Nisum Software Engineer Interview Questions and Answers

About front end , html, css, reasoning,

Q1. What.is let , var, const
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Q1. What is angular
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Q2. Services in angular
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Q1. Communication skills.
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Q1. What is angular
Ans. 
Angular is a popular open-source front-end web application framework developed by Google.
• Angular is used for building dynamic web applications.

• It allows for the creation of single-page applications.

• Angular uses TypeScript for building applications.

• It provides features like data binding, dependency injection, and routing.

• Angular has a large community and ecosystem with many libraries and tools available.
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Q2. What is an angular
Ans. 
Angular is a popular open-source web application framework developed by Google.
• Angular is used for building dynamic web applications.

• It allows for the creation of single-page applications.

• Angular uses TypeScript for building applications.

• It provides features like data binding, dependency injection, and routing.

• Angular has a large community and ecosystem with many libraries and tools available.
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Q1. What is your name
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Q2. What is your strength
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Q1. Basic technical questions
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Q1. Technical questions Javascript basics, Node js
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Q1. Salary discussion
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Q1. What are features of OOPS
Ans. 
OOPS features include encapsulation, inheritance, polymorphism, and abstraction.
• Encapsulation: Bundling data and methods that operate on the data into a single unit (class).

• Inheritance: Ability to create new classes based on existing classes, inheriting their attributes and methods.

• Polymorphism: Ability to use a single interface for different data types or classes.

• Abstraction: Hiding the implementation details and show
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Q2. Difference between interface and abstract clas
Ans. 
Interface is a contract that defines the methods a class must implement, while abstract class can have both implemented and abstract methods.
• Interface methods are public and abstract by default, while abstract class can have abstract and non-abstract methods.

• A class can implement multiple interfaces but can only inherit from one abstract class.

• Interfaces are used for full abstraction, while abstract classes are used fo...read more
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Q1. What is react, What is dom, what is different between dom vs vdom
Ans. 
React is a JavaScript library for building user interfaces. DOM stands for Document Object Model. VDOM is a virtual representation of the DOM.
• React is a JavaScript library used for building user interfaces.

• DOM (Document Object Model) is a programming interface for web documents.

• VDOM (Virtual DOM) is a lightweight copy of the DOM used for performance optimization.

• The main difference between DOM and VDOM is that VDOM is ...read more
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Q1. Find repeated nos in arrays
Ans. 
Find repeated numbers in arrays of strings
• Iterate through each string in the array

• Convert each string to an array of numbers

• Use a hash map to track the frequency of each number

• Identify and return the repeated numbers
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Q1. Current company work, reason for change, etc.
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