Birlasoft As400 Developer Interview Questions and Answers

Q1. What is closure?
Ans. 
Closure is a function that has access to its own scope, as well as the scope in which it was defined.
• Closure allows a function to access variables from its outer function even after the outer function has finished executing.

• It helps in maintaining state in asynchronous operations.

• Example: function outerFunction() { let outerVar = 'I am outer'; return function innerFunction() { console.log(outerVar); }; }
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Q2. Define hooks in react?
Ans. 
Hooks in React are functions that let you use state and other React features without writing a class.
• Hooks were introduced in React 16.8 to allow functional components to have state and lifecycle methods.

• useState() is a hook that allows you to add state to functional components.

• useEffect() is a hook that allows you to perform side effects in functional components.

• Custom hooks are reusable functions that can contain log...read more
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Q1. Write the code in eggplant
Ans. 
Writing code in eggplant for Senior Developer interview
• Use 'click' to simulate a mouse click on an element

• Use 'typeText' to enter text into a field

• Use 'verify' to check if an element is present on the screen
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Good test process keep trying you will get the job

Q1. Good question asked testing
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Q2. Good question asked teating
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Q1. Longest common substring in an array
Ans. 
Find the longest common substring in an array of strings.
• Iterate through each string in the array and compare with all other strings to find common substrings.

• Keep track of the longest common substring found so far.

• Return the longest common substring at the end.
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Q1. Explain Virtual DOM in React
Ans. 
Virtual DOM in React is a lightweight copy of the actual DOM, used for efficient updates and rendering.
• Virtual DOM is a concept where a lightweight copy of the actual DOM is created in memory.

• When changes are made to the UI, React compares the Virtual DOM with the actual DOM to identify the differences.

• React then updates only the necessary parts of the actual DOM, minimizing the number of DOM manipulations for better p...read more
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Q2. How to optimise a React application
Ans. 
Optimising a React application involves code splitting, lazy loading, using memoization, reducing unnecessary re-renders, and optimizing network requests.
• Implement code splitting to load only necessary code for each route or component.

• Use lazy loading to load components only when they are needed, reducing initial load time.

• Utilize memoization techniques like useMemo and useCallback to prevent unnecessary re-renders.

• Avo...read more
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Q1. CREATE A FUNCTION BASED ONLOGIC SHARED
Ans. 
Create a function based on shared logic
• Identify common logic that can be reused in multiple functions

• Create a separate function to encapsulate the shared logic

• Call the shared function from other functions where the logic is needed
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Q2. FOR AN ENTITY GIVE DTAILS OF PREVOUS AND NEXT DATE FOR PARTICULAR DEPATMENT
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Q1. CSS Box-model definition
Ans. 
CSS Box-model defines how elements are rendered in a webpage, including padding, border, and margin.
• Box-model consists of content, padding, border, and margin

• Content area is where text or images are displayed

• Padding is the space between content and border

• Border is the line around the content and padding

• Margin is the space outside the border
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Q2. Difference b/n flexbox and grid
Ans. 
Flexbox is for one-dimensional layouts, grid is for two-dimensional layouts.
• Flexbox is best for arranging items in a single row or column.

• Grid is best for creating complex layouts with rows and columns.

• Flexbox is more suitable for smaller scale layouts, while grid is better for larger scale layouts.

• Flexbox is more flexible in terms of item order and sizing, while grid provides more control over the overall layout.

• Both
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Q1. Technical discussion
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Q1. Manager round and technical discussion
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Q1. Selection processs
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Q1. Array qs reverse
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Q2. Question about angular and react
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