Blackcoffer Intern Interview Questions and Answers

Os, cloud computing, DBMS, networks, ai and ml mcq questions were asked

Q1. They need skills of googler at 4 lakhs
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Q2. 2 leetcode hard and 2 project Euler problems,did all still got rejected
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Question was based on string . Reverse the string and count numbers and special characters

Q1. Salary expectations
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Q2. General relocation
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Os, cloud computing, DBMS, networks, ai and ml mcq questions were asked

Q1. CLOSURE IN Javascript ?
Ans. 
Closure in JavaScript is a function that has access to its own scope, as well as the outer scope in which it was defined.
• A closure allows a function to access variables from its outer function even after the outer function has finished executing.

• Closures are commonly used in event handlers, callbacks, and in functional programming.

• Example: function outerFunction() { let outerVar = 'I am outer'; return function innerFun
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Q2. Class and ID difference
Ans. 
Class is used to style multiple elements, while ID is used to style a single element.
• Class can be used multiple times in a document, while ID should be unique

• Class is denoted by a period (.), ID is denoted by a hash (#)

• Class can be applied to multiple elements, ID can only be applied to one element
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Q1. System Design question
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Q2. Leetcode medium question on backtracking
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