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A Curated List of Some of the Commonly Asked Interview Questions and their Answers

Note: Currenlty I am collecting the questions, after collecting the questions, I will start writing the answers also. You can contribute also in Questions and Answers. Please give some stars ⭐ for the inspiration.

• HTML & CSS
• Git & GitHub
• JavaScript DOM
• ES6
• Java
• Python

• What do you understand about the universal selector?
• What do you understand by the universal sector?
• Differentiate between the use of ID selector and class selector.
• How can you use CSS to control image repetition?
• Are the HTML tags and elements the same thing?
• Difference between inline, block and inline-block element. Is it possible to change an inline element into a block level element?
• What are HTML meta tags?
• Differentiate between a div and a span.
• What do you understand by CSS box model?
• How is Cell Padding different from Cell Spacing?
• Define z-index.
• How do you specify units in the CSS? What are the different ways to do it?
• What are CSS Pseudo-elements and Pseudo-classes?
• What are the different Media types in CSS?
• What is SASS?
• What is the difference between an ‘ID’ and a ‘Class’?
• What is meant by specificity?
• What is the Box model in CSS? Which CSS properties are a part of it?
• What is VH/VW units in CSS?
• What is progressive rendering?
• What is the importance of CSS Sprites?

• What do you understand by the term ‘Version Control System’?
• What’s the difference between Git and GitHub?
• Name a few Git commands with their function.
• Difference between git fetch and git pull.
• What is a git repository?
• What does git clone do?
• What does git status command do?
• What is merge conflict?
• How can you remove a merge conflict?
• What does the command git config do?
• What does git add command do?
• Define 'index'.
• What is the functionality of git Is-tree?
• Explain head in terms of git and also explain the number of heads that can be present in a repository.

• What is DOM?
• What are the Different ways to get an element of DOM?
• Difference between Event Handler and Event listener?
• “Event Bubbling” mean in JavaScript?
• Explain different types of Event in javaScript
• Difference between event.paventDefault() and event.stopPropagation()?

• What is ES6? Have you ever used anything from ES6?
• Explain the difference between var, let and const.
• What is the arrow function, and how to create it?
• Give an example of an Arrow function in ES6? List down its advantages.
• Discuss spread operator in ES6 with an example.
• What do you understand about default parameters?
• What are template literals in ES6?
• Tell us the difference between Arrow function and Regular function.

• Why is Java Platform independent?
• What are different datatypes in Java and what are their ranges?
• What are some of the features of Java?
• Differentiate between a compiler and an interpreter?
• What are different types of Operators in Java?
• Explain about type casting or type conversion and their types in Java?
• Explain about String Class?
• What are different conditional statements in Java and explain them?
• Difference between the for loop and a while loop?
• How do you array input from the user?
• What are Methods in Java?
• Explain about parameter passing in java?
• What is Method Overloading and Method Overriding?
• What are Variable arguments and Command line arguments in java?
• What is OOP and explain it's principles in java?
• Difference between class and an object in java?
• How to write a class in java?
• What is Data Hiding?
• What are constructors in java?
• Explain about inheritance in java?
• Difference between generalisation and specialisation in java?
• Difference between this and super keyword in java?
• Explain about Dynamic Method Dispatch in java?
• What is Polymorphism? Explain it's types?
• What is an Abstract class in java?
• What is an interface in java?
• What is an inner class and explain about different inner classes in java?
• Explain about Static keyword and where can we use it?
• Explain about final keyword in java and it's uses?
• What is a package in java?
• What are access modifiers in java, explain them?
• What is are Exceptions in java and explain their types?
• How to handle exception in java?
• Explain about try and catch block in java?
• Difference throw and throws in java?
• What is Multi threading in java?
• Explain Thread Daemon, join and yield in java?
• What are wrapper classes?
• Difference between String, StringBuffer and StringBuilder in java?
• What are Lambda expressions in java?
• What are streams and explain about different streams in java?

• What is the difference between list and tuples in Python?
• What are the key features of Python?
• What type of language is python?
• What are different data types in Python?
• What is the differnce between set and dictionary in Python?
• Explain decorators in Python

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