Promatics Technologies Software Developer Interview Questions and Answers

Q1. What is promise?
Ans. 
A promise is an object representing the eventual completion or failure of an asynchronous operation.
• Promises are used in JavaScript to handle asynchronous operations.

• They can be in one of three states: pending, fulfilled, or rejected.

• Promises can be chained together using .then() method.

• Example: Fetching data from an API returns a promise that resolves with the data.

• Example: Promises help avoid callback hell by providi...read more
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Q2. What is scope and how it differentiate?
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Scope refers to the visibility and accessibility of variables in a program.
• Scope determines where in a program a variable can be accessed.

• Global scope refers to variables that can be accessed anywhere in the program.

• Local scope refers to variables that are only accessible within a specific block of code.

• Variables declared within a function have local scope.

• Scope can help prevent naming conflicts and improve code organi
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Q1. Logical question
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Q2. Basic opps and collection
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Q1. Resume related questions
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Q1. Technology related
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Q1. Discuss everything
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They will ask questions on logic

Q1. About technology you mentioned in resume
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Q2. And arrays or condition based
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Q3. String function
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Q1. About technology and previous company about work
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Q1. Salary discussion
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Q1. Reconcillation in react?
Ans. 
Reconciliation in React is the process of updating the virtual DOM to match the actual DOM.
• Reconciliation is the process of comparing the virtual DOM with the actual DOM and making necessary updates.

• React uses a diffing algorithm to efficiently update the DOM without re-rendering everything.

• Key prop is important for React to identify which items have changed, added, or removed during reconciliation.
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Q1. How you see yourself in next 5 years?
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Google meet in react they asked basics and node also must clear js

Q1. Linux commands,
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Q2. Cloud technologies different services (iaas, paas, saas)
Ans. 
Cloud technologies offer different services like IaaS, PaaS, and SaaS for varying levels of control and management.
• IaaS (Infrastructure as a Service) provides virtualized computing resources over the internet, such as virtual servers and storage.

• PaaS (Platform as a Service) offers a platform allowing customers to develop, run, and manage applications without dealing with infrastructure.

• SaaS (Software as a Service) deli...read more
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Q3. What do you know AWS
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