DXC Technology Sfdc Developer Interview Questions and Answers

Q1. Discussion about my previous project
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Q2. Question on html, css, javascript & react
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Q3. Explain about promises
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Promises are objects representing the eventual completion or failure of an asynchronous operation.
• Promises are used to handle asynchronous operations in JavaScript.

• They can be in one of three states: pending, fulfilled, or rejected.

• Promises can be chained using .then() to handle success and .catch() to handle errors.

• Example: const myPromise = new Promise((resolve, reject) => { ... });
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Q4. Use state, context api
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Q5. Box modelling in css, css pre processors
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Box model in CSS refers to the way elements are rendered in a web page. CSS preprocessors like SASS or LESS help streamline CSS development.
• Box model in CSS includes content, padding, border, and margin.

• CSS preprocessors like SASS or LESS allow for variables, nesting, and mixins to be used in CSS.

• Example: box-sizing: border-box; in CSS changes the box model to include padding and border in the element's total width and
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Q1. Angular routing
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Q2. What are pipes in angular
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Pipes in Angular are used for transforming data in templates.
• Pipes are used to format data before displaying it in the view

• They can be used to filter, sort, or transform data in various ways

• Examples include date pipe, currency pipe, and uppercase/lowercase pipe
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Q1. Which version of java you use?
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I use Java version 8 for Angular development.
• I use Java 8 for its compatibility with Angular frameworks and libraries.

• Java 8 introduced features like lambda expressions and streams which are useful in Angular development.

• Example: I use Java 8 to write backend services for my Angular applications.
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Q2. What are the new features in java 8?
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Java 8 introduced several new features including lambda expressions, functional interfaces, streams, and default methods.
• Lambda expressions allow you to write code in a more concise and readable way.

• Functional interfaces provide a way to define interfaces with a single abstract method.

• Streams allow you to process collections of objects in a functional style.

• Default methods allow you to add new methods to interfaces wit
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Q1. Reverse an array using Java 8
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Using Java 8, reverse an array of strings
• Use Arrays.stream() to convert the array to a stream

• Use Collections.reverse() to reverse the stream

• Use Collectors.toList() to convert the stream back to a list
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Q1. Code a controller class , service class, entity and repository
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Code a controller, service, entity, and repository classes for a software application.
• Create a controller class to handle incoming requests and interact with the service layer.

• Develop a service class to implement business logic and interact with the repository.

• Define an entity class to represent data in the application.

• Implement a repository class to handle database operations for the entity.
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Q2. Basic questions about steams
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Q1. Mostly js questions, not so many of angular or react.
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Q2. Like fizbuzz or things like that.
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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. Basic html css questions
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Logical reasoning, quantitative analysis and computer test

Q1. Basic html, css, javascript questions
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Q1. Salary discussion
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Q1. Sliding Window find the subarray with sum equal to k
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Using sliding window technique to find subarray with sum equal to k.
• Initialize two pointers at the start of the array.

• Move the right pointer to expand the window until the sum is greater than or equal to k.

• Move the left pointer to shrink the window if the sum exceeds k.

• Repeat until the end of the array is reached.

• Example: Input array [1, 4, 20, 3, 10, 5], k=33. Output: [20, 3, 10].
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Q1. What are step functions.
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Step functions are a type of serverless function that allow you to create workflows by chaining multiple functions together.
• Step functions are used to coordinate multiple AWS services into serverless workflows.

• They allow you to define a series of steps in a workflow, with each step being a separate function.

• You can use step functions to handle complex business logic, long-running processes, and error handling.

• Step func...read more
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Q2. How to scale lambdas
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Scaling lambdas involves optimizing memory usage, increasing concurrency, and managing dependencies.
• Optimize memory usage by reducing unnecessary variables and objects

• Increase concurrency by using asynchronous programming and parallel processing

• Manage dependencies by breaking down functions into smaller, more modular components

• Consider using AWS Lambda Provisioned Concurrency for consistent performance
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Q1. How did you handled a difficult collegelue
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I addressed the issue directly and professionally, seeking to understand their perspective and find common ground.
• Approached the colleague privately to discuss the issue

• Listened actively to their concerns and perspective

• Sought to find common ground and reach a resolution

• Maintained professionalism and respect throughout the conversation
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