Infosys SAP Fiori Ui5 Developer Interview Questions and Answers

Q1. Ui development and component related
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Q2. Performance of technology and challenges
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Q1. Personal introduction and location details
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Q2. Negatition of salries excepectations
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Q1. Given UI task display like display boxes side by side in desktop screen and one after the other in mobile screen using media queries?
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Q2. Explain difference between authorization vs authentication?
Ans. 
Authentication verifies a user's identity, while authorization determines what a user can access.
• Authentication confirms a user's identity through credentials like username and password.

• Authorization controls access to resources based on the authenticated user's permissions.

• Example: Logging into a website (authentication) and then being able to view/edit specific pages based on your role (authorization).
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Q3. How to render list in react? Also explain difference between state vs prop in react?
Ans. 
To render a list in React, use map() function to iterate over an array of data and return a list of components. State is mutable data managed within a component, while props are immutable data passed from parent to child components.
• To render a list in React, use map() function to iterate over an array of data and return a list of components.

• Example: const items = ['item1', 'item2', 'item3']; items.map(item =>

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Q1. What are the webpage optimization techniques? How to check webpage optimization? In lighthouse optimization reports , how to fix issue related render blocking scripts?
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Webpage optimization techniques include minifying CSS and JS files, optimizing images, using asynchronous loading for scripts, and reducing render-blocking scripts.
• Minify CSS and JS files to reduce file sizes and improve loading times.

• Optimize images by compressing them and using the correct file format (e.g. JPEG for photographs, PNG for graphics).

• Use asynchronous loading for scripts to prevent them from blocking the ...read more
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Q2. Write scss code nested li element by applying background color 2 element and also use mixins?
Ans. 
Use SCSS to apply background color to nested li elements and utilize mixins.
• Use nesting to target the li elements within a parent element

• Apply background color to the 2nd li element using the :nth-child() selector

• Define and use mixins to reuse styles across the codebase
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Q3. How to fix cumulative layout shift issues?
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To fix cumulative layout shift issues, ensure all images and media have dimensions specified in HTML, use CSS aspect ratio boxes, and prioritize loading critical resources.
• Specify dimensions for all images and media in HTML to prevent layout shifts.

• Use CSS aspect ratio boxes to reserve space for images before they load.

• Prioritize loading critical resources to avoid sudden layout changes.
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Q1. JAVAscript related,es6 api calls
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Q2. UI related css html questitions
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Javscript oop related coding

This is coding + mcq question

Q1. What is react class based conponent?
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Q2. What is mixins?
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Q3. What are react lifecycles?
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Q1. WHat is event loop?
Ans. 
Event loop is a mechanism in JavaScript that allows for asynchronous operations to be executed in a non-blocking way.
• Event loop is responsible for handling asynchronous operations in JavaScript.

• It allows for non-blocking execution of code by continuously checking the call stack and the task queue.

• When the call stack is empty, the event loop moves tasks from the task queue to the call stack for execution.

• Example: setTim...read more
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Q2. What is DOM ?
Ans. 
DOM stands for Document Object Model, a programming interface for web documents.
• DOM is a tree-like structure that represents the elements of a web page.

• It allows developers to manipulate the content, structure, and style of a web page using scripting languages like JavaScript.

• DOM provides methods and properties to interact with HTML elements, such as selecting, adding, removing, or modifying them.

• Example: document.getE...read more
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Q1. API call and thunk
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Q1. State and Props
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Q1. Explain difference between inline and inline block
Ans. 
Inline elements do not start on a new line and only take up as much width as necessary, while inline-block elements can have a width and height specified.
• Inline elements do not start on a new line

• Inline elements only take up as much width as necessary

• Inline-block elements can have a width and height specified

• Inline-block elements can have margins and paddings applied

• Inline-block elements can have line breaks within the
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Q2. Described semantic html

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Semantic HTML is the use of HTML elements that carry meaning and convey the structure of the content.

• Semantic HTML helps improve accessibility and SEO.

• It provides a clear and meaningful structure to the content.

• Examples of semantic HTML elements include

  ,

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