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West agile labs Interview Questions and Answers
Ques:- Why immutability in important in React?
Right Answer:
Immutability in React is important because it helps to optimize performance by allowing React to quickly determine when to re-render components. When data is immutable, React can easily compare previous and current states, leading to efficient updates and minimizing unnecessary renders.
Comments
Admin Feb 3, 2020

There are generally two approaches to changing data. The first approach is to mutate the data by directly changing the data’s values. The second approach is to replace the data with a new copy which has the desired changes.

Ques:- What are the types of React component?
Right Answer:
There are two main types of React components:

1. Class components
2. Functional components
Comments
Admin Feb 3, 2020

React components can be categorized into two types :

Function component
Class component

Ques:- What is a stateful component?
Right Answer:
A stateful component is a React component that manages its own state, allowing it to store and update data that can change over time, affecting how the component renders.
Comments
Admin Feb 3, 2020

‘stateful’ components are class components. They have one ‘state’ that is used for UI re-rendering.

Ques:- What is JSX?
Right Answer:
JSX is a syntax extension for JavaScript that allows you to write HTML-like code within JavaScript. It is used in React to describe the UI structure and makes it easier to create and visualize the component's layout.
Comments
Admin Feb 3, 2020

JSX or JavaScript XML is used in React to include XML/HTML code in JavaScript code. Later, transpilers like babel can transform these code into proper javaScript code. We can use React without JSX but JSX makes it more elegant.

Ques:- What are React props?
Right Answer:
React props are short for "properties" and are used to pass data from a parent component to a child component in React. They allow components to be dynamic and reusable by providing them with different values.
Comments
Admin Feb 3, 2020

props are used to pass data to a component. They can hold single or multiple sets of values to pass to a component. They are mainly used to pass data to a component and to trigger any state changes.

Ques:- What are the different components of the ARM toolchain
Right Answer:
The different components of the ARM toolchain are:

1. **Compiler** (e.g., ARM GCC)
2. **Assembler** (e.g., ARM Assembler)
3. **Linker** (e.g., ARM Linker)
4. **Debugger** (e.g., ARM Debugger)
5. **Libraries** (e.g., ARM Standard Libraries)
6. **Build Tools** (e.g., Make, CMake)
Ques:- What is a Software Component (SWC) in AUTOSAR
Right Answer:
A Software Component (SWC) in AUTOSAR is a modular unit of software that encapsulates specific functionality and can communicate with other components through defined interfaces. It promotes reusability and separation of concerns in automotive software development.
Ques:- How does Ab Initio handle parallelism and what are its types
Right Answer:
Ab Initio handles parallelism through two main types:

1. **Data Parallelism**: This involves splitting data into smaller chunks that can be processed simultaneously across multiple nodes or processes. Each node works on a different subset of the data.

2. **Component Parallelism**: This allows multiple instances of a component to run in parallel, enabling different operations or transformations to occur at the same time within the same graph.

Both types enhance performance and efficiency in data processing.
Ques:- What is semihosting in ARM and how is it used
Right Answer:
Semihosting in ARM is a mechanism that allows a program running on an ARM processor to communicate with a host computer for input/output operations, such as reading from or writing to files, without needing to implement these functions in the embedded system. It is typically used during debugging to facilitate interaction between the target device and the development environment.
Ques:- What is an RPort and PPort in AUTOSAR
Right Answer:
In AUTOSAR, an RPort (Receiver Port) is used for receiving data from other components, while a PPort (Provider Port) is used for providing data to other components.
Ques:- Differences between webforms and MVC
Right Answer:
1. **Architecture**: WebForms uses a page-based event-driven model, while MVC follows a Model-View-Controller pattern.
2. **State Management**: WebForms maintains state through ViewState, whereas MVC is stateless and relies on HTTP requests.
3. **URL Routing**: MVC uses clean URLs with routing, while WebForms typically uses file-based URLs.
4. **Testability**: MVC is more testable due to its separation of concerns, while WebForms can be harder to unit test.
5. **Control Over HTML**: MVC provides more control over the generated HTML, while WebForms abstracts it away with server controls.
Ques:- What is the difference between var let and const in JavaScript
Right Answer:
`var` is function-scoped or globally-scoped and can be re-declared and updated. `let` is block-scoped, can be updated but not re-declared in the same scope. `const` is also block-scoped, cannot be updated or re-declared, and must be initialized at the time of declaration.
Ques:- What is AJAX and how does it work
Right Answer:
AJAX (Asynchronous JavaScript and XML) is a web development technique that allows web pages to communicate with a server and update content asynchronously without reloading the entire page. It works by using JavaScript to send requests to the server, which can return data (often in JSON or XML format) that the browser can then use to update the webpage dynamically.
Ques:- What are some popular frontend frameworks and libraries
Right Answer:
Some popular frontend frameworks and libraries are:

1. React
2. Angular
3. Vue.js
4. Svelte
5. Bootstrap
6. jQuery
7. Ember.js
8. Backbone.js
Ques:- What is the box model in CSS
Right Answer:
The box model in CSS describes the rectangular boxes generated for elements in a document tree and consists of four areas: content, padding, border, and margin. The content is the innermost area, surrounded by padding, then the border, and finally the margin, which is the outermost area.
Ques:- What is the difference between synchronous and asynchronous code
Right Answer:
Synchronous code executes sequentially, meaning each operation must complete before the next one starts. Asynchronous code allows operations to run independently, enabling other tasks to proceed without waiting for the previous ones to finish.
West Agile Labs is a global digital product agency headquartered in San Francisco, California. Founded in 2012 by Parasnis Shashank and Akash Agarwal, West Agile Labs provides end-to-end digital product development services to startups, Fortune 500 companies, and enterprises worldwide. The company specializes in helping businesses innovate and transform their ideas into successful digital products through a combination of strategy, design, engineering, and product management expertise. They offer a wide range of services, including product strategy, UX/UI design, web and mobile app development, quality assurance, DevOps, and more. West Agile Labs takes a customer-centric approach to product development, working closely with clients to understand their goals, challenges, and target audience. They emphasize agile methodologies, rapid prototyping, and iterative development to deliver high-quality products that meet user needs and market demands. With a team of over 250 talented professionals spread across offices in the United States, India, and Singapore, West Agile Labs has successfully completed projects for clients in various industries, including healthcare, finance, e-commerce, education, and technology. The company's commitment to innovation, quality, and client satisfaction has earned them recognition as one of the top digital product agencies globally. They have received several awards and accolades for their work, including being listed on the Inc. 5000 list of fastest-growing companies in America.
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