Mad Street Den Backend Developer Interview Questions and Answers

Create crud operation using angular,nodejs,mysql

Q1. Coding question base on previous programing experience
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Q1. Final round asked about previous experience
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Q1. 1)what is async and await.
Ans. 
Async and await are keywords used in asynchronous programming in JavaScript.
• Async is used to define a function that returns a promise.

• Await is used to pause the execution of a function until a promise is resolved.

• Async/await makes asynchronous code look and behave like synchronous code.

• Example: async function getData() { const response = await fetch('https://example.com/data'); return response.json(); }
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Q1. 1)why nodejs is more popular
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Node.js is popular due to its event-driven, non-blocking I/O model and ability to handle large amounts of data.
• Node.js allows for faster and more efficient development due to its use of JavaScript on both the front-end and back-end.

• Node.js has a large and active community, with many open-source libraries and modules available.

• Node.js is scalable and can handle high traffic and large amounts of data, making it a popular...read more
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Because it is the one of best way fearness solution and understand the questions top speak 1st in bold.

Q1. Detail question of Python to explain?
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Q2. Detail explain of mysql?
Ans. 
MySQL is a popular open-source relational database management system.
• MySQL is used for storing and managing data in a structured format.

• It supports SQL for querying and manipulating data.

• MySQL is known for its speed, reliability, and ease of use.

• It can be integrated with various programming languages like PHP, Python, Java, etc.

• Examples of MySQL commands include SELECT, INSERT, UPDATE, DELETE.
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Q1. Asked about the previous job experience and area of interest like frontend or backend
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Coding test was on reactjs and html

Q1. Asked about all the react concepts in detail
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Q1. Javascript basics were asked
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Q1. Describe your current project
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Q2. Why do you want to change?
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Create a hero section for website

Online test with basic questions along with c++ question

Virtual group discussion

It was a simple case study with a regression problem

Q1. The interview was focused on basics of data analytics and python.
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Q2. What is the imp stw in data analytics?
Ans. 
The importance of data analytics lies in its ability to help organizations make informed decisions, identify trends, and improve overall performance.
• Data analytics helps organizations make data-driven decisions

• It allows businesses to identify trends and patterns in data

• Data analytics can improve operational efficiency and performance

• It enables organizations to gain insights and make predictions based on data

• Data analyt...read more
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Q3. What is rank and dense rank
Ans. 
Rank and dense rank are functions used in SQL to assign a rank to each row based on a specified column.
• Rank function assigns a unique rank to each distinct row based on the specified column.

• Dense rank function assigns a unique rank to each distinct row based on the specified column, but does not leave gaps between ranks.

• Example: If we have a table of students with their scores, using rank function will assign ranks lik...read more
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Q4. Advanced excel formulas were asked
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