Idea Usher Interview Questions and Answers

Q1. What is javascript
Ans. 
JavaScript is a high-level, interpreted programming language used for creating interactive websites and web applications.
• JavaScript is often used for client-side web development.

• It can also be used for server-side development with Node.js.

• JavaScript allows for dynamic content, interactivity, and animations on websites.

• Commonly used for form validation, interactive maps, and dynamic content loading.

• Example: document.get
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Q2. What is event loop
Ans. 
Event loop is a mechanism in programming that allows for asynchronous execution of code.
• Event loop is a part of the runtime environment that continuously checks the call stack and the callback queue.

• It allows for non-blocking I/O operations by handling asynchronous tasks efficiently.

• Example: In Node.js, the event loop is responsible for handling asynchronous operations like reading files or making network requests.
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Q3. Mongodb aggregration
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Q4. Indexing in mongodb
Ans. 
Indexing in MongoDB improves query performance by creating indexes on fields in a collection.
• Indexes can be created on single fields or compound fields.

• Indexes can be created in ascending or descending order.

• Indexes can improve query performance by allowing MongoDB to quickly locate documents.

• Examples: db.collection.createIndex({ field: 1 }), db.collection.createIndex({ field1: 1, field2: -1 })
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Q5. Async await and promises
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Q6. Real world problems
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Q1. Tell me something about yourself
Ans. 
I am a passionate writer with a strong background in creative writing and content creation.
• Graduated with a degree in English Literature

• Experience writing articles for a student publication

• Proficient in SEO and keyword research

• Completed a creative writing course online
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Q2. How would you go about researching for a topic?
Ans. 
I would start by identifying key sources, such as reputable websites, academic journals, and experts in the field.
• Identify key sources such as academic journals, reputable websites, and experts in the field

• Use search engines to find relevant information and articles

• Check for recent studies and publications to ensure the information is up-to-date

• Take notes and organize information to create a comprehensive understanding
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Database design, javascript, nodejs

Basic questions , relative speed and time calculation

Q1. Technical questions based on the previous experience.
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Object detection based assignment

Q1. Technical questions and Project related questions.
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