Promatics Technologies Software Developer Trainee Interview Questions and Answers

Q1. Hoisting and scope
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Q2. Map, reduce, filter
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Q3. Const, let and var difference
Ans. 
const, let, and var are used to declare variables in JavaScript with different scoping and mutability.
• const: declares a variable with a constant value that cannot be reassigned

• let: declares a block-scoped variable that can be reassigned

• var: declares a function-scoped variable that can be reassigned
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Create a small UI in 1 hour

Q1. Basic questions
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Q1. Basic Questions about your projects
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Q1. Salary discussion
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Q1. Basic question about the post like node.js developer then question will be related to node.js
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Q2. Some question from your project which you have mentions in your cv or resume.
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Q1. Basic Question about security.
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Q2. Some baisc of array questions or string
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Q1. They arrange with under experienced interviewer any one can pass through it
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Q1. HR round will honey bath one you as you treat as a king
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Basic aptitude and technical questions

Q1. Python questions basic
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Q2. Project basic questions
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Q1. Node JS details
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Q2. Javascript curring
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Q1. Implement tail f
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Implement tail -f command

Q1. Kafka partitions
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Q2. Elasticsearch queries
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Q1. Why Browserstack?
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Browserstack is a popular cloud-based cross-browser testing tool used by developers worldwide.
• Provides access to a wide range of browsers and devices for testing

• Allows for parallel testing to save time and increase efficiency

• Integrates with popular testing frameworks like Selenium and Appium

• Offers features like screenshots, video recordings, and debugging tools

• Used by companies like Microsoft, Twitter, and Airbnb for t
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Q2. Any challenge you faced at current company?
Ans. 
Yes, I faced a challenge in integrating a new third-party API with our existing system.
• Had to understand the documentation of the API thoroughly

• Encountered compatibility issues with our system

• Worked closely with the API provider to troubleshoot and resolve issues
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