DssWorld PHP Developer Interview Questions and Answers

Q1. Why you like to join?
Ans. 
I am passionate about PHP development and excited about the opportunity to work with a talented team.
• Passionate about PHP development

• Excited about working with a talented team

• Looking for growth and learning opportunities
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Q2. Will you shift to client location
Ans. 
Yes, I am willing to shift to the client location if required for the job.
• I am open to relocating for the right opportunity

• I understand the importance of being on-site for certain projects

• I have previous experience working at client locations
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Q1. It was mainly java, interviewers are very good and supportive to elaborate more about problem.
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Q2. Scenario based on your earlier work experience
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Easy exam sample available on youtube

Q1. What are step functions.
Ans. 
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
Ans. 
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
Ans. 
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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It had mcq and 1 hard coding question

Q1. They asked me about backtracking and dp series problem and also to solve the given question
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Q2. Java and in depth about different pillars of java
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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. Javascript object manipulation based coding question
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Q2. React based verbal questions
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