AIS Technolabs Technical Architect Interview Questions and Answers

Q1. Explain virtual dom in React.
Ans. 
Virtual DOM is a lightweight copy of the actual DOM in React, used for efficient updates.
• Virtual DOM is a concept where a lightweight copy of the actual DOM is created in memory.

• When changes are made to the virtual DOM, React compares it with the actual DOM to identify the minimal number of updates needed.

• This process helps in optimizing performance by reducing the number of actual DOM manipulations.

• Example: When a use...read more
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Q2. How do you implement passwordless system
Ans. 
Implementing passwordless system involves using alternative authentication methods.
• Use email or SMS verification codes

• Implement biometric authentication

• Utilize hardware security keys

• Implement OAuth or OpenID Connect for single sign-on

• Leverage FIDO2 standards for passwordless authentication
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Q1. What to do for a cookieless system
Ans. 
To create a cookieless system, use alternative methods like local storage or URL parameters for tracking user data.
• Use local storage to store user data on the client side

• Utilize URL parameters to pass data between pages

• Implement server-side session management for user authentication

• Consider using JSON Web Tokens (JWT) for secure data transmission
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Q2. Explain in detail S.O.L.I.D principles
Ans. 
S.O.L.I.D principles are a set of five design principles in object-oriented programming to make software designs more understandable, flexible, and maintainable.
• Single Responsibility Principle (SRP) - A class should have only one reason to change.

• Open/Closed Principle (OCP) - Software entities should be open for extension but closed for modification.

• Liskov Substitution Principle (LSP) - Objects of a superclass should b...read more
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Technical test

Q1. Questions based on tecnology
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Q1. What are your salary expectations?
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Q2. Share details of your previous job.
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Q3. Why should we hire you?
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Q4. Why are you looking for a change?
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Q5. Tell me about yourself.
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Q1. Interview was with the Sr. Manager. Questions were mostly basic of Azure. There main focus was on Cosmos Db. They want to start a new project on Cosmos so were looking for that knowledge.
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Q2. What role and responsibilities you hadlre. Have you worked on Microservices?
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Q1. Programming language questions answers discussion
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Q1. Discussion with privious company details
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