontend architecture is an approach to building front-end applications by breaking them down into smaller, independently deployable units.
Allows different teams to work on separate parts of the application
Each micro frontend can be developed using different technologies
Enables incremental upgrades and updates without affecting the entire application
Can improve performance by loading only the necessary components
...
- Q3. Pure and impure pipes in angular
- Ans.
Pure pipes in Angular are stateless and do not change the input data, while impure pipes can have side effects and change the input data.
Pure pipes are used for simple transformations like formatting dates or numbers.
Impure pipes are used for more complex transformations that require state or side effects.
Pure pipes are faster and more efficient as they only run when a pure change to the input data is detected.
Impure p...
- Q4. How to make singleton services multiton
- Ans.
Singleton services can be made multiton by maintaining a map of instances with unique keys.
Create a map to store instances with unique keys
Use a factory method to retrieve instances based on keys
Ensure that only one instance is created per key
- Q5. What is dependency injection
- Ans.
Dependency injection is a design pattern where components are given their dependencies rather than creating them internally.
Allows for easier testing by injecting mock dependencies
Promotes loose coupling between components
Improves code reusability and maintainability
Examples: AngularJS, Spring Framework
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Skills evaluated in this interview
Selected
I applied via Referral
(1 Question)
- Q1. It was a array question. I was told to return a object from a function which would contain getting all the array elements, adding a element, deleting a element. The test was on hacker rank.
(1 Question)
- Q1. This was basically a one on one round. I was asked basics of HTML, CSS and React. Questions like Hoisting, Prop Drilling, Context API. Not only do you need to know what the topics are. But I was asked to i...
(1 Question)
- Q1. Basic Company Details and Salary Negotiations
Interview Preparation Tips
- React.Js
- HTML
- Javascript
- OOPS
I applied via Naukri.com and was interviewed in Mar 2024. There was 1 interview round.
(5 Questions)
- Q1. What is aptitude
- Q2. Front end developer in how much are there
- Ans.
Front end developers are in high demand due to the increasing importance of user experience in web development.
Front end developers work on the client side of web development, focusing on the user interface and user experience.
They are responsible for implementing designs, optimizing performance, and ensuring cross-browser compatibility.
Front end developers often use HTML, CSS, and JavaScript, as well as frameworks lik...
- Q3. 3 or 4 maximum that's it
- Q4. What isreasoning
- Ans.
Reasoning is the mental process of thinking, understanding, and forming conclusions.
Reasoning involves using logic and critical thinking to make sense of information.
It helps in problem-solving and decision-making by analyzing and evaluating evidence.
Types of reasoning include inductive reasoning, deductive reasoning, and abductive reasoning.
- Q5. How to get success interview
Interview Preparation Tips
Skills evaluated in this interview
2 question 1 easy 2 medium dsa
2 codes of dsa and mcq.
(2 Questions)
- Q1. Code paring round
- Q2. Dsa question of graph
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