OMitra Full Stack Web Developer Interview Questions and Answers

Q1. What is your Role and responsibility in your current organization?
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Q2. What Kind of Production environments do you solve?
Ans. 
I solve complex production environments by identifying issues, optimizing performance, and implementing solutions.
• Identifying bottlenecks and optimizing performance

• Troubleshooting and resolving production issues

• Implementing scalable solutions for high traffic websites

• Working with cloud services like AWS or Azure

• Automating deployment processes with tools like Jenkins or Docker
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Q3. What Features you have worked on? Explain 1 feature?
Ans. 
Developed a real-time chat feature for a social networking platform.
• Implemented WebSocket technology for instant messaging

• Designed user interface for chat window with message history

• Integrated push notifications for new messages

• Developed backend logic for message encryption and decryption
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Q4. How did you prepare the design doc for this feature? What was your Approach?
Ans. 
I prepared the design doc by outlining the requirements, architecture, data flow, and user interactions.
• Outlined the requirements and goals of the feature

• Defined the architecture and technologies to be used

• Described the data flow and interactions between components

• Included wireframes or mockups for user interfaces

• Listed potential edge cases and how to handle them
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Q5. Find if Array2 is a substring of Array1
Ans. 
Check if Array2 is a substring of Array1
• Iterate through Array1 and check if each element contains Array2

• Use built-in string functions like includes() or indexOf() to check for substring

• Consider edge cases like empty arrays or arrays with empty strings
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Q6. How will you build breadcrums in react?
Ans. 
Breadcrumbs in React can be built using a combination of state management and conditional rendering.
• Create a state variable to store the breadcrumb data.

• Update the state variable as the user navigates through the application.

• Render the breadcrumbs component with the data stored in the state.
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Q7. How will you design a parking system? What api's will you create ? Their body and response object.
Ans. 
Design a parking system with APIs for managing parking spots and reservations.
• Create API for adding new parking spots with details like location, availability, and pricing

• Create API for listing available parking spots based on location and availability

• Create API for reserving a parking spot with user details and duration

• Create API for cancelling a parking reservation

• Response object for adding parking spot: { success: t...read more
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Was given a DSA problem on squares it was relatively easy.

Was giving another problem as regards longest sub array without repeating letters.

Q1. What is git grep
Ans. 
git grep is a command in Git that allows you to search through the contents of files in a Git repository.
• Allows searching through the contents of files in a Git repository

• Similar to the 'grep' command in Unix/Linux

• Can be used to search for specific strings or patterns in files

• Useful for finding references to functions, variables, or text within the codebase
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Q2. What is profilers
Ans. 
Profilers are tools used to analyze the performance of software applications by measuring various metrics such as CPU usage, memory usage, and execution time.
• Profilers help identify bottlenecks and optimize code for better performance.

• Examples of profilers include VisualVM, YourKit, and Xcode Instruments.

• Profiling can be done for different aspects of an application, such as CPU profiling, memory profiling, and network
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Q1. Machine oding asked to implement LLD
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Q2. What is a semaphore
Ans. 
A semaphore is a synchronization object used in concurrent programming to control access to shared resources.
• Semaphores can be used to limit the number of threads accessing a resource at the same time

• They can be implemented as counting semaphores or binary semaphores

• Example: In a producer-consumer problem, semaphores can be used to control access to a shared buffer
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It was easy just a few basic apti questions nothing complicated

4-5 codes on java/python or on ur preferred coding skill

Q1. Puzzle of 7 horses
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Q2. Not sure, look it up online
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Q3. 2d Matrix problems
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Q4. Coding questions on Array
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Q5. Coding Question on String
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Q1. Some code javascript outputs
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Q2. Some errors in javascript code
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Q 1 print string in tringal farmat
Q2 print duplicate string in two array

Q1. About core java over all
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