Weaveroo Natural Language Processing Developer Interview Questions and Answers

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

• It allows React to efficiently update the UI by comparing the virtual DOM with the actual DOM and only making necessary changes.

• This helps in improving performance by reducing the number of direct manipulations to the actual DOM.

• For...read more
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Q2. Whats call, bind, apply?
Ans. 
call, bind, and apply are methods used to manipulate the context of a function in JavaScript.
• call - calls a function with a given 'this' value and arguments provided individually.

• bind - creates a new function that, when called, has its 'this' keyword set to the provided value.

• apply - calls a function with a given 'this' value and arguments provided as an array.
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Q1. Higher order function
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Q2. Component life cycle in react
Ans. 
Component life cycle in React refers to the series of methods that are invoked at different stages of a component's existence.
• Mounting: constructor, render, componentDidMount

• Updating: render, componentDidUpdate

• Unmounting: componentWillUnmount
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Q1. How do you maintain code quality
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Code quality is maintained through code reviews, automated testing, coding standards, and continuous integration.
• Regular code reviews by peers to catch errors and ensure best practices are followed

• Implementing automated testing to catch bugs early in the development process

• Enforcing coding standards and guidelines to maintain consistency and readability

• Utilizing continuous integration tools to automate the build and te
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Iam palli Rajeswari TQ for giving this opportunity

Q1. Technical interview
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Q2. General knowledge
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Q3. Where is located in Idukki power plant?
Ans. 
Idukki power plant is located in the Idukki district of Kerala, India.
• Located in the Idukki district of Kerala, India

• Situated near the Idukki Dam

• Produces hydroelectric power

• One of the largest hydroelectric projects in Kerala
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Q4. What full meaning of 4p in marketing skills
Ans. 
4P in marketing stands for Product, Price, Place, and Promotion.
• Product: Refers to the actual goods or services being offered to customers.

• Price: Represents the amount customers pay for the product or service.

• Place: Involves the distribution channels used to make the product available to customers.

• Promotion: Includes the marketing tactics used to communicate the benefits of the product and persuade customers to make a
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Q5. Which vitamin is used to blood observation
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Q1. A*b = 104, possible values of a and b.
Ans. 
The possible values of a and b that satisfy the equation a*b = 104.
• Possible values of a and b are (1, 104) and (104, 1).

• Factors of 104 are (1, 104), (2, 52), (4, 26), (8, 13).
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Q2. Hello world program in java.
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A simple program that prints 'Hello, World!' in Java.
• Create a class with a main method.

• Use System.out.println() to print 'Hello, World!'.
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Q1. Data analystics
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Q1. Difference between functional and class based component
Ans. 
Functional components are stateless and use functional programming concepts, while class components are stateful and use object-oriented programming concepts.
• Functional components are simpler and easier to read and test.

• Class components have access to lifecycle methods and state.

• Functional components are preferred for simple UI components, while class components are preferred for complex UI components.

• Functional compon...read more
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Q2. Have you ever worked on native components
Ans. 
Yes, I have worked on native components.
• I have experience in creating custom native modules for React Native apps.

• I have integrated native libraries like Firebase, Google Maps, and Camera into React Native apps.

• I have used native UI components like TextInput, ScrollView, and FlatList in React Native apps.

• I have also worked with native modules for iOS and Android separately.
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Q3. What are hooks and what are the hooks you have used
Ans. 
Hooks are functions that allow you to use state and other React features without writing a class.
• useState() - for managing state in functional components

• useEffect() - for performing side effects in functional components

• useContext() - for consuming context in functional components

• useReducer() - for managing complex state in functional components

• useCallback() - for memoizing functions in functional components
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Q1. Asked about projects and some questions based on it
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Q2. What is Hermes engine
Ans. 
Hermes is a JavaScript engine optimized for React Native apps.
• Developed by Facebook to improve app startup time and reduce memory usage.

• Uses ahead-of-time compilation to convert JavaScript code into bytecode.

• Supports ES6 syntax and is compatible with most React Native libraries.

• Can be enabled in React Native projects by adding a single line to the configuration file.
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Q3. Are you familiar with new architecture of React native
Ans. 
Yes, I am familiar with the new architecture of React Native.
• The new architecture of React Native is based on Fabric, a C++ UI framework.

• It separates the UI rendering from the JavaScript thread, resulting in improved performance.

• It also introduces new features like TurboModules and JSI for better native module integration.

• The new architecture is being gradually rolled out in React Native releases.

• It requires some chang...read more
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Q1. Difference between == and === in JavaScript
Ans. 
The difference between == and === is that == compares values after type coercion while === compares values and types.
• The double equals (==) operator compares values after type coercion.

• The triple equals (===) operator compares values and types.

• Type coercion is the process of converting one data type to another.

• Type coercion can lead to unexpected results.

• For example, 1 == '1' is true because the string '1' is coerced t...read more
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Q1. Somethinh about yourself. Banking questions area of expertise.
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Basics of maths and science