Test Yantra Software Solutions React Native Developer Interview Questions and Answers

Q1. Explain clean architecture
Ans. 
Clean architecture is a software design approach that separates concerns and enforces a clear separation of responsibilities.
• Separates code into layers (presentation, domain, data)

• Dependence on abstractions rather than concrete implementations

• Allows for easier testing and maintenance

• Promotes scalability and flexibility

• Example: MVP, MVVM, VIPER
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Q2. Explain mvvm acrhitecture
Ans. 
MVVM is an architectural pattern that separates the UI, business logic, and data layers in an Android app.
• Model - represents the data and business logic

• View - UI components that display data and interact with the user

• ViewModel - acts as a mediator between the Model and View, handling data operations and updating the UI

• Data binding - connects the View and ViewModel, automatically updating the UI when data changes
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Q3. Explain SOLID principle
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SOLID is a set of five principles for writing clean, maintainable, and scalable object-oriented code.
• Single Responsibility Principle: A class should have only one reason to change.

• Open/Closed Principle: Classes should be open for extension but closed for modification.

• Liskov Substitution Principle: Objects of a superclass should be replaceable with objects of its subclasses without affecting the program's correctness.

• In...read more
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Q1. What are your strengths
Ans. 
My strengths include strong problem-solving skills, attention to detail, and a passion for learning new technologies.
• Strong problem-solving skills

• Attention to detail

• Passion for learning new technologies
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Q2. What are your weekness
Ans. 
My weakness is that I tend to be overly critical of my own work, which can sometimes lead to perfectionism.
• I have a tendency to spend too much time on a task to ensure it is perfect

• I struggle with delegating tasks to others because I want to make sure they are done correctly

• I can be overly self-critical, which can affect my confidence
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Q1. What are your strengths
Ans. 
My strengths include strong problem-solving skills, attention to detail, and a passion for learning new technologies.
• Strong problem-solving skills

• Attention to detail

• Passion for learning new technologies
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Q2. What are your weekness
Ans. 
My weakness is that I can be overly critical of my own work, which can sometimes lead to perfectionism.
• I tend to spend too much time on a task to ensure it is perfect

• I have difficulty delegating tasks to others

• I can be too self-critical and have high expectations for myself
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Q1. What About hooks
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Q2. Hooks, Functional Components,
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45 minutes logical reasoing coding mocqs

Not abale to sahre something yes do this wo this

Q1. JavaScript callback?
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Q2. What is useState?
Ans. 
useState is a hook in React that allows functional components to have state.
• useState is a built-in hook in React.

• It allows functional components to have state.

• It returns an array with two elements: the current state value and a function to update the state.

• The initial state can be passed as an argument to useState.

• The state can be of any data type, such as a string, number, boolean, or object.

• Example: const [count, set
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Q3. What is closure in JavaScript?
Ans. 
Closure is a feature in JavaScript that allows a function to access variables from its outer scope even after the function has finished executing.
• Closure is created when a function is defined inside another function.

• The inner function has access to the variables and parameters of the outer function.

• The inner function forms a closure with the outer function, preserving the state of the outer function's variables.

• Closure...read more
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Q4. JavaScript promise?
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Q5. What are props in react?
Ans. 
Props are read-only properties that are passed from a parent component to a child component in React.
• Props allow data to be passed between components in a unidirectional flow.

• Props are immutable and cannot be modified by the child component.

• Props can be used to customize the behavior or appearance of a component.

• Props are accessed using the 'this.props' syntax in class components or as function arguments in functional
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It was an online test. The test was having 25 English questions and 25 coding MCQ questions. Test duration was 60 Mins

Q1. The first part of the interview contained questions related to my work experience.
Ans. I told the interviewer about what I had done in my past roles.
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Q2. After this interviewer gave me a Machine coding round kind of question. I had to display a list of products using the flexbox layout. Also, I had to create a sort button to sort the list and update the vie...read more
Ans. I used useState hook to capture product details. and updated the list using the sort function.
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Q1. Asked basic questions on react hooks, life cycle frequently asked questions
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