Dell EMC Front end Developer Interview Questions and Answers

Q1. About previous project
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Q1. Construct stack using queues
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Implement a stack using two queues
• Use two queues to simulate stack operations

• Push operation: Enqueue the element to queue1

• Pop operation: Dequeue all elements from queue1 to queue2, dequeue the last element from queue1, then swap the queues

• Top operation: Dequeue all elements from queue1 to queue2, dequeue the last element from queue1, store it, swap the queues, enqueue the stored element back to queue1, and return it

• Exa...read more
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Q2. M coloring graph
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You will need to create a working web app in vanilla JS.
need to implement the following things.
1. Fetch data from given REST api
2. Display data in List. add some css to show different type of items.
3. Implement text filter and other types of filter.
All needs to be implemented in vanilla JS

Q1. Javascript concepts Web fundamentals Promise Pollyfill
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Q1. System Design Round Design HLD/LLD for any game like chess/Snakes and ladder
Ans. 
Designing HLD/LLD for a game like chess or Snakes and Ladders
• Identify the game rules and mechanics

• Determine the game board and pieces

• Create a data model for the game state

• Implement game logic and rules using algorithms

• Design user interface and user experience

• Consider scalability and performance

• Test and debug the game thoroughly
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Q1. Hiring Manager round Asked to implement Dots and Square game
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Q1. They asked about current project.
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Q2. They have given some problem to write javascript code.
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Q1. React js basic questions
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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.
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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...read more
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Q1. Basic Company Details and Salary Negotiations
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90 minutes 3 coding questions

Q1. Wall the topics rite a code using of OOPS
Ans. 
Object-oriented programming (OOP) is a programming paradigm based on the concept of objects, which can contain data and code.
• Create classes to represent real-world entities

• Encapsulate data and behavior within classes

• Use inheritance to create relationships between classes

• Implement polymorphism to allow objects to be treated as instances of their parent class
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Q2. Polymorphism code using all the properties
Ans. 
Polymorphism allows objects of different classes to be treated as objects of a common superclass.
• Polymorphism is achieved through method overriding in subclasses.

• It allows for more flexibility and reusability in code.

• Example: Animal superclass with subclasses Dog and Cat, both overriding the makeSound() method.
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Q3. Inheritance and its types
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Inheritance is a mechanism in object-oriented programming where a class inherits properties and behaviors from another class.
• Types of inheritance include single inheritance, where a class inherits from only one parent class

• Multiple inheritance, where a class inherits from multiple parent classes (not supported in some languages)

• Multilevel inheritance, where a class inherits from a class that itself inherits from anothe...read more
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Q1. Tell me about yourself
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Q2. Basic hr questions only
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6o minutes test with 2 coding question of your preference